CN217296999U - Trolley limiting device of crane - Google Patents

Abstract

The utility model discloses a dolly stop device of hoist, including T type seat, the mounting panel, a piston section of thick bamboo, the piston rod, the brake block, rubber buffer block, the first end at T type seat is installed with the bolt on the upper portion of mounting panel, the lower part of mounting panel is equipped with the piston hole, piston cylinder cover is in the piston hole, piston rod cover is in a piston section of thick bamboo, the head end rigid coupling of a piston section of thick bamboo has the buffer block mount pad, rubber buffer block's afterbody is installed in the buffer block mount pad, accompany first compression spring between buffer block mount pad and the mounting panel, accompany second compression spring between buffer block mount pad and the piston rod, the tail end rigid coupling of piston rod has the brake block mount pad, the afterbody of brake block is installed in the brake block mount pad. When the trolley of the utility model is close to the end of the guide rail, the rubber buffer block is contacted with the frame or the beam of the crane, thereby playing a role of buffering; when the rubber buffer block is pushed towards the mounting plate, the brake block can be contacted with the wheels of the trolley, and the wheels of the trolley are braked.

Description

A trolley limit device for a crane

technical field

The utility model relates to the technical field of trolley limiting, in particular to a trolley limiting device of a crane.

Background technique

The trolley of the crane is an important lifting component that slides on the guide rail of the crane. At present, by installing proximity switches at both ends of the guide rail, when the trolley is close to the proximity switch, the power that drives the trolley to work will stop working, but the trolley will still slide forward due to inertia. , the trolley will collide with the crane frame or beam at the end of the guide rail, resulting in collision noise, collision deformation, and even derailment of the trolley. Therefore, a buffer mechanism and a braking mechanism for stopping the rotation of the wheels of the trolley are required to protect the trolley.

Utility model content

The purpose of the utility model is to overcome the above problems existing in the prior art, and to provide a trolley limiting device for a crane.

In order to realize the above-mentioned technical purpose and achieve the above-mentioned technical effect, the present invention realizes through the following technical solutions:

A trolley limiting device for a crane, comprising a T-shaped seat, a mounting plate, a piston cylinder, a piston rod, a brake block, and a rubber buffer block, the upper part of the mounting plate is mounted on the first end of the T-shaped seat with bolts, and the The lower part of the mounting plate is provided with a circular piston hole, the piston cylinder is sleeved in the piston hole, the piston rod is sleeved in the piston cylinder, the head end of the piston cylinder is fixed with a buffer block mounting seat, and the rubber buffer The tail of the block is installed in the buffer block mounting seat, the first compression spring is sandwiched between the buffer block mounting seat and the mounting plate, the second compression spring is sandwiched between the buffer block mounting seat and the piston rod, and the piston The rear end of the rod is fixed with a brake block mounting seat, and the rear end of the brake block is mounted in the brake block mounting seat.

Wherein, a limit ring is installed at the tail of the piston cylinder.

Wherein, the side wall of the piston cylinder is provided with guide grooves symmetrically distributed relative to the central axis of the piston cylinder, and two first guide blocks symmetrical to the central axis of the piston hole are installed on the hole wall of the piston hole, so The outer side of the head of the piston rod is installed with two second guide blocks that are symmetrical with respect to the central axis of the piston rod. between the first guide block and the buffer block mounting seat.

Wherein, the elastic coefficient of the first compression spring is smaller than the elastic coefficient of the second compression spring.

Wherein, the upper part of the mounting plate is provided with two U-shaped holes symmetrical with respect to the long axis of the mounting plate, and the support plate of the T-shaped seat is provided with two screw holes symmetrical with respect to the long axis of the support plate , the bolts are screwed into the corresponding screw holes through the U-shaped holes.

Wherein, the head of the rubber buffer block is in the shape of a truncated cone, and a truncated cavity is arranged in the head of the rubber buffer block.

The beneficial effect of the utility model is as follows: the mounting plate, the piston cylinder, the first compression spring, the buffer block mounting seat and the rubber buffer block are used to cooperate together. When the trolley approaches the end of the guide rail, the rubber buffer block contacts the frame or beam of the crane and lifts the To the buffering effect; the piston cylinder, the piston rod, the second compression spring, the buffer block mounting seat and the brake block cooperate together. When the rubber buffer block is pushed towards the mounting plate, the brake block will contact the wheel of the trolley. The wheels act as brakes to stop the wheels of the car from turning.

Description of drawings

The accompanying drawings described here are used to provide further understanding of the present invention and constitute a part of the present application. 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 image:

Fig. 1 is the structural schematic diagram of the small and medium-sized vehicle limiting device of the present invention;

Fig. 2 is the structural representation of T-shaped seat in the present utility model;

Fig. 3 is the structural representation of the mounting plate in the present utility model;

4 is a schematic structural diagram of the assembly of a piston cylinder, a piston rod, a rubber buffer block, a brake block, a first compression spring, a second compression spring, a second guide block and a limit ring in the present invention;

Description of symbols in the figure: 1-T-type seat, 2-installation plate, 3-piston cylinder, 4-piston rod, 5-brake block, 6-rubber buffer block, 7-U-shaped hole, 8-support plate, 9- Screw hole, 10-bolt, 11-piston hole, 12-limiting ring, 13-buffer block mounting seat, 14-first compression spring, 15-second compression spring, 16-brake block mounting seat, 17-guide groove , 18-first guide block, 19-second guide block, 20-cavity.

Detailed ways

The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

As shown in Figures 1 to 4, a trolley limit device for a crane includes a T-shaped seat 1, a mounting plate 2, a piston cylinder 3, a piston rod 4, a brake block 5, and a rubber buffer block 6. The upper part of the mounting plate 2 There are two U-shaped holes 7 that are symmetrical about the long axis of the mounting plate 2, and two screw holes 9 that are symmetrical about the long axis of the supporting plate 8 are provided on the support plate 8 of the T-shaped seat 1, and bolts 10 are used to pass through The U-shaped hole 7 is screwed with the corresponding screw hole 9 , so that the upper part of the mounting plate 2 is mounted on the first end of the T-shaped seat 1 .

The lower part of the mounting plate 2 is provided with a circular piston hole 11, the piston cylinder 3 is sleeved in the piston hole 11, and the piston cylinder 3 can move along the axial direction of the piston hole 11 in the piston hole 11, and the tail of the piston cylinder 3 is installed There is a limit ring 12 sleeved on the piston cylinder 3 to prevent the tail of the piston cylinder 3 from slipping out of the piston hole 11; the head end of the piston cylinder 3 is fixed with a buffer block mounting seat 13, and the tail of the rubber buffer block 6 is installed in the buffer In the block mounting seat 13, a first compression spring 14 is sandwiched between the buffer block mounting seat 13 and the mounting plate 2, and the first compression spring 14 is used to apply a thrust to the head end of the piston cylinder 3 to the buffer block mounting seat 13; the piston rod 4 is sleeved in the piston cylinder 3, a second compression spring 15 is sandwiched between the buffer block mounting seat 13 and the piston rod 4, the brake block mounting seat 16 is fixedly connected to the rear end of the piston rod 4, and the rear end of the brake block 5 is mounted on the brake block. In the block mounting seat 16; the side wall of the piston cylinder 3 is provided with a guide groove 17 symmetrically distributed with respect to the center axis of the piston cylinder 3, and the hole wall of the piston hole 11 is installed with two blocks symmetrical with respect to the center axis of the piston hole 11. A guide block 18, two second guide blocks 19 symmetrical to the center axis of the piston rod 4 are installed on the outside of the head of the piston rod 4, the first guide block 18 and the second guide block 19 are both connected with the guide groove 17 in a sliding fit , the second guide block 19 is located between the first guide block 18 and the buffer block mounting seat 13 .

Before the brake block 5 contacts the trolley wheel of the crane, in order to ensure that the piston rod 4 can move together with the piston cylinder 3 , the elastic coefficient of the first compression spring 14 needs to be smaller than that of the second compression spring 15 .

As shown in FIG. 4 , the head of the rubber buffer block 6 is truncated, and the head of the rubber buffer block 6 is provided with a truncated cavity 20, which provides a deformation cavity for the rubber buffer block 6 when it is impacted, and improves the rubber buffer block. The elastic deformation of 6 reduces the impact force when the rubber buffer block 6 collides with the crane.

The trolley limiting device of the crane of the utility model uses the mounting plate, the piston cylinder, the first compression spring, the buffer block mounting seat and the rubber buffer block to cooperate together. When the trolley approaches the end of the guide rail, the rubber buffer block contacts the frame or beam of the crane. , play a buffering role; the piston cylinder, the piston rod, the second compression spring, the buffer block mounting seat and the brake block cooperate together. When the rubber buffer block is pushed toward the mounting plate, the brake block will contact the wheel of the trolley. The wheels of the trolley act as brakes to stop the wheels of the trolley from turning.

The basic principles, main features and advantages of the present invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention There will also be various changes and improvements in the new model, which all fall within the scope of the claimed invention.

Claims (6)

1. a trolley limiting device of a crane, it is characterized in that: comprise T-shaped seat, mounting plate, piston cylinder, piston rod, brake block, rubber buffer block, the upper part of described mounting plate is mounted on the T-shaped seat with bolts. At the first end, the lower part of the mounting plate is provided with a circular piston hole, the piston cylinder is sleeved in the piston hole, the piston rod is sleeved in the piston cylinder, and the head end of the piston cylinder is fixed with a buffer block for installation The rear of the rubber buffer block is installed in the buffer block mounting seat, a first compression spring is sandwiched between the buffer block mounting seat and the mounting plate, and a second compression spring is sandwiched between the buffer block mounting seat and the piston rod A compression spring, the rear end of the piston rod is fixedly connected with a brake block mounting seat, and the rear end of the brake block is mounted in the brake block mounting seat. 2 . The trolley limiting device for a crane according to claim 1 , wherein a limiting ring is installed at the tail of the piston cylinder. 3 . 3. The trolley limiting device for a crane according to claim 1 or 2, wherein the side wall of the piston cylinder is provided with guide grooves symmetrically distributed with respect to the central axis of the piston cylinder, and the piston hole Two first guide blocks symmetrical to the center axis of the piston hole are installed on the hole wall of the piston rod, and two second guide blocks symmetrical to the center axis of the piston rod are installed on the outside of the head of the piston rod. Both the guide block and the second guide block are slidably connected with the guide groove, and the second guide block is located between the first guide block and the buffer block mounting seat. 4 . The trolley limiting device of claim 1 , wherein the elastic coefficient of the first compression spring is smaller than the elastic coefficient of the second compression spring. 5 . 5 . The trolley limiting device for a crane according to claim 1 , wherein the upper part of the mounting plate is provided with two U-shaped holes that are symmetrical with respect to the long axis of the mounting plate, and the T-shaped seat The support plate is provided with two screw holes that are symmetrical with respect to the long axis of the support plate, and the bolts pass through the U-shaped holes and are screwed with the corresponding screw holes. 6 . The trolley limiting device for a crane according to claim 1 , wherein the head of the rubber buffer block is in the shape of a truncated cone, and a truncated truncated cavity is arranged in the head of the rubber buffer block. 7 . .

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