Buffer device of crane trolley

Abstract

The utility model discloses a buffer device of a crane trolley, which comprises a detection mechanism and buffers, the detection mechanism is mounted in the middle of the crane trolley, and the buffers are mounted on two sides of the detection mechanism; the detection mechanism comprises a detection box and two detection plates which are oppositely arranged, the middle parts of the detection plates are rotationally connected in the detection box, the top ends of the detection plates penetrate through the detection box and are arranged outside the detection box, a detection roller is rotationally connected between the tops of the detection plates, and reset springs are arranged between the bottoms of the detection plates and the inner wall of the detection box; a proximity switch matched with the detection plate is also arranged on the inner wall of the detection box; the buffer device can brake the crane carriage during collision, and under the dual effects of the crane carriage and the buffer, the parking distance of the crane carriage is reduced, the pressure of the buffer is relieved, and the parking safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of lifting mechanical equipment, in particular to a buffer device of a crane trolley. Background Art

[0002] The hoisting trolley is a mechanism that moves on the main beam of the crane and is used to drive the lifting equipment to move. When the trolley runs to the end of the main beam, it is necessary to ensure that the hoisting trolley can stop safely. This requires a buffer device to be installed at the end of the hoisting trolley. Most of the existing buffer devices use buffer springs to absorb the impact generated during a collision and prevent the movement of the hoisting trolley to play a buffering role. However, this buffering method has high requirements on the buffer and causes greater damage, which increases the cost of using the buffer device. Utility Model Content

[0003] The utility model aims to provide a buffer device for a crane trolley, which can brake the crane trolley in case of collision, and under the dual effects of the crane trolley and the buffer, the parking distance of the crane trolley is reduced, the pressure of the buffer is relieved, and the parking safety is improved.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a buffer device for a crane trolley, including a detection mechanism and a buffer, the detection mechanism is installed in the middle position of the lifting trolley, and the buffer is installed on both sides of the detection mechanism; the detection mechanism includes a detection box and two detection plates arranged opposite to each other, the middle part of the detection plate is rotatably connected in the detection box, the top of the detection plate passes through the detection box and is arranged outside the detection box, a detection roller is rotatably connected between the tops of the detection plates, and a reset spring is arranged between the bottom of the detection plate and the inner wall of the detection box; a proximity switch matching the detection plate is also arranged on the inner wall of the detection box.

[0005] Optionally, a synchronization rod is fixedly connected between the bottoms of the two detection plates.

[0006] Optionally, a plurality of return springs are provided and are evenly arranged between the synchronization rod and the inner wall of the detection box.

[0007] Optionally, positioning blocks are provided on the inner walls of the synchronization rod and the detection box, and the reset spring is sleeved on the positioning blocks.

[0008] Optionally, two proximity switches are provided, corresponding to two detection boards respectively.

[0009] The buffer device of the crane trolley of the utility model has the following advantages:

[0010] (1) When the detection roller touches the limit plate or other obstacles, it will drive the detection plate to rotate. When the detection plate rotates to the sensing area of ​​the proximity switch, the controller stops the running mechanism of the trolley and starts the braking mechanism. At the same time, the buffers on both sides will also prevent the trolley from moving further. Under the dual effects of the buffers and the trolley braking mechanism, the parking distance of the trolley will be reduced, the parking safety will be improved, and the impact on the buffer will be reduced, thereby increasing the service life of the buffer and reducing the operating cost.

[0011] (2) The synchronization rod can make the detection plates on both sides rotate synchronously to avoid jamming and affect the triggering of the proximity switch.

[0012] (3) The setting of the positioning block facilitates the installation of the return spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a cross-sectional view from above of the detection mechanism.

[0015] Figure 3 It is a side sectional view of the detection mechanism. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings.

[0017] like Figure 1-Figure 3 As shown, a buffer device for a crane trolley includes a detection mechanism and a buffer 1. The detection mechanism is installed in the middle position of the lifting trolley 2. There are two buffers 1 and they are installed on both sides of the detection mechanism. The detection mechanism includes a detection box 3 and two detection plates 4 arranged opposite to each other. The middle part of the detection plate 4 is rotatably connected in the detection box 3. The top of the detection plate 4 passes through the detection box 3 and is arranged outside the detection box 3. The top of the detection plate 4 is rotatably connected with a detection roller 5. The bottom of the detection plate 4 is fixedly connected with a synchronization rod 6, so that the detection plates 4 on both sides can rotate synchronously without getting stuck. A number of reset springs 7 are evenly arranged between the synchronization rod 6 and the inner wall of the detection box 3. Positioning blocks 8 are arranged on the synchronization rod 6 and the inner wall of the detection box 3. The reset spring 7 is sleeved on the positioning block 8. The positioning block 8 facilitates the installation of the reset spring 7 and does not affect the action of the reset spring 7. A proximity switch 9 matching the detection plate 4 is also provided on the inner wall of the detection box 3. Two proximity switches 9 are provided, corresponding to the two detection plates 4 respectively. The proximity switches 9 are electrically connected to the controller, and the controller controls the traveling mechanism and braking mechanism of the lifting trolley 2.

[0018] When the detection roller 5 touches the limit plates at both ends of the main beam or other obstacles on the track, as the trolley 2 continues to move, the obstacle will squeeze the detection roller 5 and drive the detection plate 4 to rotate. When the detection plate 4 rotates to the sensing area of ​​the proximity switch 9, the controller controls the traveling mechanism of the trolley 2 to stop running and activates the braking mechanism to disconnect the power of the trolley 2. As long as one of the two proximity switches 9 receives a signal, the controller will trigger the action of the controller to improve safety. At the same time, the buffers 1 on both sides will also contact the obstacles to prevent the trolley 2 from continuing to move. Under the dual action of the buffer 1 and the braking mechanism of the trolley 2, the parking distance of the trolley 2 will be reduced, so that the trolley 2 can stop moving at the first time, improving the speed and safety of the parking of the trolley 2, and the impact on the buffer 1 will also be reduced, thereby increasing the service life of the buffer 1 and reducing the operating cost.

[0019] The embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the utility model.

Claims

1. A buffer device for a crane trolley, characterized in that: It includes a detection mechanism and a buffer, the detection mechanism is installed in the middle position of the lifting trolley, and the buffer is installed on both sides of the detection mechanism; the detection mechanism includes a detection box and two detection plates arranged opposite to each other, the middle part of the detection plate is rotatably connected in the detection box, the top of the detection plate passes through the detection box and is arranged outside the detection box, the top of the detection plate is rotatably connected with a detection roller, and a reset spring is arranged between the bottom of the detection plate and the inner wall of the detection box; a proximity switch matching the detection plate is also arranged on the inner wall of the detection box.

2. The buffer device of the crane trolley according to claim 1, characterized in that: A synchronization rod is fixedly connected between the bottoms of the two detection plates.

3. The buffer device of the crane trolley according to claim 2, characterized in that: A plurality of return springs are provided and are evenly arranged between the synchronization rod and the inner wall of the detection box.

4. The buffer device of the crane trolley according to claim 3, characterized in that: Positioning blocks are arranged on the inner wall of the synchronization rod and the detection box, and the reset spring is sleeved on the positioning blocks.

5. The buffer device of the crane trolley according to claim 1, characterized in that: There are two proximity switches, corresponding to the two detection boards respectively.

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