CN220972789U - Precast beam field steel bar binding rack - Google Patents

Abstract

The utility model relates to a prefabricated beam field steel bar binding rack which comprises a seat body, a bottom frame structure, a fixing structure and two groups of side frame structures; each group of side frame structure comprises side frames and a plurality of side support pieces, the side frames of the two groups are arranged on the base body and are respectively positioned at two ends of the base body in the width direction, and the side support pieces of each group are arranged on the corresponding side frames at intervals along the vertical direction; the chassis structure comprises a chassis and a plurality of bottom supporting seats, wherein the chassis is arranged on the base body and positioned between two groups of side frames and extends along the length direction of the base body, the plurality of bottom supporting seats are arranged on the chassis and are arranged at intervals along the extending direction of the chassis, and each bottom supporting seat can move along the extending direction of the chassis; the fixed structure is arranged between the underframe and the plurality of bottom supporting seats. The distance between the transverse steel bars at the bottom can be adjusted by the aid of the scheme, namely the density of the steel bars at the bottom can be adjusted, the stability of steel bar positioning is guaranteed, and flexibility is improved.

Description

Precast beam field steel bar binding rack

Technical Field

The utility model relates to the technical field of precast beam production equipment, in particular to a precast beam field steel bar binding rack.

Background

The box girder consists of a bottom plate, a web plate, a top plate and a flange plate. The box girder may be classified into a steel box girder and a reinforced concrete box girder according to materials. When the top plate of the existing reinforced concrete box girder is prefabricated, firstly, a reinforcement framework is formed by binding reinforcement, and then pouring is carried out on the reinforcement framework to form a prefabricated box girder top plate. When the worker binds the reinforcement cage, the reinforcement is positioned and arranged firstly, and in actual operation, the reinforcement interval is not uniform easily because of inaccurate positioning and arrangement of the reinforcement. Thus, the rebar is typically positioned by the rebar tying rack.

For example, patent CN 207521619U discloses a mould frame for hollow slab reinforcement binding, which effectively fixes and binds the framework from both sides and bottom by arranging a locating frame and a base and corresponding locating devices, so that the distance between reinforcement cages is more uniform. However, because the slotting position of the locating slot on the base is fixed, the distance between two adjacent locating slots is not adjustable, so that the density of the bottom reinforcing steel bar cannot be changed, and the flexibility is lacking.

Disclosure of utility model

In view of the above, it is necessary to provide a prefabricated beam field reinforcement bar binding rack for solving the technical problems that in the prior art, the slotting position of the positioning slot on the base is fixed, so that the distance between two adjacent positioning slots is not adjustable, the density of the bottom reinforcement bar cannot be changed, and the flexibility is lacking.

The utility model provides a precast beam field steel bar binding rack, which comprises:

A base;

Two groups of side frame structures, each group of side frame structures comprises a side frame and a plurality of side support pieces, the side frames of the two groups are arranged on the base body and are respectively positioned at two ends in the width direction of the base body, and the side support pieces of each group are arranged on the corresponding side frames at intervals along the vertical direction and used for fixing side steel bars;

the chassis structure comprises a chassis and a plurality of bottom supporting seats, wherein the chassis is arranged on the base body and positioned between two groups of side frames and extends along the length direction of the base body, the plurality of bottom supporting seats are arranged on the chassis and are arranged at intervals along the extending direction of the chassis, and each bottom supporting seat is used for fixing a bottom reinforcing steel bar and can move along the extending direction of the chassis so that the distance between two adjacent bottom supporting seats is adjustable; and

And the fixing structure is arranged between the underframe and the plurality of bottom supporting seats, so that each bottom supporting seat can be fixed at any position in the extending direction of the underframe.

Optionally, the chassis is provided with a fixing groove along a vertical direction, and the fixing groove is arranged in an extending manner along an extending direction of the chassis;

Each bottom supporting seat is provided with a connecting hole along the vertical direction, and the connecting holes correspond to the fixing grooves;

The fixing structure comprises a plurality of groups of fixing screw connectors, the fixing screw connectors correspond to the bottom support seats one by one, each group of fixing screw connectors comprise fixing bolts and fixing nuts, the fixing bolts penetrate through the corresponding connecting holes and the corresponding fixing grooves, the fixing nuts are screwed on one ends, far away from the bottom support seats, of the fixing bolts, and accordingly the bottom support seats can be fixed at any position on the extending direction of the underframe.

Optionally, each bottom support seat is provided with a plurality of connection holes, the plurality of connection holes are arranged at intervals along the extending direction of the underframe, and the corresponding fixing bolts and the corresponding fixing nuts of each group are provided with a plurality of fixing bolts and fixing nuts.

Optionally, the chassis is provided with support plates protruding at two ends in the width direction of the base, each support plate extends along the extending direction of the chassis, and one end of the support plate away from the chassis is connected to the base, where the fixing bolt is located between the two support plates.

Optionally, the underframe structure is provided with two groups, and the underframe of two groups is arranged at intervals along the width direction of the seat body.

Optionally, at least one of the underframes is movable along the width direction of the seat body, so that the distance between the two underframes can be adjusted;

The precast beam field reinforcement rack further comprises an adjusting structure, wherein the adjusting structure is arranged between the base body and the movable underframe and used for driving the underframe to move along the width direction of the base body.

Optionally, two ends of the base body in the length direction thereof are provided with guide channels, the guide channels extend along the width direction of the base body, two ends of each chassis in the extending direction thereof respectively extend into the corresponding guide channels, and are respectively provided with an adjusting screw hole, the adjusting screw holes extend along the width direction of the base body, and the screw thread directions of the adjusting screw holes at the same end are opposite;

The adjusting structure comprises two adjusting screws, threads at two ends of each adjusting screw are opposite in rotation direction, and the corresponding guide channels penetrate through the two adjusting screw holes at the same side to drive the two underframes to be close to or far away from each other when rotating.

Optionally, the chassis includes a main body frame and two adjusting frames, the main body frame extends along the length direction of the base, the two adjusting frames are arranged at two ends of the main body frame in the length direction, and each adjusting frame is detachably connected with the main body frame;

the bottom support seat is arranged on the main body frame, the adjusting frame part extends into the guide channel and moves along the width direction of the seat body, and the adjusting screw hole is arranged on the adjusting frame.

Optionally, the side frames are provided with a plurality of mounting portions at intervals along a vertical direction, and each side support member can be mounted on any one of the mounting portions, so that a distance between two adjacent side support members can be adjusted.

Optionally, the side frames in the same group include a plurality of mounting frames, the plurality of mounting frames are arranged at intervals along the length direction of the seat body, each mounting frame is provided with a plurality of mounting holes at intervals along the vertical direction so as to form the mounting part, and each mounting hole extends along the width direction of the seat body;

The side frames in the same group comprise a plurality of mounting frames, the plurality of mounting frames are arranged at intervals along the length direction of the seat body, a plurality of mounting holes are arranged at intervals along the vertical direction of each mounting frame so as to form the mounting part, and each mounting hole extends along the width direction of the seat body;

each side support piece of same group includes a plurality of side support arms, and a plurality of side support arms are along the length direction interval of pedestal is located each mounting bracket, and each side support arm can wear to locate same arbitrary mounting hole on the mounting bracket for same the distance between two adjacent side support arms on the mounting bracket is adjustable.

Compared with the prior art, in the precast beam field steel bar binding rack provided by the utility model, a plurality of side supporting pieces are arranged at intervals along the vertical direction and are used for fixing longitudinal steel bars positioned at the side parts; the plurality of bottom supporting seats are arranged at intervals along the length direction of the seat body, and each bottom supporting seat is used for fixing transverse steel bars positioned at the bottom; the distance between two adjacent bottom supporting seats can be adjusted as each bottom supporting seat can move along the length direction of the seat body, and the distance between the two adjacent bottom supporting seats can be fixed through the fixing structure after the distance between the two adjacent bottom supporting seats is adjusted to a preset value; therefore, the distance between the bottom transverse steel bars can be adjusted, namely the density of the bottom steel bars can be adjusted, the stability of steel bar positioning is ensured, and the flexibility is improved.

The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and its details set forth in the accompanying drawings. Specific embodiments of the present utility model are given in detail by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a schematic structural view of an embodiment of a precast beam field reinforcement bar binding bench provided by the present utility model;

FIG. 2 is a schematic top view of the precast beam field reinforcement tie rack of FIG. 1;

FIG. 3 is a cross-sectional view of the chassis structure of FIG. 2;

FIG. 4 is a cross-sectional view of the chassis of FIG. 3;

FIG. 5 is a schematic perspective view of the chassis of FIG. 2;

FIG. 6 is an enlarged schematic view of FIG. 5A;

FIG. 7 is a schematic view of the bottom support of FIG. 2;

FIG. 8 is a schematic view of the structure of the base in FIG. 1;

FIG. 9 is a partial schematic view of the side frame structure of FIG. 1;

FIG. 10 is a schematic view of the mounting bracket of FIG. 9;

fig. 11 is a schematic view of the side support arm of fig. 9.

Reference numerals illustrate:

100. Prefabricating a beam field steel bar binding rack; 1. a base; 1a, a guide channel; 2. a side frame structure; 21. a side frame; 211. a mounting part; 212. a mounting frame; 212a, mounting holes; 22. a side support; 221. a side support arm; 222. a sub-support arm; 223. a connecting plate; 224. a limit nut; 225. a handle; 3. a chassis structure; 31. a chassis; 31a, a fixing groove; 31b, adjusting screw holes; 311. a support plate; 312. a main body frame; 313. an adjusting frame; 32. a bottom support base; 32a, connection holes; 32b, a support groove; 4. a fixed structure; 41. a fixing bolt; 42. a fixing nut; 5. adjusting the structure; 51. and adjusting the screw.

Detailed Description

The following detailed description of preferred embodiments of the utility model is made in connection with the accompanying drawings, which form a part hereof, and together with the description of the embodiments of the utility model, are used to explain the principles of the utility model and are not intended to limit the scope of the utility model.

Referring to fig. 1 to 11, the present precast beam field reinforcement bar binding bench 100 includes a base 1, a chassis structure 3, a fixing structure 4, and two sets of side frame structures 2; each group of side frame structures 2 comprises side frames 21 and a plurality of side support pieces 22, wherein the side frames 21 of two groups are arranged on the base body 1 and are respectively positioned at two ends of the base body 1 in the width direction, and the side support pieces 22 of each group are arranged on the corresponding side frames 21 at intervals along the vertical direction and are used for fixing side reinforcing bars; the underframe structure 3 comprises an underframe 31 and a plurality of bottom supporting seats 32, the underframe 31 is arranged on the base body 1 and is positioned between two groups of side frames 21 and extends along the length direction of the base body 1, the plurality of bottom supporting seats 32 are arranged on the underframe 31 and are arranged at intervals along the extending direction of the underframe 31, each bottom supporting seat 32 is used for fixing a bottom reinforcing steel bar, and the bottom supporting seats can move along the extending direction of the underframe 31, so that the distance between two adjacent bottom supporting seats 32 is adjustable; the fixing structure 4 is disposed between the chassis 31 and the plurality of bottom supporting seats 32, so that each bottom supporting seat 32 can be fixed at any position in the extending direction of the chassis 31.

In the precast beam field reinforcement bar binding bench 100 provided by the utility model, a plurality of side supporting pieces 22 are arranged at intervals along the vertical direction and are used for fixing longitudinal reinforcement bars positioned at the side parts; the plurality of bottom supporting seats 32 are arranged at intervals along the length direction of the seat body 1, and each bottom supporting seat 32 is used for fixing a transverse reinforcing steel bar positioned at the bottom; the bottom support seats 32 can move along the length direction of the seat body 1, so that the distance between two adjacent bottom support seats 32 is adjusted, and the distance between two adjacent bottom support seats 32 is adjusted to a preset value and then can be fixed through the fixing structure 4; therefore, the distance between the bottom transverse steel bars can be adjusted, namely the density of the bottom steel bars can be adjusted, the stability of steel bar positioning is ensured, and the flexibility is improved. In the example of the drawing, the longitudinal direction, the width direction, and the vertical direction of the housing 1 are shown as F1, F2, and F3, respectively.

Further, the chassis 31 is provided with a fixing groove 31a along a vertical direction, and the fixing groove 31a is extended along an extending direction of the chassis 31; each bottom support seat 32 is provided with a connecting hole 32a along the vertical direction, and the connecting holes 32a correspond to the fixing grooves 31a; the fixing structure 4 comprises a plurality of groups of fixing screw connectors, the plurality of groups of fixing screw connectors are in one-to-one correspondence with the plurality of bottom support seats 32, each group of fixing screw connectors comprises a fixing bolt 41 and a fixing nut 42, the fixing bolts 41 penetrate through corresponding connecting holes 32a and fixing grooves 31a, and the fixing nuts 42 are screwed on one ends, far away from the bottom support seats 32, of the fixing bolts 41, so that each bottom support seat 32 can be fixed at any position in the extending direction of the bottom frame 31. In this embodiment, the fixing bolt 41 is inserted into the connecting hole 32a and the fixing groove 31a, and the fixing nut 42 is screwed to the fixing bolt 41 at the end far away from the bottom supporting seat 32, so that the position of the bottom supporting seat 32 is adjusted, the bottom supporting seat 32 is limited to move, the stability of positioning the bottom reinforcing steel bar is ensured, and the structure is simple and reliable.

Further, each bottom support 32 is provided with a plurality of connection holes 32a, the plurality of connection holes 32a are arranged at intervals along the extending direction of the bottom frame 31, and a plurality of fixing bolts 41 and fixing nuts 42 are correspondingly arranged in each group. In this embodiment, the same bottom support 32 is provided with a plurality of connecting holes 32a, and is correspondingly and matingly arranged on the fixing bolt 41 and the fixing nut 42, so as to further avoid the bottom support 32 from moving after being adjusted, and improve the stability.

Further, the chassis 31 is provided with support plates 311 protruding at both ends in the width direction of the base body 1, each support plate 311 extends in the extending direction of the chassis 31, and one end of the support plate 311 away from the chassis 31 is connected to the base body 1, wherein the fixing bolt 41 is located between the two support plates 311. In this embodiment, the underframe 31 is supported by two support plates 311, so that the fixing nut 42 is convenient to loosen or tighten when the operator needs to adjust the bottom support 32, thereby improving convenience.

Further, the underframe structure 3 is provided with two groups, and the underframes 31 of the two groups are arranged at intervals along the width direction of the seat body 1. In this embodiment, two chassis structures 3 are provided to stably support the bottom reinforcement. Specifically, in this scheme, the upper end of each bottom support seat 32 is concavely equipped with supporting groove 32b, and supporting groove 32b is used for pressing from both sides the reinforcing bar, simple structure, the cost-effective.

Further, at least one of the bottom frames 31 is movable in the width direction of the base 1, so that the distance between the two bottom frames 31 is adjustable; the precast beam field reinforcement bar binding bench 100 further comprises an adjusting structure 5, wherein the adjusting structure 5 is arranged between the seat body 1 and the movable underframe 31 and is used for driving the underframe 31 to move along the width direction of the seat body 1. In this embodiment, the distance between the two bottom frames 31 can be adjusted, so that the device can be applied to transverse steel bars with different bottom lengths, and the universality is improved.

Further, the base 1 is provided with guide channels 1a at two ends in the length direction thereof, the guide channels 1a extend along the width direction of the base 1, two ends of each chassis 31 in the extending direction thereof extend into the corresponding guide channels 1a respectively, and are provided with adjusting screw holes 31b respectively, the adjusting screw holes 31b extend along the width direction of the base 1, and the screw directions of the adjusting screw holes 31b at the same end are opposite; the adjusting structure 5 comprises two adjusting screws 51, the threads at two ends of the adjusting screws 51 are opposite in rotation direction, and the two adjusting screw holes 31b at the same side are penetrated from the corresponding guide channels 1a so as to drive the two underframes 31 to approach or separate from each other when rotating. In this embodiment, the adjusting screw 51 drives the two chassis 31 to approach and separate from each other, so as to adjust the distance between the two chassis 31.

Further, the chassis 31 includes a main body frame 312 and two adjusting frames 313, the main body frame 312 extends along the length direction of the seat body 1, the two adjusting frames 313 are disposed at two ends of the main body frame 312 along the length direction, and each adjusting frame 313 is detachably connected with the main body frame 312; the bottom support 32 is disposed on the main body frame 312, and the adjusting frame 313 partially extends into the guide channel 1a and moves along the width direction of the base 1, and the adjusting screw hole 31b is disposed on the adjusting frame 313. In this way, when the distance between the two bottom frames 31 needs to be adjusted, the main body frame 312 is detached from the adjusting frame 313, then the two adjusting frames 313 at the same end are driven to approach or separate from each other by the adjusting screw 51, and after the distance between the two adjusting frames 313 is adjusted, the main body frame 312 is mounted on the adjusting frames 313. In this way, the chassis 31 is prevented from being excessively heavy and not easily adjusted. Specifically, the main body frame 312 and the adjusting frame 313 are detachably connected by a screw.

Further, the side frames 21 are provided with a plurality of mounting portions 211 at intervals in the vertical direction, and each side support 22 can be mounted to any one of the mounting portions 211 such that the distance between two adjacent side supports 22 is adjustable. In this embodiment, the distance between two adjacent side supporting pieces 22 can also be adjusted, so that the distance between the side longitudinal bars can be adjusted, and the flexibility is further improved.

Further, the side frames 21 of the same group include a plurality of mounting frames 212, the plurality of mounting frames 212 are arranged at intervals along the length direction of the base 1, each mounting frame 212 is provided with a plurality of mounting holes 212a at intervals along the vertical direction to form a mounting portion 211, and each mounting hole 212a extends along the width direction of the base 1; each side support 22 of the same group includes a plurality of side support arms 221, the plurality of side support arms 221 are disposed on each mounting frame 212 at intervals along the length direction of the base 1, and each side support arm 221 can be disposed through any mounting hole 212a on the same mounting frame 212, so that the distance between two adjacent side support arms 221 on the same mounting frame 212 is adjustable. In this embodiment, the side support arms 221 are inserted into any mounting hole 212a, so as to adjust the distance between two side support arms 221 on the same mounting rack 212, and further adjust the distance between the longitudinal side reinforcement bars, with simple and reliable structure.

It should be noted that, in an embodiment, the mounting hole 212a is a shaped hole, and the side supporting arm 221 is disposed corresponding to the shape of the mounting hole 212a to prevent the side supporting arm 221 from rotating. Specifically, in the present embodiment, the upper mounting holes 212a of each mounting rack 212 are arranged at intervals along the length direction of the base 1, and correspondingly, each side supporting arm 221 includes a plurality of sub supporting arms 222, the plurality of sub supporting arms 222 are arranged at intervals along the vertical direction and/or the length direction of the base 1, and one end of each sub supporting arm 222 of the same side supporting arm 221, which is far away from the bottom frame 31, is connected by a connecting plate 223, so that the mounting is convenient and the convenience is improved. The connecting plate 223 is provided with a handle 225 at one end far away from the sub-supporting arms 222, so that the corresponding sub-supporting arms 222 can be conveniently pulled away from the mounting holes 212a, and the bound reinforcement rack can be conveniently lifted.

In addition, in order to prevent the lateral longitudinal bar from moving on the lateral support arm 221 along the width direction of the seat body 1, the lateral support arm 221 is tapped with threads, and two limit nuts 224 are correspondingly screwed, so that the lateral longitudinal bar is placed between the two limit nuts 224, thereby preventing the lateral longitudinal bar from moving, and improving the stability. In addition, graduation marks may be provided on the side support arms 221 to facilitate a lashing person in determining whether the longitudinal reinforcement is offset.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model.

Claims (10)

1. The utility model provides a precast beam field reinforcement rack which characterized in that, it includes:

A base;

Two groups of side frame structures, each group of side frame structures comprises a side frame and a plurality of side support pieces, the side frames of the two groups are arranged on the base body and are respectively positioned at two ends in the width direction of the base body, and the side support pieces of each group are arranged on the corresponding side frames at intervals along the vertical direction and used for fixing side steel bars;

the chassis structure comprises a chassis and a plurality of bottom supporting seats, wherein the chassis is arranged on the base body and positioned between two groups of side frames and extends along the length direction of the base body, the plurality of bottom supporting seats are arranged on the chassis and are arranged at intervals along the extending direction of the chassis, and each bottom supporting seat is used for fixing a bottom reinforcing steel bar and can move along the extending direction of the chassis so that the distance between two adjacent bottom supporting seats is adjustable; and

And the fixing structure is arranged between the underframe and the plurality of bottom supporting seats, so that each bottom supporting seat can be fixed at any position in the extending direction of the underframe.

2. The precast beam field reinforcement binding bench according to claim 1, wherein the chassis is penetrated with a fixing groove along a vertical direction, and the fixing groove is extended along an extension direction of the chassis;

Each bottom supporting seat is provided with a connecting hole along the vertical direction, and the connecting holes correspond to the fixing grooves;

The fixing structure comprises a plurality of groups of fixing screw connectors, the fixing screw connectors correspond to the bottom support seats one by one, each group of fixing screw connectors comprise fixing bolts and fixing nuts, the fixing bolts penetrate through the corresponding connecting holes and the corresponding fixing grooves, the fixing nuts are screwed on one ends, far away from the bottom support seats, of the fixing bolts, and accordingly the bottom support seats can be fixed at any position on the extending direction of the underframe.

3. The precast beam field reinforcement binding bench according to claim 2, wherein each of the bottom supporting seats is provided with a plurality of the connection holes, the plurality of connection holes are arranged at intervals along the extending direction of the bottom frame, and the corresponding fixing bolts and the corresponding fixing nuts of each group are provided in plurality.

4. The precast beam field reinforcement binding bench according to claim 2, wherein the chassis is convexly provided with support plates at both ends in the width direction of the base, each support plate extends along the extending direction of the chassis, and one end of the support plate away from the chassis is connected to the base, wherein the fixing bolt is located between the two support plates.

5. The precast beam field reinforcement binding bench according to claim 1, wherein the underframe structure is provided with two groups, and the underframes of the two groups are arranged at intervals along the width direction of the seat body.

6. The precast beam yard reinforcement tie bar stand of claim 5, wherein at least one of said underframes is movable in a width direction of said base so that a distance between two of said underframes is adjustable;

The precast beam field reinforcement rack further comprises an adjusting structure, wherein the adjusting structure is arranged between the base body and the movable underframe and used for driving the underframe to move along the width direction of the base body.

7. The precast beam field reinforcement binding bench according to claim 6, wherein the base body is provided with guide channels at both ends in the length direction thereof, the guide channels extend in the width direction of the base body, both ends of each of the underframes in the extending direction thereof extend into the corresponding guide channels respectively, and are provided with adjusting screw holes respectively, the adjusting screw holes extend in the width direction of the base body, and the screw directions of the adjusting screw holes at the same end are opposite;

The adjusting structure comprises two adjusting screws, threads at two ends of each adjusting screw are opposite in rotation direction, and the corresponding guide channels penetrate through the two adjusting screw holes at the same side to drive the two underframes to be close to or far away from each other when rotating.

8. The precast beam field reinforcement binding bench according to claim 7, wherein the chassis comprises a main body frame and two adjusting frames, the main body frame extends along the length direction of the base body, the two adjusting frames are arranged at two ends of the main body frame in the length direction, and each adjusting frame is detachably connected with the main body frame;

the bottom support seat is arranged on the main body frame, the adjusting frame part extends into the guide channel and moves along the width direction of the seat body, and the adjusting screw hole is arranged on the adjusting frame.

9. The precast beam field reinforcement binding bench according to claim 1, wherein the side frames are provided with a plurality of mounting portions at intervals in a vertical direction, and each of the side supporting members can be mounted to any one of the mounting portions such that a distance between two adjacent side supporting members is adjustable.

10. The precast beam field reinforcement binding bench according to claim 9, wherein the side frames of the same group comprise a plurality of mounting frames, the plurality of mounting frames are arranged at intervals along the length direction of the base body, each mounting frame is provided with a plurality of mounting holes at intervals along the vertical direction so as to form the mounting portion, and each mounting hole extends along the width direction of the base body;

each side support piece of same group includes a plurality of side support arms, and a plurality of side support arms are along the length direction interval of pedestal is located each mounting bracket, and each side support arm can wear to locate same arbitrary mounting hole on the mounting bracket for same the distance between two adjacent side support arms on the mounting bracket is adjustable.