CN203678956U - Pipe bender - Google Patents

Abstract

The utility model provides a pipe bender contains hydraulic means and location holder. The hydraulic device is provided with a liquid storage cylinder and a shell which are communicated with each other; a first push rod and a second push rod which are mutually sleeved are arranged in the shell. The pressing plate arranged on the positioning clamping seat is connected with the end part of the second push rod. When the pipe bender is used, the first push rod and the second push rod are pushed by liquid filled in the liquid storage barrel and further move along the shell simultaneously, so that the first push rod extends outwards to drive the pressing plate to generate a first displacement section. The liquid continuously pushes the second push rod to extend outwards to drive the pressing plate to generate a second displacement section. By means of the above, the first push rod and the second push rod extend outwards or retract inwards in two sections according to the housing, so as to generate a multi-section telescopic function; make the utility model discloses the whole volume of hickey can be reduced by a wide margin, reaches the effect that does not account for the space, portable and accomodate.

Description

pipe bender

technical field

The utility model relates to a pipe bender, in particular to a tool suitable for processing metal pipes, which has a telescopic function to reduce volume and does not occupy space.

Background technique

Existing pipe benders are generally used for piping equipment (such as the delivery pipes of various large and small machines, air-conditioning refrigerant pipes, etc.) or for bending related metal pipelines. The existing hydraulic pipe bender has a longer existing push rod, and the function of the existing push rod is to generate a longer extension distance so that the metal pipe can be bent to an appropriate arc; but in order to accommodate the existing For the push rod, the existing pipe bender must have an existing shell relative to the length of the existing push rod, so that the overall volume of the existing pipe bender is relatively large. Therefore, the existing pipe bender takes up a lot of space and is inconvenient to carry.

Contents of the invention

The purpose of the utility model is to allow the pipe bender to have a telescopic function, so as to reduce the volume, achieve the effect of not occupying space, and be easy to carry and store.

For realizing above-mentioned object, the technical scheme that the utility model adopts is:

A pipe bender, characterized in that it comprises:

The hydraulic device has a liquid storage cylinder, a housing, a fixing ring, a first push rod and a second push rod that are socketed in each other, the liquid storage cylinder and the fixing ring are respectively connected to two sides of the housing, and the housing has a first displacement space , the fixed ring has a second displacement space connected to the first displacement space, and the first push rod is arranged in the first displacement space and the second displacement space, and the first push rod has a third displacement space, so that the second push rod is set In the third displacement space of the first push rod, an embedding groove is provided at the end of the second push rod exposed to the third displacement space;

The positioning clip seat has a seat body, a pressure plate and a horizontal rod. The two sides of the seat body have socket ends and groove seats respectively, so that the socket ends of the seat body are connected to the fixed ring, and the pressure plate is embedded in the embedding groove of the second push rod , and the horizontal bar is connected to the groove seat of the seat body;

The first push rod and the second push rod of the hydraulic device move and displace in the first displacement space and the second displacement space to drive the pressure plate of the positioning clamp seat to generate the first displacement section; the second push rod is in the third position of the first push rod. The displacement in the displacement space can drive the pressure plate of the positioning clip seat to generate the second displacement segment.

In the pipe bender described above, the outer periphery of the first push rod of the hydraulic device is sheathed with a first elastic member, and the outer periphery of the second push rod is sheathed with a second elastic member.

In the pipe bender described above, the housing of the hydraulic device is connected with a hand lever and a pressure relief valve.

In this way, the utility model has the advantage that the housing of the hydraulic device is provided with a first push rod and a second push rod nested in each other, so that the first push rod and the second push rod extend outward along the housing segments Or shrink inward, and then produce two-stage stretching, and the first push rod and the second push rod retracted inward can greatly reduce the overall length, and then effectively shorten the length of the hydraulic device, so the bending of the utility model can be made The tube effectively reduces the volume and achieves the effect of not occupying space.

Description of drawings

Fig. 1 is a perspective view of the utility model;

Fig. 2 is a three-dimensional exploded view of a partial component of the utility model;

Fig. 3 is a three-dimensional exploded view of partial components of the hydraulic device of the present invention;

Fig. 4 is a partial sectional view of the utility model hydraulic device;

Fig. 5 is a schematic diagram of the outward extension of the first push rod and the second push rod of the utility model;

Fig. 6 is a schematic diagram of the second push rod of the utility model extending outward;

Fig. 7 is a schematic diagram of the utility model in operation.

Description of reference signs: 10-pipe bender; 1-hydraulic device; 11-liquid storage cylinder; 12-housing; 121-first displacement space; 13-fixing ring; 131-second displacement space; 14-hand pressure Rod; 15-pressure relief valve; 16-first push rod; 161-body; 162-first elastic member; 163-third displacement space; 17-second push rod; 171-body; 172-second elastic member ; 173-Embedding groove; 2-Positioning clamp seat; 21-Seat body; 211-Socket end; 212-Slot seat; 241-inner concave arc surface; 25-locking piece; 3-metal tube; 4-washer.

Detailed ways

Please refer to Fig. 1 to Fig. 4, it can be clearly seen from the figures that the pipe bender 10 of the present invention includes a hydraulic device 1 and a positioning clamp seat 2, wherein:

The hydraulic device 1 has a liquid storage cylinder 11 , a housing 12 , a fixing ring 13 , a hand lever 14 , a pressure relief valve 15 , a first push rod 16 and a second push rod 17 that are socketed with each other. The liquid storage cylinder 11 and the fixing ring 13 are respectively connected to two sides of the casing 12 and communicate with each other; the casing 12 has a first displacement space 121 inside; the fixing ring 13 has a second displacement space 131 connected to the first displacement space 121 . The hand lever 14 and the pressure relief valve 15 are arranged on the casing 12 .

The first push rod 16 of the aforementioned hydraulic device 1 has a body 161 and a first elastic member 162 . The first elastic member 162 is sleeved on the outer periphery of the body 161 of the first push rod 16; the body 161 of the first push rod 16 is provided with a third displacement space 163; The displacement space 121 and the second displacement space 131 of the fixing ring 13 , and a gasket 4 is disposed between the main body 161 and the casing 12 . The second push rod 17 of the aforementioned hydraulic device 1 has a body 171 and a second elastic member 172 . The second elastic member 172 is sleeved on the outer periphery of the body 171 of the second push rod 17 . The second push rod 17 is disposed in the third displacement space 163 of the first push rod 16 , and the washer 4 is disposed between the second push rod 17 and the first push rod 16 . The end of the second push rod 17 exposed to the third displacement space 163 of the first push rod 16 is cut with an embedding groove 173 .

The positioning clamp seat 2 has a seat body 21 , a pressing plate 22 , a horizontal bar 23 and two fixing pieces 24 . Two sides of the seat body 21 respectively have a socket end 211 and a groove seat 212 , so that the socket end 211 of the seat body 21 is connected to the fixing ring 13 . The pressing plate 22 is embedded in the embedding groove 173 of the second push rod 17 , and a concave arc surface 221 is formed on the side. The horizontal rod 23 is locked to the groove seat 212 of the seat body 21 by the locking member 25 ; two fixing members 24 are arranged on two sides of the horizontal rod 23 , and the same side of each fixing member 24 has a concave arc surface 241 .

Please refer to FIG. 5 and FIG. 7 , which are schematic diagrams of the first displacement section generated by the pressing plate 22 . During operation, pull the hand pressure lever 14 of the hydraulic device 1, so that the liquid filled in the liquid storage cylinder 11 pushes the first push rod 16 and the second push rod 17 in the first displacement space 121 of the housing 12 and between the fixed ring 13. The second displacement space 131 is moved and displaced together, and then the first push rod 16 is pushed outward along the housing 12 to expose the housing 12 , and drives the pressing plate 22 of the positioning clip 2 to generate a first displacement section. Moreover, the first elastic member 162 sheathed on the outside of the first push rod 16 is pressed by the first push rod 16 and the fixing ring 13 to generate compressive elastic force.

Please refer to FIG. 6 and FIG. 7 , which are schematic diagrams of the second displacement section produced by the pressing plate 22 . The liquid filled in the liquid storage cylinder 11 continuously pushes the second push rod 17 to move outward along the third displacement space 163 of the first push rod 16 to expose the first push rod 16 and drive the pressure plate of the positioning holder 2 22 Generate a second displacement segment. Moreover, the second elastic member 172 sheathed outside the second push rod 17 is pressed by the first push rod 16 and the second push rod 17 to generate compressive elastic force.

Referring back to Figures 4 to 7, the metal tube 3 is pre-placed between the two concave arc surfaces 241 of the positioning holder 2 and the concave arc surface 221 of the pressure plate 22; combined with the outward extension of the first push rod 16, the metal tube 3 is formed. The first displacement section and the second displacement section formed by the outward extension of the second push rod 17 drive the pressure plate 22 to move towards the metal pipe 3 in two stages, and the pressure plate 22 protrudes into the space between the two fixing parts 24, A force is generated on the metal pipe 3 to form a bent pipe-shaped metal pipe 3 finished product.

Rotate the pressure relief valve 15, so that the elastic reset force produced by the compression elastic force of the first elastic member 162 and the second elastic member 172 will act on the first push rod 16 and the second push rod 17 respectively, so that the second push rod 17, retract the first push rod 16, the first push rod 16 retracts into the housing 12, and drive the pressure plate 22 to return to the position to be processed; repeat the aforementioned operation, and pull the hand pressure rod 14 of the hydraulic device 1. The processing of the next metal pipe 3 is carried out.

In this way, the key technology of the present utility model is that a first push rod 16 and a second push rod 17 which are nested in each other are provided in the housing 12 of the hydraulic device 1, so that the first push rod 16 and the second push rod 17 move along the The casing 12 is pushed outwards or retracted in sections to produce two-stage expansion and contraction, and the first push rod 16 and the second push rod 17 retracted inward can greatly reduce the overall length, thereby effectively shortening the hydraulic device. 1, so that the pipe bender 10 of the present utility model can be effectively reduced in size, so as to achieve the effect of not occupying space.

Claims (3)

1. a pipe bender, is characterized in that, comprises:

Hydraulic means, there is the first push rod and second push rod of a liquid storage cylinder, housing, retainer ring, socket mutually, liquid storage cylinder and retainer ring are connected to housing two sides, in housing, there is the first displacement space, in retainer ring, there is the second displacement space that is communicated with the first displacement space, and the first push rod is located at the first displacement space and the second displacement space, in the first push rod, there is triple motion space, make the second push rod be located at the triple motion space of the first push rod, and the end that the second push rod exposes triple motion space is provided with embedding slot;

Location holder, has pedestal, pressing plate and horizon bar, and pedestal two sides have respectively socket end and groove seat, make the socket end of pedestal be connected to retainer ring, and pressing plate is embedded at the embedding slot of the second push rod, and horizon bar is connected in the groove seat of pedestal;

The first push rod of hydraulic means and the second push rod can drive the pressing plate of location holder to produce the first displaced segments at the first displacement space and the second displacement space with moving displacement; The second push rod can drive the pressing plate of location holder to produce the second displaced segments at the triple motion space displacement of the first push rod.

2. pipe bender according to claim 1, is characterized in that: the first push rod outer peripheral edges of this hydraulic means are arranged with the first elastic component, and these the second push rod outer peripheral edges are arranged with the second elastic component.

3. pipe bender according to claim 1, is characterized in that: the housing of this hydraulic means is connected with hand bar and relief valve.

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