Pressure buffering protection device suitable for spinning handle

Abstract

The utility model belongs to the technical field of driving mechanical handles, and particularly relates to a pressure buffering protection device suitable for a spinning handle, which comprises a control frame, a handrail is arranged on one side of the control frame, the spinning handle is arranged in the control frame, the spinning handle comprises two bearing seats, a rotating shaft is arranged between the two bearing seats, and the rotating shaft is connected with the control frame. The spinning handles are designed to be in a C shape and arranged at the two ends of the rotating shaft in a sleeving mode, a control pull wire is arranged on the lower portion of the inner side of the control frame, and a pressure buffering protection assembly is arranged between the spinning handles and the control pull wire. The device is reasonable in design, simple in structure, convenient to machine, capable of effectively avoiding the situation that equipment is damaged due to over-stroke downward pressing of the spinning handle, safe, reliable, easy and convenient to operate and easy to maintain, and effectively meets use requirements.

Description

Technical Field

[0001] This utility model belongs to the field of driving machinery handle technology, and in particular relates to a pressure relief and protection device suitable for rotary handles. Background Technology

[0002] Mobile machinery refers to mechanical equipment capable of traveling on roads, primarily used for various engineering, agricultural, and transportation tasks. These machines typically have wheeled or tracked structures, enabling them to traverse diverse terrains and complete specific operational tasks. Common types of mobile machinery include tractors; agricultural machinery used for planting, harvesting, fertilizing, and irrigating, such as harvesters and seeders; and forestry machinery used in landscaping, such as weeders. These mobile machines play a vital role in various industries; for example, agricultural and forestry machinery directly impacts agricultural production and development, improving productivity and quality of life.

[0003] Spinning handles are commonly used in mobile machinery due to their ease of operation. However, because the control structure requires changes in stroke, the downward pressing angle of the spinning handle is not fixed. In actual operation, over-stroke pressing may occur, leading to deformation, breakage, and other damage to the handle and related components, affecting the normal operation of the equipment. Utility Model Content

[0004] This utility model addresses the technical problems existing in the use of the aforementioned spinning handle by proposing a pressure-relieving and protective device for spinning handles. This device is reasonably designed, simple in structure, easy to process, and can effectively prevent equipment damage caused by excessive pressure of the spinning handle. It is safe and reliable, easy to operate and maintain, and effectively meets the usage requirements.

[0005] To achieve the above objectives, the present invention provides a pressure-relieving and protective device for a rotary handle, comprising a control frame, a handrail on one side of the control frame, a rotary handle inside the control frame, the rotary handle including a bearing seat, a rotating shaft between the two bearing seats, the rotary handle being C-shaped and fitted onto both ends of the rotating shaft, a control cable being provided on the lower inner side of the control frame, and a pressure-relieving and protective component being provided between the rotary handle and the control cable.

[0006] Preferably, the pressure relief protection assembly includes a sensor frame sleeved on the outside of the rotating shaft, a locking pin provided at the connection between the sensor frame and the rotating shaft, a rod end joint bearing provided on one side of the sensor frame, a compression spring frame provided below the rod end joint bearing, and a fixing frame provided below the compression spring frame and connected to the end of the control cable.

[0007] Preferably, the compression spring frame includes limiting rods connected to the fixing frame, a first limiting plate is provided below the two limiting rods, a second limiting plate is provided above the two limiting rods, a locking nut is provided on the outer side of the upper end of the limiting rod to fasten the second limiting plate, a connecting rod is provided between the first limiting plate and the second limiting plate, a compression spring is sleeved on the outer side of the connecting rod, the upper end of the connecting rod is connected to the rod end joint bearing, and the lower end of the connecting rod passes through the first limiting plate.

[0008] Preferably, a connecting bolt is provided inside the rod end joint bearing and extends into the sensing frame. A spacer is sleeved on the outside of the connecting bolt located between the rod end joint bearing and the sensing frame, and a connecting nut is provided on one side of the sensing frame.

[0009] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0010] 1. This utility model provides a pressure-reducing and protective device for a rotary handle. Utilizing the established pressure-reducing and protective components, when the rotary handle is pressed down, force is first applied to the spring frame, driving the control cable. When the required tension (or pressure) for the flexible shaft on the control cable is reached, the flexible shaft activates the control device. When the flexible shaft reaches its travel limit, the handle continues to press down, moving towards the handrail until it touches the handrail on the control frame. The overtravel process is offset by the compression of the spring within the spring frame, thus ensuring the control cable reaches the required travel without damaging other components. This device is reasonably designed, simple in structure, easy to manufacture, and effectively prevents damage to the equipment caused by overtravel of the rotary handle. The device is safe and reliable, simple and convenient to operate and easy to maintain, effectively meeting usage requirements. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of a pressure relief and protection device suitable for a rotary handle;

[0013] Figure 2 An exploded view of the structure of a pressure relief and protection device suitable for a spinning handle;

[0014] In the above figures, 1. Control frame; 11. Handrail; 2. Rotary handle; 21. Bearing seat; 22. Rotating shaft; 3. Control cable; 4. Pressure relief and protection assembly; 41. Sensor frame; 411. Locking pin; 42. Rod end joint bearing; 43. Compression spring frame; 431. Limiting rod; 432. First limiting plate; 433. Second limiting plate; 434. Locking nut; 435. Connecting rod; 436. Compression spring; 44. Fixing frame; 5. Connecting bolt; 51. Spacer; 52. Connecting nut. Detailed Implementation

[0015] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0017] Examples, such as Figures 1-2As shown, a pressure-relieving and protective device suitable for a rotary handle 2 includes a control frame 1, with a handrail 11 on one side. The aforementioned structural components are all found in existing conventional motorized machinery and are readily known to those skilled in the art. Furthermore, a rotary handle 2 is housed within the control frame 1. The rotary handle 2 includes bearing seats 21, with a rotating shaft 22 positioned between the two bearing seats 21. The rotary handle 2 is C-shaped and fitted onto both ends of the rotating shaft 22. Connecting pins are provided at the connection points between the rotary handle 2 and the rotating shaft 22 to secure them together. When the rotary handle 2 is pressed down, it and the rotating shaft 22 rotate relative to the bearing seats 21, thereby acting on the subsequent pressure-relieving and protective assembly 4 to protect the device components. Further, a handrail 11 is provided on the lower inner side of the control frame 1. The control cable 3 is a common technology in conventional driving machinery. The flexible shaft in the cable can pull other equipment components of the driving machinery to control the operating status of the equipment. The specific working principle and operation mode will not be described in detail. A pressure relief and protection component 4 is set between the rotary handle 2 and the control cable 3. That is, when the rotary handle 2 is pressed down, the force is first applied to the spring frame 43, which drives the control cable 3 to move. When the tension (or pressure) required for the flexible shaft on the control cable 3 to move is reached, the flexible shaft moves to control the equipment. When the flexible shaft reaches its stroke, the handle continues to press down and moves towards the handrail 11 until it touches the handrail 11 on the control frame 1. The over-stroke process at this time is offset by the compression of the spring 436 in the spring frame 43, so that the control cable 3 reaches the required stroke without damaging other components.

[0018] In the above process: using the established pressure-reducing protective component 4, when the rotary handle 2 is pressed down, the force is first applied to the spring frame 43, which drives the control cable 3 to run. When the tension (or pressure) required for the flexible shaft on the control cable 3 to move is reached, the flexible shaft moves to control the equipment. When the flexible shaft reaches its stroke, the handle continues to press down, moving towards the handrail 11, until it touches the handrail 11 on the control frame 1. At this time, the overtravel process is offset by the compression of the spring 436 inside the spring frame 43, so that the control cable 3 reaches the required stroke without damaging other components. This device is reasonably designed, simple in structure, easy to process, and can effectively avoid equipment damage caused by the rotary handle 2 being pressed down too far. The equipment is safe and reliable, simple and convenient to operate and easy to maintain, and effectively meets the usage requirements.

[0019] To ensure the effective implementation of the pressure relief protection action, the pressure relief protection component 4 includes a sensor frame 41 sleeved on the outside of the rotating shaft 22. A locking pin 411 is provided at the connection between the sensor frame 41 and the rotating shaft 22 to secure the placement of the sensor frame 41, prevent it from shifting, and improve stability. A rod end joint bearing 42 is provided on one side of the sensor frame 41, a compression spring frame 43 is provided below the rod end joint bearing 42, and a fixing frame 44 is provided below the compression spring frame 43 and connected to the end of the control cable 3. Specifically, when rotating the pressure handle... When the hand 2 presses down, the established sensing frame 41 can rotate with the rotating handle 2 under the action of the rotating shaft 22, and act on the rod end joint bearing 42. When the rod end joint bearing 42 rotates relative to the sensing frame 41, it can act on the compression spring frame 43, thereby driving the control cable 3 to be pulled, thus realizing the control of external equipment. When the flexible shaft of the control cable 3 reaches its stroke, the structure inside the compression spring frame 43 is compressed to achieve the effect of unloading force, avoiding the possibility of damage to the control cable 3 due to overstroke, and meeting the usage requirements.

[0020] To ensure the smooth operation of the pressure relief protection function, the compression spring frame 43 includes limiting rods 431 connected to the fixed frame 44. A first limiting plate 432 is located below the two limiting rods 431, and a second limiting plate 433 is located above the two limiting rods 431. A locking nut 434 is located on the outer side of the upper end of the limiting rods 431 to secure the second limiting plate 433. A connecting rod 435 is provided between the first limiting plate 432 and the second limiting plate 433. A compression spring 436 is sleeved on the outer side of the connecting rod 435. The upper end is connected to the rod end joint bearing 42, and the lower end of the connecting rod 435 passes through the first limiting plate 432. Specifically, the locking nut 434 is used to limit the position of the second limiting plate 433, especially to ensure the smooth operation of the subsequent compression of the compression spring 436. In other words, the compression force of the compression spring 436 is greater than the pulling force of the control cable 3. That is to say, when the rotary handle 2 is pressed down and rotated, the compression spring frame 43 is relatively integrated and is first lifted up with the rotation of the rotary handle 2. The lower part of the fixed bracket 44 will also move upward and act on the control cable 3. That is, when the tension required for the flexible shaft to move on the control cable 3 is reached, the flexible shaft moves and controls the external device. When the flexible shaft reaches its stroke, the rotary handle 2 continues to press down until it touches the handrail 11. It should be noted that after the flexible shaft reaches its stroke, the distance between the rotary handle 2 and the handrail 11 will not be large. In other words, when the flexible shaft reaches its maximum stroke, due to the continuous downward pressing of the handle, the force increases. During this process, the control... The flexible shaft of the pull cable 3 remains under control and will not exceed the maximum tensile force of the flexible shaft in the control pull cable 3. The overtravel force will be offset by the first limiting plate 432 driven by the connecting rod 435 to compress the compression spring 436. The above process not only allows the control pull cable 3 to reach the required travel, and the rotary handle 2 is close to the handrail 11 for convenient control of the mechanical equipment, but also offsets the overtravel force to a certain extent without damaging other components, greatly improving the safety of the device and meeting the usage requirements.

[0021] To further improve the rationality of the device setup and ensure the stability of the connections between equipment components, a connecting bolt 5 is provided inside the rod end spherical bearing 42 and extends into the sensing frame 41. A spacer 51 is sleeved on the outside of the connecting bolt 5 located between the rod end spherical bearing 42 and the sensing frame 41. A connecting nut 52 is provided on one side of the sensing frame 41. Specifically, the connecting bolt 5 connects the rod end spherical bearing 42 to the sensing frame 41, ensuring that when the rotating shaft 22 rotates, the force can be applied to the rod end spherical bearing 42. Of course, the connecting bolt 5 and the rod end spherical bearing 42 are movably connected to avoid motion interference and meet the usage requirements.

[0022] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A pressure-relieving and protective device suitable for a rotary handle, comprising a control frame, wherein a handrail is provided on one side of the control frame, characterized in that, The control frame is equipped with a rotary handle, which includes a bearing seat. A rotating shaft is provided between the two bearing seats. The rotary handle is C-shaped and is sleeved on both ends of the rotating shaft. A control cable is provided on the lower inner side of the control frame. A pressure relief and protection component is provided between the rotary handle and the control cable.

2. The pressure-relieving and protective device for a rotary handle according to claim 1, characterized in that, The pressure relief and protection assembly includes a sensor frame sleeved on the outside of the rotating shaft, a locking pin at the connection between the sensor frame and the rotating shaft, a rod end joint bearing on one side of the sensor frame, a compression spring frame below the rod end joint bearing, and a fixing frame below the compression spring frame, which is connected to the end of the control cable.

3. A pressure-relieving and protective device for a rotary handle according to claim 2, characterized in that, The compression spring frame includes limiting rods connected to a fixed frame. A first limiting plate is provided below the two limiting rods, and a second limiting plate is provided above the two limiting rods. A locking nut is provided on the outer side of the upper end of the limiting rod to fasten the second limiting plate. A connecting rod is provided between the first limiting plate and the second limiting plate. A compression spring is sleeved on the outer side of the connecting rod. The upper end of the connecting rod is connected to a rod end joint bearing, and the lower end of the connecting rod passes through the first limiting plate.

4. A pressure-relieving and protective device for a rotary handle according to claim 3, characterized in that, A connecting bolt is provided inside the rod end spherical bearing and extends into the sensing frame. A spacer is sleeved on the outside of the connecting bolt located between the rod end spherical bearing and the sensing frame. A connecting nut is provided on one side of the sensing frame.

Images