CN102995696B - Counterweight bolt protector - Google Patents

Abstract

The invention discloses a counterweight bolt protection device, which is used to protect the counterweight bolts of construction machinery equipment, comprising a bolt protection sleeve, the bolt protection sleeve surrounds the head of the counterweight bolt, and is connected with the construction machinery equipment The platform is fixedly connected. In the present invention, by providing a fixedly connected bolt protection sleeve on the platform, the counterweight bolts of construction machinery equipment are "surrounded" by the bolt protection sleeve, thereby avoiding accidental collision of the counterweight bolts, thereby effectively preventing Safety problems caused by looseness.

Description

Counterweight Bolt Protector

technical field

The invention relates to the field of construction machinery, in particular to a counterweight bolt protection device for construction machinery equipment.

Background technique

The counterweight is one of the important parts of the excavator, which plays an important role in the stability of the machine when it is working. The common connection method of the counterweight of the excavator is: a U-shaped groove is built in the bottom of the counterweight, through the groove, the counterweight rides on the platform longitudinal beam, the thread is in the counterweight, the bolt passes through the installation longitudinal beam from bottom to top, and then screwed in ,fixed. Due to the harsh working conditions of the excavator, it is often subject to accidental collisions, and the phenomenon of loosening of the counterweight bolts is likely to occur frequently, posing a relatively large safety hazard.

Contents of the invention

In view of this, the present invention proposes a counterweight bolt protection device to prevent the counterweight bolts from being accidentally collided, thereby effectively preventing safety problems caused by loosening of the bolts.

The invention discloses a protection device, which is used to protect the counterweight bolts of construction machinery equipment, comprising a bolt protection sleeve, the bolt protection surrounds the head of the counterweight bolts, and is fixedly connected with the platform of the construction machinery equipment; An anti-falling assembly, the falling-off assembly is connected between the bolt protective sleeve and the head of the weight bolt; wherein, the anti-falling assembly includes a bolt cover, and the bolt cover is connected to the head of the weight bolt Card access.

Further, in the above-mentioned counterweight bolt protection device, the bolt cover is provided with a brake unit matched with the head of the counterweight bolt.

Further, in the above counterweight bolt protection device, the braking unit is an inner square structure arranged inside the bolt cover.

Further, in the above-mentioned counterweight bolt protection device, the brake unit is a brake screw arranged in the bolt cover.

Further, in the above-mentioned counterweight bolt protection device, the anti-falling assembly further includes a pressure plate; the pressure plate is clamped between the bolt protection sleeve and the bolt cover, and the pressure plate is connected to the bolt cover through connecting bolts. The above-mentioned bolt protection sleeve is fixedly connected.

Further, in the above-mentioned counterweight bolt protection device, the body of the pressure plate is a hollow cylinder, and the bottom surface of the hollow cylinder is also provided with a turning edge along the circumferential direction; Lock the pressing plate and the bolt protection sleeve at the edge.

Further, in the above counterweight bolt protection device, the outer surface of the bolt cover is a wedge surface; the inner surface of the hollow cylinder is a wedge surface; the outer surface of the bolt cover and the hollow cylinder Fitted inside.

Further, in the above counterweight bolt protection device, the outer surface of the bolt cover is a stepped surface; the inner surface of the hollow cylinder is a stepped surface; the outer surface of the bolt cover and the inner surface of the hollow cylinder Card access.

In the present invention, by providing a fixedly connected bolt protection sleeve on the platform, the counterweight bolts of construction machinery equipment are "surrounded" by the bolt protection sleeve, thereby avoiding accidental collision of the counterweight bolts, thereby effectively preventing Safety problems caused by looseness.

Description of drawings

The drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 is in the excavator, the schematic diagram of the location installation of counterweight;

Fig. 2 is a structural schematic diagram of an embodiment of the counterweight bolt protection device of the present invention when the counterweight is installed based on the method of Fig. 1 .

Explanation of reference signs

1 counterweight bolt

2 bolt protectors

3 platen

31 hollow cylinder

32 folded edge

4 bolt cover

5 connecting bolts

6 platforms

7 counterweight

Detailed ways

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

The preferred embodiment of the present invention will be described in detail below with reference to FIG. 1 and FIG. 2 .

Referring to FIG. 1 , FIG. 1 is a schematic diagram of the positioning and installation of the counterweight 7 in the excavator. The counterweight 7 is installed at the tail of the platform 6, and the counterweight 7 is fixed on the rotary platform 6 by the counterweight bolt 1. The installation direction of the counterweight bolt 1 is to be installed from bottom to top, the platform 6 is designed with a bolt installation through hole, and the interior of the counterweight 7 is designed with a threaded hole.

FIG. 2 shows a schematic structural view of an embodiment of the counterweight bolt protection device when the counterweight 7 is installed in the manner shown in FIG. 1 .

The counterweight bolt protection device in this embodiment includes a bolt protective sleeve 2 that surrounds the head of the counterweight bolt 1 and is fixedly connected with the platform 6 of the excavator. In this embodiment, the connection can be fixed by welding.

It can be seen from Fig. 2 that in this embodiment, by providing a fixedly connected bolt protection sleeve on the platform, the counterweight bolts of the construction machinery equipment are “surrounded” by the bolt protection sleeve, avoiding accidental collision of the counterweight bolts , thus effectively preventing safety problems caused by loose bolts.

In order to overcome the problem that the counterweight bolts are easy to loosen, this embodiment also adds an anti-falling assembly, which is connected between the bolt protective sleeve 2 and the head of the counterweight bolt 1 . The anti-falling assembly may include a bolt cover 4 , which is clamped on the head of the counterweight bolt 1 ; and the bolt cover 4 is provided with a brake unit matched with the head of the counterweight bolt 1 .

The brake unit can be realized in various forms, for example, the brake unit is an inner square structure arranged inside the bolt cover 4 . Alternatively, the brake unit is a brake screw arranged in the bolt cover 4 .

In order to securely connect the bolt protection sleeve 2 and the bolt cover 4 well, a pressure plate 3 may also be arranged in the fall-off prevention assembly. The pressure plate 3 is clamped between the bolt protection sleeve 2 and the bolt cover 4 , and the pressure plate 3 is fixedly connected to the bolt protection sleeve through connecting bolts 5 .

The specific structure of the pressing plate 3 is: the body of the pressing plate 3 is a hollow cylinder 31, and the bottom surface of the hollow cylinder 31 is also provided with a turning edge 32 along the circumferential direction; The bolt protection sleeve 2 is locked.

In order to make the pressure plate 3 and the bolt cover 4 transmit pressure better, the bolt cover 4 and the hollow cylinder 31 can be designed into the following two feasible structures:

The outer surface of the bolt cover 4 is a wedge surface; the inner surface of the hollow cylinder 31 is a wedge surface; the outer surface of the bolt cover 4 is attached to the inner surface of the hollow cylinder 31; or

The outer surface of the bolt cover 4 is a stepped surface; the inner surface of the hollow cylinder 31 is a stepped surface; the outer surface of the bolt cover 4 and the inner surface of the hollow cylinder 31 are clamped.

To sum up, in this embodiment: the main platform of the excavator is provided with a bolt protection sleeve, and the bolt protection sleeve is connected with the excavator platform by means such as welding, thereby preventing the counterweight bolts from being damaged by collision or the like. Moreover, the present embodiment is also provided with a bolt cover that cooperates with the bolt head and prevents the counterweight bolt from loosening, and the bolt cover cooperates with the bolt head through the braking structure thereon. At the same time, the pressure plate is installed on the above-mentioned bolt protective sleeve through bolt connection, and the pressure plate presses the bolt cover through the wedge surface or the step surface to effectively transmit the pressure and prevent the weight bolt from loosening. The bolt protection sleeve and the pressure plate form a closed space to effectively protect the counterweight bolts. This embodiment has simple structure, convenient installation and reliable connection.

It should be noted that the counterweight bolt protection device in this embodiment is used for excavators, in fact, the counterweight bolt protection device can also be used for other construction machines. The present invention is not limited here.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (8)

1. A counterweight bolt protection device, used to protect the counterweight bolt (1) of construction machinery equipment, characterized in that, the counterweight bolt protection device comprises: The bolt protective sleeve (2) surrounds the head of the counterweight bolt (1) and is fixedly connected with the platform (6) of the construction machinery equipment; The anti-falling assembly is connected between the bolt protective sleeve (2) and the head of the counterweight bolt (1); wherein, the anti-falling assembly includes a bolt cover (4), and the bolt cover (4) It is engaged with the head of the counterweight bolt (1). 2. The counterweight bolt protection device according to claim 1, characterized in that, The bolt cover (4) is provided with a brake unit matched with the head of the weight bolt (1). 3. The counterweight bolt protection device according to claim 2, characterized in that, The braking unit is an inner square structure arranged in the bolt cover (4). 4. The counterweight bolt protection device according to claim 2, characterized in that, The brake unit is a brake screw arranged in the bolt cover (4). 5. The counterweight bolt protection device according to claim 3 or 4, wherein the anti-falling assembly further comprises: Press plate (3); The pressure plate (3) is clamped between the bolt protection sleeve (2) and the bolt cover (4), and the pressure plate (3) and the bolt protection sleeve (2) are connected by connecting bolts (5). ) fixed connection. 6. The counterweight bolt protection device according to claim 5, characterized in that, The body of the pressing plate (3) is a hollow cylinder (31), and the bottom surface of the hollow cylinder (31) is also provided with a turning edge (32) along the circumferential direction; The connecting bolts (5) abut against the folded edge (32) to lock the pressing plate (3) and the bolt protective sleeve (2). 7. The counterweight bolt protection device according to claim 6, characterized in that, The outer surface of the bolt cover (4) is a wedge surface; The inner surface of the hollow cylinder (31) is a wedge surface; The outer surface of the bolt cover (4) is attached to the inner surface of the hollow cylinder (31). 8. The counterweight bolt protection device according to claim 6, characterized in that, The outer surface of the bolt cover (4) is a stepped surface; The inner surface of the hollow cylinder (31) is a stepped surface; The outer surface of the bolt cover (4) is engaged with the inner surface of the hollow cylinder (31).