A speed limiting device for a vertical lifting stereo garage

Abstract

The present application relates to the field of safety facilities, and in particular to a speed limiting device for a vertical lifting type multi-story parking garage, which includes a base and a sprocket rotatably connected to the base, a centrifugal hammer rotatably connected to the sprocket, and the rotation axis of the centrifugal hammer is eccentrically arranged with the axis of the sprocket. When the sprocket rotates, one end of the centrifugal hammer can move away from the center of the sprocket under the action of centrifugal force. A detection module for detecting the moving distance of one end of the centrifugal hammer is arranged between the base and the sprocket, and the detection module outputs a stop signal when it detects that the moving distance of one end of the centrifugal hammer exceeds a set value.

Description

Technical Field

[0001] The present application relates to the field of safety facilities, and in particular to a speed limiting device for a vertical lifting type stereo garage. Background Art

[0002] A three-dimensional garage is a mechanical or mechanical equipment system used to store and retrieve vehicles in maximum quantity. Vehicles are raised or lowered by some devices to enable them to be placed in a three-dimensional manner, thereby reducing the area occupied by the vehicles. When lifting and lowering vehicles, a speed limiting device is required to prevent chain breakage and fastening failure.

[0003] At present, most of the speed limiting devices use safety clamp type speed limiters to achieve the speed limiting effect. Safety clamps include unidirectional safety clamps and bidirectional safety clamps. Due to the complex manufacturing process of bidirectional safety clamps, safety clamps mainly use unidirectional safety clamps. When in use, the unidirectional safety clamp must be used in conjunction with the speed limiter, making the structure of the speed limiting device complex. And the two brake rope blocks of the unidirectional safety clamp must be clamped on both sides of the guide rail, so the guide rail used should be a solid guide rail. However, the hollow guide rails of the current stereo garage are mostly hollow guide rails. Therefore, it is very necessary to design a speed limiting device that can meet the needs of the stereo garage and can be installed on the hollow guide rail. Summary of the invention

[0004] In order to simplify the structure of the speed limiting device and enable the speed limiting device to match the hollow guide rails of a multi-story parking garage, the present application provides a speed limiting device for a vertical lifting multi-story parking garage.

[0005] The speed limiting device of a vertical lifting stereo garage provided in the present application adopts the following technical solution:

[0006] A speed limiting device for a vertical lifting type multi-story parking garage comprises a base and a sprocket rotatably connected to the base, a centrifugal hammer rotatably connected to the sprocket, a rotation axis of the centrifugal hammer and an axis of the sprocket being eccentrically arranged, when the sprocket rotates, one end of the centrifugal hammer can move in a direction away from the center of the sprocket under the action of centrifugal force, a detection module for detecting the moving distance of one end of the centrifugal hammer is arranged between the base and the sprocket, and a stop signal is output when the detection module detects that the moving distance of one end of the centrifugal hammer exceeds a set value.

[0007] By adopting the above technical solution, when in use, the base is installed on the hollow guide rail of the stereo garage, the sprocket is meshed with the transmission chain used to transmit the lifting fork, and then the detection module is connected to the driving device that drives the transmission chain to move. When the transmission chain starts to operate, the transmission chain drives the sprocket to rotate. When the transmission chain rotates too fast, one end of the centrifugal hammer moves away from the center of the sprocket under the action of centrifugal force. At this time, the length between the end of the centrifugal hammer and the detection module is reduced. When the distance between the end of the centrifugal hammer and the detection module is less than the set value, the detection module sends a stop signal, and the driving device that drives the transmission chain to move stops working after receiving the stop signal, which simplifies the structure of the speed limiting device, and the base can be installed in the hollow guide rail, so that the speed limiting device can match the hollow guide rail of the stereo garage.

[0008] Optionally, the detection module includes a proximity switch installed on the base. When one end of the centrifugal hammer moves away from the center of the sprocket under the action of centrifuge, the distance between the centrifugal hammer and the proximity switch gradually decreases. When the end of the centrifugal hammer reaches the detection distance of the proximity switch, the proximity switch cuts off the circuit.

[0009] By adopting the above technical solution, when the sprocket rotates, the end of the centrifugal hammer moves away from the center of the sprocket under the action of centrifugal force until the distance from the proximity switch is less than the set value. When the proximity switch detects that the distance from the end of the centrifugal hammer is less than the set value, it will be actuated to cut off the circuit and the transmission chain will stop running.

[0010] Optionally, two centrifugal hammers are provided, and the two centrifugal hammers are arranged at intervals around the sprocket axis.

[0011] By adopting the above technical solution, when the sprocket rotates, the two centrifugal hammers can move away from the center of the sprocket under the centrifugal action. When the sprocket rotation speed reaches the maximum safe speed, the proximity switch detects that the length from the end of the centrifugal hammer is less than the set value and acts to cut off the circuit, and the transmission chain stops running.

[0012] Optionally, an address plate is fixedly connected to one side of the centrifugal hammer away from the sprocket axis, and the proximity switch detects the distance between the address plate and the end of the centrifugal hammer.

[0013] By adopting the above technical solution, when the rotation speed of the sprocket reaches the upper limit of the safe speed, one end of the centrifugal hammer gradually extends outward under the action of centrifugal force until the distance between it and the proximity switch is less than the set value. When the proximity switch detects that the length from the end of the centrifugal hammer is less than the set value, it will act to cut off the circuit and the transmission chain will stop running.

[0014] Optionally, the middle part of the centrifugal hammer is rotatably connected to the sprocket, and a tension spring is fixedly connected between either end of the centrifugal hammer and the sprocket.

[0015] By adopting the above technical solution, when the sprocket rotates, the centrifugal force exerted on one end of the centrifugal hammer drives the tension spring to deform. When the rotation speed of the sprocket reaches the upper limit of the safe speed, one end of the centrifugal hammer drives the tension spring to make one end of the centrifugal hammer move away from the center of the sprocket.

[0016] Optionally, a connecting rod is connected between the two centrifugal hammers, and the connecting rod is located at an end of the centrifugal hammer away from the tension spring.

[0017] By adopting the above technical solution, the connecting rod makes the tension of the tension spring on the two centrifugal hammers the same. When the sprocket rotates, one end of the two centrifugal hammers moves away from the center of the sprocket. At this time, the length between the end of the centrifugal hammer and the detection module is reduced. When the rotation speed of the sprocket reaches the upper limit of the safe speed, the connecting rod makes the movement distance of one end of the two centrifugal hammers the same. When the proximity switch detects that the length from the end of the centrifugal hammer is less than the set value, it will be actuated to cut off the circuit, and the transmission chain will stop running to achieve speed limit.

[0018] Optionally, two sprockets are symmetrically arranged, and the end of the centrifugal hammer is rotatably connected to the sprocket. The two sprockets are mirror images of each other. When an external force drives the two sprockets to rotate clockwise, the end of the centrifugal hammer on one of the sprockets can move away from the center of the sprocket under the action of centrifugal force. When an external force drives the two sprockets to rotate counterclockwise, the end of the centrifugal hammer on the other sprocket can move away from the center of the sprocket under the action of centrifugal force.

[0019] By adopting the above technical solution, when the transmission chain transmits the lifting fork upward, the two sprockets rotate counterclockwise, and the centrifugal hammers on the two sprockets move away from the center of the sprocket. At this time, the distance between the end of one of the centrifugal hammers and the proximity switch is reduced; when the transmission chain transmits the lifting fork downward, the two sprockets rotate clockwise, and the distance between the ends of the two centrifugal hammers on the other sprocket and the proximity switch is reduced. When the proximity switch detects that the length from the end of the centrifugal hammer is less than the set value, it will operate to cut off the circuit, so that the transmission chain stops continuing to transmit the lifting fork.

[0020] Optionally, a chain pressing block is installed on the base, and an installation space is formed between the chain pressing block and the sprocket.

[0021] By adopting the above technical solution, the chain pressing block restricts the transmission chain within the installation space between the sprocket and the chain pressing block, reducing the possibility of the chain detaching from the hollow guide rail of the three-dimensional parking garage. During installation, the base is installed on the hollow guide rail of the three-dimensional parking garage, and the sprocket is engaged with the transmission chain for transmitting the lifting fork, and then the detection module is connected to the driving device that drives the transmission chain to move.

[0022] Optionally, a mounting plate for fixing the position of the base is fixedly connected to a side of the base away from the chain pressing block.

[0023] By adopting the above technical solution, the mounting plate enables the speed limiting device of the vertical lifting type stereo garage to be installed as a whole in the hollow guide rail, thereby achieving the matching of the speed limiting device and the hollow guide rail of the stereo garage.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. By setting up a base, a sprocket, a centrifugal hammer and a detection module, when the sprocket rotates, the centrifugal hammer moves one end of the centrifugal hammer away from the center of the sprocket under the action of centrifugal force, and the distance between the end of the centrifugal hammer and the detection module is shortened. When the distance between the end of the centrifugal hammer and the detection module is less than the set value, a stop signal is output. This arrangement simplifies the structure of the speed limiting device, and the base can be installed in the hollow guide rail, so that the speed limiting device can match the hollow guide rail of the stereo garage;

[0026] 2. By setting a proximity switch and a tension spring, when the centrifugal force generated on the centrifugal hammer is greater than the tension of the tension spring, one end of the centrifugal hammer will move away from the center of the sprocket, and the distance between the end of the centrifugal hammer and the detection module will be shortened. When the distance between the end of the centrifugal hammer and the detection module is less than the set value, the circuit is cut off to achieve speed limit;

[0027] 3. By setting up two centrifugal hammers, when one of the centrifugal hammers fails, the speed can be limited by detecting through the proximity switch whether the length from the end of the other centrifugal hammer is less than the set value. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0029] Figure 2 It is a schematic diagram of the overall structure of Example 2 of the present application.

[0030] Figure 3 It is a schematic diagram of the overall structure of Example 3 of the present application.

[0031] Explanation of the reference numerals: 1. base; 2. sprocket; 3. centrifugal hammer; 4. transmission chain; 5. detection module; 51. address plate; 52. proximity switch; 6. tension spring; 7. connecting rod; 8. mounting plate; 9. chain pressure block. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-3 This application is described in further detail.

[0033] The embodiment of the present application discloses a speed limiting device for a vertical lifting type stereo garage.

[0034] Example 1

[0035] Reference Figure 1 A speed limiting device for a vertical lifting type stereoscopic parking garage comprises a base 1 and a sprocket 2 rotatably connected to the base 1, a centrifugal hammer 3 is rotatably connected to the sprocket 2, and the rotation axis of the centrifugal hammer 3 is eccentrically arranged with the axis of the sprocket 2. Under the action of centrifugal force, the end of the centrifugal hammer 3 moves away from the center of the sprocket 2. At the same time, a detection module 5 for detecting the moving distance of one end of the centrifugal hammer 3 is arranged between the base 1 and the sprocket 2. When the detection module 5 detects that the moving distance of one end of the centrifugal hammer 3 extending out of the sprocket 2 exceeds a set value, a stop signal is output.

[0036] When in use, the base 1 is installed on the hollow guide rail of the stereo garage, and the sprocket 2 is meshed with the transmission chain 4 for transmitting the lifting fork, and then the detection module 5 is connected to the driving device that drives the transmission chain 4 to move. When the transmission chain 4 starts to operate, the transmission chain 4 drives the sprocket 2 to rotate. When the speed of the transmission chain 4 rotating is too fast, one end of the centrifugal hammer 3 moves away from the center of the sprocket under the action of centrifugal force. At this time, the detection module 5 detects that one end of the centrifugal hammer 3 moves away from the center of the sprocket. At this time, the length between the end of the centrifugal hammer 3 and the detection module is reduced. When the distance between the end of the centrifugal hammer 3 and the detection module is less than the set value, a stop signal will be issued, and the driving device that drives the transmission chain 4 to move stops working after receiving the stop signal. The structure of the speed limiting device is simplified, and the base 1 can be installed in the hollow guide rail, so that the speed limiting device can match the hollow guide rail of the stereo garage.

[0037] A tension spring 6 is fixedly connected between either end of the centrifugal hammer 3 and the sprocket 2. The elastic modulus of the tension spring 6 is set according to the safe speed of the rotation speed of the sprocket 2, and the elastic deformation of the tension spring 6 is linearly related to the rotation speed of the sprocket 2. When the sprocket 2 rotates, the centrifugal force exerted on one end of the centrifugal hammer 3 drives the tension spring 6 to deform. When the rotation speed of the sprocket 2 reaches the upper limit of the safe speed, one end of the centrifugal hammer 3 stretches or compresses the tension spring 6, so that one end of the centrifugal hammer 3 moves away from the center of the sprocket 2.

[0038] The detection module 5 includes a proximity switch 52 installed on the base 1, the contact of the proximity switch 52 is arranged toward the sprocket 2, and the proximity switch 52 is connected to the driving device that drives the transmission chain 4 to control the start and stop of the driving device. The middle part of the centrifugal hammer 3 is rotationally connected to the sprocket 2. When the sprocket 2 rotates clockwise, as the speed of the transmission chain 4 increases, one end of the centrifugal hammer 3 gradually extends outward under the action of centrifugal force until the distance between the centrifugal hammer 3 and the proximity switch 52 is less than the set value. When the proximity switch 52 detects that the length from the end of the centrifugal hammer 3 is less than the set value, it acts to cut off the circuit, so that the transmission chain 4 stops continuing to transmit the lifting fork.

[0039] Of course, it is understandable that the detection module 5 may also use a slot-type switch, and the specific selection can be made according to actual needs.

[0040] Reference Figure 1 Two centrifugal hammers 3 can be provided, and the two centrifugal hammers 3 are arranged at intervals around the axis of the sprocket wheel 2. When the rotation speed of the sprocket wheel 2 is too fast and one of the centrifugal hammers fails, the speed limit can be achieved by detecting whether the distance from the end of the other centrifugal hammer is less than the set value through the proximity switch.

[0041] A connecting rod 7 is rotatably connected between the two centrifugal hammers 3 on the sprocket 2. The connecting rod 7 is located at one end of the centrifugal hammer 3 away from the tension spring 6. The connecting rod 7 makes the two centrifugal hammers 3 receive the same tension from the tension spring 6 when the sprocket 2 rotates. When the sprocket 2 rotates, one end of the two centrifugal hammers 3 rotates outward from the sprocket 2 under the action of centrifugal force, and drives the tension spring 6 to deform. When the rotation speed of the sprocket 2 reaches the upper limit of the safe speed, one end of the two centrifugal hammers 3 moves away from the center of the sprocket 2 until the distance between them and the proximity switch 52 is less than the set value. When the proximity switch 52 detects that the length from the end of the centrifugal hammer 3 is less than the set value, it will be activated to cut off the circuit to achieve speed limit.

[0042] Two address plates 51 may be provided on each centrifugal hammer 3, and the two address plates 51 are fixedly connected to the side of the centrifugal hammer 3 away from the axis of the sprocket 2, and the two address plates 51 are located at both ends of the centrifugal hammer 3. The proximity switch 52 detects the distance from the end of the centrifugal hammer 3 through the address plate 51, so that the detection of whether the sprocket 2 is overspeed is more accurate.

[0043] A chain pressing block 9 is fixedly connected to the base 1. The chain pressing block 9 is L-shaped as a whole. One side of the chain pressing block 9 is connected to the base 1, and the other side of the chain pressing block 9 forms an installation space for the transmission chain 4 to be embedded between the sprocket 2 and the chain pressing block 9. The chain pressing block 9 limits the lateral displacement of the transmission chain 4 between the sprocket 2 and the chain pressing block 9, reducing the possibility of the chain escaping from the hollow guide rail of the stereo garage. During installation, the base 1 is connected to the hollow guide rail of the stereo garage, and the transmission chain 4 is meshed with the sprocket 2, and then the chain pressing block 9 is fixed to the base 1, so that the position of the transmission chain 4 in the installation space is fixed by the chain pressing block 9, so as to prevent the transmission chain 4 from slipping out of the installation space and being out of mesh with the sprocket 2.

[0044] In order to facilitate the installation of the base 1 on the hollow guide rail of the stereo garage, a mounting plate 8 is fixedly connected to the side of the base 1 away from the chain pressure block 9, and the mounting plate 8 is connected to the hollow guide rail of the stereo garage by bolts to fix the base 1. The speed limiting device of the vertical lifting stereo garage can be installed as a whole in the hollow guide rail, so as to match the speed limiting device with the hollow guide rail of the stereo garage.

[0045] Of course, the sprocket 2 pressing block can also be fixed on the mounting plate 8, and the specific location can be determined according to actual needs.

[0046] The implementation principle of embodiment 1 is as follows: during installation, the mounting plate 8 is connected to the hollow guide rail of the stereo garage by bolts, the transmission chain 4 is meshed with the sprocket 2, and the chain pressing block 9 is fixed to the base 1 or the mounting plate 8. When the transmission chain 4 transmits the lifting fork upward, the sprocket 2 rotates counterclockwise, and each centrifugal hammer 3 rotates around the rotation axis of the sprocket 2 under the action of centrifugal force and pulls the tension spring 6 to deform. When the rotation speed of the sprocket 2 exceeds the safe speed, one end of the two centrifugal hammers 3 moves away from the center of the sprocket 2 under the action of centrifugal force until the distance between the proximity switch 52 is less than the set value. When the proximity switch 52 detects that the length of the address plate 51 at the end of the centrifugal hammer 3 is less than the set value, it acts to cut off the circuit, so that the transmission chain 4 stops continuing to transmit the lifting fork. When the transmission chain 4 transmits the lifting fork downward, the sprocket 2 rotates clockwise, and the other ends of the two centrifugal hammers 3 gradually extend outward under the centrifugal action, and the centrifugal hammers 3 compress the tension spring 6 to deform. When the sprocket 2 rotates beyond the safe speed, the ends of the two centrifugal hammers 3 move away from the center of the sprocket 2 until the distance between them and the proximity switch 52 is less than the set value. When the proximity switch 52 detects that the length of the identification plate 51 at the end of the centrifugal hammer 3 is less than the set value, it will act to cut off the circuit, the drive device stops working, and the transmission chain 4 stops continuing to transport the lifting fork.

[0047] Example 2

[0048] Reference Figure 2 The difference between this embodiment and the embodiment is that the connection method between the two centrifugal hammers 3 is different.

[0049] One end of the two centrifugal hammers 3 is fixedly connected to the sprocket 2 with a tension spring 6, and one end of the tension spring 6 fixed to the two centrifugal hammers 3 is symmetrical with respect to the axis of the sprocket 2. When the sprocket 2 rotates, the two centrifugal hammers 3 will stretch or compress the two tension springs 6 at the same time. When the rotation speed of the sprocket 2 reaches the upper limit of the safe speed, the ends of the two centrifugal hammers 3 will gradually extend outward under the action of centrifugal force until the distance between them and the proximity switch is less than the set value. When the proximity switch 52 detects that the distance from the end of the centrifugal hammer 3 is less than the set value, it will be actuated to cut off the circuit, so that the transmission chain 4 stops continuing to transmit the lifting fork.

[0050] Example 3

[0051] Reference Figure 3The difference between this embodiment and the first embodiment is that the end of each centrifugal hammer 3 is rotatably connected to the sprocket 2, so there are two sprockets 2, and the two sprockets 2 are mirror images of each other, so that when the two sprockets 2 are driven by external force to rotate clockwise, the distance between the addressing piece 51 at the end of the two centrifugal hammers 3 on one of the sprockets 2 and the proximity switch 52 is reduced; when the two sprockets 2 are driven by external force to rotate counterclockwise, the distance between the addressing piece 51 at the end of the other centrifugal hammer 3 and the proximity switch 52 is reduced. When the proximity switch 52 detects that the distance from the end of the centrifugal hammer 3 is less than the set value, it acts to cut off the circuit, so that the transmission chain 4 stops continuing to transmit the lifting fork.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A speed limiting device for a vertical lifting stereo garage, characterized in that: The invention comprises a base (1) and a sprocket (2) rotatably connected to the base (1); a centrifugal hammer (3) is rotatably connected to the sprocket (2); the rotation axis of the centrifugal hammer (3) is eccentrically arranged with the axis of the sprocket (2); when the sprocket (2) rotates, one end of the centrifugal hammer (3) can move in a direction away from the center of the sprocket (2) under the action of centrifugal force; a detection module (5) for detecting the moving distance of one end of the centrifugal hammer (3) is arranged between the base (1) and the sprocket (2); and when the detection module (5) detects that the moving distance of one end of the centrifugal hammer (3) exceeds a set value, a stop signal is output; The detection module (5) comprises a proximity switch (52) mounted on the base (1); when one end of the centrifugal hammer (3) moves in a direction away from the center of the sprocket (2) under the action of centrifugation, the distance between the centrifugal hammer (3) and the proximity switch (52) gradually decreases; when the end of the centrifugal hammer (3) reaches the detection distance of the proximity switch (52), the proximity switch (52) cuts off the circuit; Two centrifugal hammers (3) are provided, and the two centrifugal hammers (3) are arranged at intervals around the axis of the sprocket wheel (2); Two sprockets (2) are symmetrically arranged, and the ends of the centrifugal hammers (3) are rotatably connected to the sprockets (2). The two sprockets (2) are in a mirror image relationship with each other. When an external force drives the two sprockets (2) to rotate clockwise, the end of the centrifugal hammer (3) on one of the sprockets (2) can move in a direction away from the center of the sprocket (2) under the action of centrifugal force. When an external force drives the two sprockets (2) to rotate counterclockwise, the end of the centrifugal hammer (3) on the other sprocket (2) can move in a direction away from the center of the sprocket (2) under the action of centrifugal force.

2. The speed limiting device for a vertical lifting stereo garage according to claim 1 is characterized in that: An address recognition plate (51) is fixedly connected to the side of the centrifugal hammer (3) away from the axis of the sprocket (2), and the proximity switch (52) is used to detect the distance between the address recognition plate (51) and the end of the centrifugal hammer (3).

3. A speed limiting device for a vertical lift type stereo garage according to any one of claims 1-2, characterized in that: The middle part of the centrifugal hammer (3) is rotatably connected to the sprocket (2), and a tension spring (6) is fixedly connected between either end of the centrifugal hammer (3) and the sprocket (2).

4. The speed limiting device for a vertical lifting type stereo garage according to claim 3 is characterized in that: A connecting rod (7) is connected between the two centrifugal hammers (3), and the connecting rod (7) is located at one end of the centrifugal hammer (3) away from the tension spring (6).

5. The speed limiting device for a vertical lifting type stereo garage according to claim 1 is characterized in that: A chain pressing block (9) is installed on the base (1), and an installation space is formed between the chain pressing block (9) and the sprocket (2).

6. The speed limiting device for a vertical lifting stereo garage according to claim 5 is characterized in that: A side of the base (1) away from the chain pressing block (9) is fixedly connected to a mounting plate (8) for fixing the position of the base (1).

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