Supporting device with overload alarm function

Abstract

The supporting device with the overload alarm function comprises a wheel, a wheel frame and a wheel fixing frame, the wheel frame is arranged at the upper end of the wheel fixing frame, a wheel shaft of the wheel is installed at the lower end of the wheel fixing frame, the wheel frame is movably connected with the wheel fixing frame, and a damping assembly is connected between the wheel frame and the wheel fixing frame. The damping assembly comprises a connecting piece, an elastic piece and a pressing block, the upper end of the connecting piece is fixedly connected with the pressing block, the lower end of the connecting piece penetrates through the wheel frame to be fixedly connected with the wheel fixing frame, the elastic piece is arranged between the pressing block and the wheel frame, and a travel switch is fixedly arranged on the wheel frame and electrically connected with an alarm device. And when the compression of the elastic piece exceeds a safety range, the pressing block moves downwards to trigger a contact of the travel switch so as to trigger the alarm device to give an alarm, and a user can be warned that the device is overloaded.

Description

Technical Field

[0001] The utility model relates to the technical field of supporting devices, in particular to a supporting device with an overload alarm function. Background Art

[0002] In commonly used lifting operations and handling equipment, such as movable lifting platforms, transport vehicles, platform vehicles and other similar equipment, the support device plays a vital role. The support device not only provides stable support for the equipment, but also ensures the safety and stability of the equipment during use.

[0003] Lifting platforms, as a commonly used engineering equipment, are widely used in factories, warehouses, logistics centers and other places for lifting and moving heavy objects. When using the lifting platform, the operator can adjust the height of the platform as needed to facilitate operations at different working levels. During the operation of the lifting platform, the support device plays a role in stabilizing the platform and ensuring safety.

[0004] A transport truck, also known as a forklift, is a very important handling equipment in the fields of logistics and warehousing; a platform truck, also known as a flatbed truck, trailer, etc., is a vehicle used to transport heavy objects; both transport trucks and platform trucks are used to transport items from one place to another. During the use of transport trucks and platform trucks, the support device also plays a vital role, which can ensure the stability of the vehicle and ensure the safety of items during transportation.

[0005] When using these devices, operators should strictly avoid overloading. Overloading may cause damage to the structure of the equipment, reduce its service life, and may even cause serious safety accidents, which poses a great threat to the personal safety of the operators. However, in the existing technology, it is difficult for operators to accurately judge whether the equipment is overloaded. Operators often rely solely on their own experience and intuition to evaluate the load condition of the equipment, which is not accurate enough. Therefore, it is necessary to improve it. Utility Model Content

[0006] The utility model aims to provide a supporting device with an overload alarm function in view of the defects and shortcomings of the prior art. The supporting device has a simple and reasonable structure and is easy to operate. When overloaded, the supporting device alarms to warn the user that the supporting device is overloaded.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] The utility model describes a supporting device with an overload alarm function, comprising a wheel, a wheel frame and a wheel fixing frame, the wheel frame being arranged at the upper end of the wheel fixing frame, the wheel axle being installed at the lower end of the wheel fixing frame, the wheel frame being movably connected to the wheel fixing frame, a shock absorbing assembly being connected between the wheel frame and the wheel fixing frame, the shock absorbing assembly comprising a connecting piece, an elastic piece and a pressure block, the upper end of the connecting piece being fixedly connected to the pressure block, the lower end of the connecting piece passing through the wheel frame and being fixedly connected to the wheel fixing frame, the elastic piece being arranged between the pressure block and the wheel frame, a travel switch being fixedly provided on the wheel frame, the travel switch being electrically connected to an alarm device, and when the compression of the elastic piece exceeds a safe range, the pressure block moves downward to trigger the contacts of the travel switch and then triggers the alarm device to alarm.

[0009] Furthermore, a bearing seat is fixedly connected to the upper end of the wheel frame.

[0010] Furthermore, a spring sheet is provided on the travel switch, one end of the spring sheet is fixedly connected to the travel switch, the other end of the spring sheet is abutted against the pressing block, and a gap is formed between the spring sheet and the contact of the travel switch.

[0011] Furthermore, the elastic member is a spring.

[0012] Furthermore, the spring is sleeved on the connecting piece.

[0013] Furthermore, one end of the wheel frame is hinged to the wheel fixing frame via a hinge, and the other end of the wheel frame is connected to the wheel fixing frame via the shock absorbing assembly.

[0014] Furthermore, a mounting plate is fixedly provided on the inner wall of the wheel fixing frame, and a waist-shaped hole is provided on the mounting plate along the height direction of the wheel. The hinge passes through the wheel frame, and the wheel fixing frame is arranged in the waist-shaped hole and slidably cooperates with the waist-shaped hole.

[0015] Furthermore, a travel switch fixing seat is fixedly provided at the lower end of the travel switch, and the travel switch fixing seat is fixedly connected to the mounting plate.

[0016] Furthermore, the two side walls of the wheel frame are arranged in an "L" shape.

[0017] Furthermore, the alarm device is a buzzer.

[0018] The beneficial effects of the utility model are as follows: the support device with overload alarm function described in the utility model, the elastic member is arranged between the pressure block and the wheel frame, plays a buffering role, and can effectively absorb and disperse these forces when subjected to external impact. In the no-load state, that is, the upper end of the bearing seat does not bear the load, the travel switch and the pressure block are in a separated state, the two are not in contact, the travel switch is not closed, and the buzzer alarm circuit is not connected; in the rated load state, at this time, the wheel moves toward the wheel frame, and the wheel fixing frame swings downward relative to the wheel frame with the hinge as the fulcrum, so that the spring is compressed and drives the pressure block to move downward. Since the rotation angle of the wheel fixing frame is small, the spring compression is within the safety range, the contact of the travel switch is not triggered, the travel switch is not closed, and the buzzer alarm circuit is not connected; in the overload state, the rotation angle of the wheel fixing frame increases, so that the compression of the spring exceeds the safety range, and the contact of the travel switch is triggered under the action of the pressure block, and the travel switch changes from the open state to the closed state, so that the connected buzzer alarm circuit is connected, thereby triggering the alarm function to warn the user of overload. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model in a normal state at a first viewing angle;

[0020] Figure 2 It is a structural schematic diagram of the utility model in a normal state at a second viewing angle;

[0021] Figure 3 It is a schematic diagram of the structure of the utility model in a normal state from a third viewing angle;

[0022] Figure 4 It is a structural schematic diagram of the utility model in a working state;

[0023] Figure 5 is a structural schematic diagram of a wheel frame;

[0024] Figure 6 It is a structural diagram of the mounting plate.

[0025] Figure 1-6 In: 1. wheel; 2. wheel frame; 3. wheel fixing frame; 31. mounting plate; 311. waist-shaped hole; 4. shock-absorbing assembly; 41. connecting piece; 42. elastic piece; 43. pressure block; 5. travel switch; 51. contact; 52. spring piece; 53. travel switch fixing seat; 6. bearing seat; 7. hinge. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings.

[0027] like Figure 1-6A supporting device with an overload alarm function shown in the figure comprises a wheel 1, a wheel frame 2 and a wheel fixing frame 3, wherein the wheel frame 2 is arranged at the upper end of the wheel fixing frame 3, the wheel axle of the wheel 1 is mounted at the lower end of the wheel fixing frame 3, the wheel frame 2 is movably connected to the wheel fixing frame 3, a shock absorbing assembly 4 is connected between the wheel frame 2 and the wheel fixing frame 3, which can effectively reduce vibration and impact, thereby improving comfort and stability during use, the shock absorbing assembly 4 comprises a connecting member 41, an elastic member 42 and a pressing block 43, the upper end of the connecting member 41 is fixedly connected to the pressing block 43, the lower end of the connecting member 41 passes through the wheel frame 2 and is fixedly connected to the wheel fixing frame 3, the elastic member 42 is arranged at the pressing block 43, A buffering effect is played between the block 43 and the wheel frame 2, which can effectively absorb and disperse these forces when subjected to external impact. Preferably, in this embodiment, the elastic member 42 is a spring, and the spring has excellent elasticity and buffering performance. Preferably, in this embodiment, the spring is sleeved on the connecting member 41 to improve the structural stability. A travel switch 5 is fixedly provided on the wheel frame 2, and the travel switch 5 is electrically connected to an alarm device. When the compression of the elastic member 42 exceeds the safety range, the pressure block 43 moves downward to trigger the contact 51 of the travel switch 5 and then triggers the alarm device to alarm. Preferably, in this embodiment, the alarm device is a buzzer to warn the user that the device may be overloaded.

[0028] Preferably, in this embodiment, refer to Figure 1 The travel switch 5 is provided with a spring piece 52, one end of which is fixedly connected to the travel switch 5, and the other end of the spring piece 52 is abutted against the pressing block 43. Specifically, under normal conditions, a gap is formed between the spring piece 52 and the contact 51 of the travel switch 5, that is, the spring piece 52 does not contact the contact 51 of the travel switch 5. When the pressing block 43 moves downward, it presses the spring piece 52 downward, so that the spring piece 52 gradually approaches the contact 51 of the travel switch 5. When the spring piece 52 triggers the contact 51 of the travel switch 5, the travel switch 5 changes from an open state to a closed state, so that the connected buzzer alarm circuit is connected, thereby triggering the alarm function.

[0029] Preferably, in this embodiment, one end of the wheel frame 2 is hinged to the wheel fixing frame 3 via a hinge 7, and the other end of the wheel frame 2 is connected to the wheel fixing frame 3 via the shock absorbing assembly 4. When loaded, the wheel fixing frame 3 swings downward relative to the wheel frame 2 with the hinge 7 as a fulcrum, and acts on the shock absorbing assembly 4 to realize the shock absorbing function.

[0030] Preferably, in this embodiment, the upper end of the wheel frame 2 is fixedly connected to a bearing seat 6, and the upper end of the bearing seat 6 is used to receive and support the load.

[0031] Preferably, in this embodiment, refer to Figure 2A mounting plate 31 is also fixedly disposed on the inner wall of the wheel fixing frame 3, and a waist-shaped hole 311 is disposed on the mounting plate 31 along the height direction of the wheel 1. The hinge 7 passes through the wheel frame 2, and the wheel fixing frame 3 is disposed in the waist-shaped hole 311 and slidably cooperates with the waist-shaped hole 311, allowing the wheel fixing frame 3 to move along the direction of the waist-shaped hole 311, while maintaining certain restrictions to prevent the wheel fixing frame 3 from excessive movement.

[0032] Preferably, in this embodiment, a travel switch fixing seat 53 is fixedly provided at the lower end of the travel switch 5, and the travel switch fixing seat 53 is fixedly connected to the mounting plate 31 by bolts. Specifically, the bolts pass through the travel switch fixing seat 53, the travel switch 5 and the mounting plate 31 in sequence, and are fixedly connected, which can effectively prevent the travel switch 5 from being unexpectedly displaced and affecting its use.

[0033] Preferably, in this embodiment, the two side walls of the wheel frame 2 are arranged in an "L" shape, which helps to enhance the load-bearing capacity and stability of the wheel frame 2, and is also beneficial to saving materials and reducing unnecessary weight.

[0034] See also Figure 1-3 In the no-load state, that is, the upper end of the bearing seat 6 does not bear the load, the travel switch 5 and the pressure block 43 are in a separated state, the two are not in contact, the travel switch 5 is not closed, and the buzzer alarm circuit is not connected; in the rated load state, at this time, the wheel 1 moves toward the wheel frame 2, and the wheel fixing frame 3 swings downward relative to the wheel frame 2 with the hinge 7 as the fulcrum, so that the spring is compressed and drives the pressure block 43 to move downward. Since the rotation angle of the wheel fixing frame 3 is small, the spring compression is within the safety range, and the contact 51 of the travel switch 5 is not triggered, the travel switch 5 is not closed, and the buzzer alarm circuit is not connected; in the overload state, refer to Figure 4 , the rotation angle of the wheel fixing frame 3 increases, causing the compression of the spring to exceed the safe range. Under the action of the pressure block 43, the contact 51 of the travel switch 5 is triggered, and the travel switch 5 changes from an open state to a closed state, so that the connected buzzer alarm circuit is connected, thereby triggering the alarm function to warn the user of overload. It should be noted that the compression stroke of the spring will change according to the change of the material and pitch of the spring.

[0035] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A support device with an overload alarm function, comprising a wheel (1), a wheel frame (2) and a wheel fixing frame (3), wherein the wheel frame (2) is arranged at the upper end of the wheel fixing frame (3), and the wheel axle of the wheel (1) is mounted at the lower end of the wheel fixing frame (3), characterized in that: The wheel frame (2) is movably connected to the wheel fixing frame (3); a shock absorbing assembly (4) is connected between the wheel frame (2) and the wheel fixing frame (3); the shock absorbing assembly (4) comprises a connecting piece (41), an elastic piece (42) and a pressure block (43); the upper end of the connecting piece (41) is fixedly connected to the pressure block (43); the lower end of the connecting piece (41) passes through the wheel frame (2) and is fixedly connected to the wheel fixing frame (3); the elastic piece (42) is arranged between the pressure block (43) and the wheel frame (2); a travel switch (5) is fixedly provided on the wheel frame (2); the travel switch (5) is electrically connected to an alarm device; when the compression of the elastic piece (42) exceeds a safe range, the pressure block (43) moves downward to trigger a contact (51) of the travel switch (5), thereby triggering the alarm device to sound an alarm.

2. A supporting device with overload alarm function according to claim 1, characterized in that: A bearing seat (6) is fixedly connected to the upper end of the wheel frame (2).

3. A supporting device with overload alarm function according to claim 1, characterized in that: The travel switch (5) is provided with a spring sheet (52), one end of the spring sheet (52) is fixedly connected to the travel switch (5), the other end of the spring sheet (52) is abutted against the pressing block (43), and a gap is formed between the spring sheet (52) and the contact (51) of the travel switch (5).

4. The supporting device with overload alarm function according to claim 1, characterized in that: The elastic member (42) is a spring.

5. A supporting device with overload alarm function according to claim 4, characterized in that: The spring sleeve is arranged on the connecting piece (41).

6. The supporting device with overload alarm function according to claim 1, characterized in that: One end of the wheel frame (2) is hinged to the wheel fixing frame (3) via a hinge (7), and the other end of the wheel frame (2) is connected to the wheel fixing frame (3) via the shock absorbing assembly (4).

7. A supporting device with overload alarm function according to claim 6, characterized in that: The inner wall of the wheel fixing frame (3) is also fixedly provided with a mounting plate (31), the mounting plate (31) being provided with a waist-shaped hole (311) along the height direction of the wheel (1), the hinge (7) passing through the wheel frame (2), the wheel fixing frame (3) being arranged in the waist-shaped hole (311) and being slidably matched with the waist-shaped hole (311).

8. The supporting device with overload alarm function according to claim 7, characterized in that: A travel switch fixing seat (53) is fixedly provided at the lower end of the travel switch (5), and the travel switch fixing seat (53) is fixedly connected to the mounting plate (31).

9. The supporting device with overload alarm function according to claim 1, characterized in that: The two side walls of the wheel frame (2) are arranged in an "L" shape.

10. The supporting device with overload alarm function according to claim 1, characterized in that: The alarm device is a buzzer.

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