Safety guardrail for sliding cab
By designing a sliding cab safety guardrail with a single cantilever structure, using the engagement limit mechanism of the flip rail and the spring, the problems of complex guardrail structure and large space in the existing technology are solved, and higher safety and reliability are achieved , and reduces maintenance costs.
Patent Information
- Application Number
- CN202420076801.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-12
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-01-12
AI Technical Summary
The safety guardrails of existing skid loaders have complex structures, large space occupancy, high failure rate, high manufacturing cost, and inconvenient operation.
A single cantilever structure sliding cab safety guardrail is designed, using a flip rail, base welding assembly, slider, spring, guide sleeve, barrier cover and proximity switch device, and the engagement of the slider and the slide sleeve is pressed through spring. The limit achieves 90° flip of the flip bar, combining the mechanical rotary limit mechanism to improve safety and reliability, and reduces maintenance costs through simple assembly design.
The sliding cab safety guardrail with simple structure, small space, high safety and high reliability is achieved, reducing maintenance costs, and improving maintenance ability by replacing parts separately.
Smart Images
Figure CN222332841U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a sliding cab safety guardrail and belongs to the technical field of engineering machinery. Background Art
[0002] The skid steer loader has a small overall size and can be turned on the spot, which makes it particularly suitable for operations in narrow spaces such as urban infrastructure, factories, livestock houses, and docks. The operation of a skid steer loader is different from that of other loaders. It has no steering wheel and is operated by only two operating handles. In order to ensure the safety of the driver and improve the comfort of operation, safety guardrails are generally installed. The most common safety guardrails at present are U-shaped forward-flip structures, which are large in size, with complex rotation, limit, and reset mechanisms, high manufacturing costs, high failure rates, and occupy a large space in the cab. Utility Model Content
[0003] The utility model aims to overcome the deficiencies in the prior art and to provide a safety guardrail for a sliding cab, which has a simple structure, is stable and reliable, is easy to operate, has a beautiful appearance and occupies little space.
[0004] In order to achieve the above purpose, the utility model is implemented by adopting the following technical solutions:
[0005] In the first aspect, the utility model provides a sliding cab safety guardrail, comprising: a flip bar, a base welding assembly, a slider, a spring, a guide sleeve, a baffle cover, and a proximity switch device; the base welding assembly is connected to the bottom plate of the cab, the flip bar is rotatably arranged on the top of the base welding assembly, the slider and the guide sleeve are respectively installed in the opposite side openings of the rectangular tube on the base welding assembly, the spring is installed between the slider and the guide sleeve, the shaft on the flip bar passes through the slider, the spring, and the guide sleeve in sequence and is fixed to the base welding assembly, and the slider is meshed with the sliding sleeve fixed on the shaft, the proximity switch device is fixed to the base welding assembly, the baffle cover is fixed to the base welding assembly by bolts, the flip bar has two states of flat and raised, and the proximity switch device controls the movement of the entire skid loader by sensing the flat and raised states of the flip bar.
[0006] Furthermore, the flip fence includes an axis, a sleeve, a limit block, a sensor plate, a frame, and a sheath. The frame is a bent round tube with two sections. The axis and the sleeve are welded into a small component, and the small component is welded to the end face of the frame. The limit block is welded to the sleeve, and the limit block is a semicircular ring. The sensor plate is welded to the frame, and the sheath covers the frame.
[0007] Furthermore, the shaft is configured as a stepped shaft, which is larger in the middle and smaller at both ends, with the small end at one end configured as a thread and the small end at the other end configured as a hexagonal prism; the shaft is fixed to the base welding assembly by installing a washer and a locking nut at one end of the thread.
[0008] Furthermore, the sleeve is configured to be cylindrical, with one end face being a plane and the other end face being provided with four evenly distributed protruding teeth and grooves, with a 135° inclined transition between the protruding teeth and the grooves, and a hexagonal hole matching the shaft being provided at the center of the sleeve.
[0009] Furthermore, the sheath is a circle of foamed parts wrapped around the frame.
[0010] Furthermore, the base welding assembly includes a vertical pipe, a second limit block, a mounting seat, a proximity switch mounting plate and a bottom plate. Two threaded holes are provided on one side of the vertical pipe, and the other two opposite sides are provided with special-shaped holes with straight lines on the top and bottom and arcs on the left and right, which are used for installing the slider and the guide sleeve and preventing rotation; the second limit block is a quarter-circular ring, welded to the lower part of the special-shaped hole of the vertical pipe and concentric with it, and the second limit block cooperates with the first limit block; the mounting seat is a threaded column welded on the opposite side of the threaded hole of the vertical pipe; the proximity switch mounting plate is an L-shaped plate with a circular hole; and a mounting hole is opened on the bottom plate for connecting with the bottom plate of the cab.
[0011] Furthermore, the slider is cylindrical, one end face is a plane, and the other end face is provided with four evenly distributed protrusions and grooves, and there is a 135° inclined transition between the protrusions and the grooves. At the same time, two upper and lower steps matching the special-shaped holes on the riser are provided to prevent the slider from falling out of the base welding assembly when moving horizontally while preventing rotation.
[0012] Furthermore, the guide sleeve is configured to be cylindrical, and is provided with two upper and lower steps matching the special-shaped holes on the riser, so as to adjust the compression amount of the spring and fix the flip bar to the base welding assembly.
[0013] Furthermore, the blocking cover is made of reinforced nylon, and a slot matching the base welding assembly is provided on the inner side of the blocking cover.
[0014] Furthermore, the flip bar can be laid flat or raised, and the flip angle is 90°. When the flip bar is laid flat or raised, the second limit block and the first limit block are in contact with each other.
[0015] Compared with the prior art, the utility model has the following beneficial effects:
[0016] 1. The safety guardrail is a single cantilever structure connected to the bottom plate of the cab, with a simple structure and small space occupation;
[0017] 2. The safety guardrail uses a spring to compress the slider and the mutually meshing convex groove on the sliding sleeve to limit the flip bar to keep it horizontal or raised; apply force to compress the spring on the flip bar to make the slider move horizontally, and the flip bar can be flipped 90 degrees; at the same time, the semi-circular ring-shaped limit block and the quarter-circular ring-shaped limit block cooperate for secondary limit. The mechanical rotation limit mechanism and secondary limit can prevent accidental touch and collision, and have higher safety and reliability.
[0018] 3. The slider, spring, guide sleeve, flip bar, etc. are all assembly parts and are easy to install. If some parts are damaged or fail, they can be replaced with spare parts separately, which has good maintainability and low maintenance cost.
[0019] 4. The basic framework of the safety bar is composed of round tubes and rectangular tubes, which have high strength and good stability. It can provide more stable support for the cab crew and has high safety.
[0020] 5. The cover of the safety guardrail can serve as an armrest and can also shield the rotation limit mechanism and the safety guardrail proximity switch device. It has a simple structure and beautiful appearance. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the explosion and decomposition of the safety guardrail.
[0022] Figure 2 , Figure 3 It is a schematic diagram of the components of the safety guardrail.
[0023] Figure 4 is a schematic diagram of the flip bar component.
[0024] Figure 5 This is a schematic diagram of the base welding assembly.
[0025] Figure 6 is a schematic diagram of a slider.
[0026] Figure 7 It is a schematic diagram of the guide sleeve.
[0027] Figure 8 , Fig. 9 This is a diagram of the flip bar in a flat position (with the cover hidden).
[0028] Fig.10 , Fig.11 This is a schematic diagram of the flip bar raised state (hidden cover).
[0029] In the figure: 1. flip bar; 2. base welding assembly; 3. slider; 4. spring; 5. guide sleeve; 6. washer; 7. locking nut; 8. cover; 9. proximity switch device; 10. bolt; 11. shaft; 12. sleeve; 13. limit block 1; 14. sensor plate; 15. frame; 16. sheath; 17. riser; 18. limit block 2; 19. mounting seat; 20. proximity switch mounting plate; 21. bottom plate. DETAILED DESCRIPTION
[0030] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.
[0031] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.
[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.
[0033] Example 1
[0034] like Figure 1 , Figure 2 , Figure 3As shown, this embodiment introduces a safety guardrail for a sliding cab, comprising: a flip bar 1, a base welding assembly 2, a slider 3, a spring 4, a guide sleeve 5, a washer 6, a locking nut 7, a cover 8, a proximity switch device 9 and a bolt 10. The slider 3 and the guide sleeve 5 are respectively installed in the openings on the opposite sides of the rectangular tube on the base welding assembly 2, and the spring 4 is installed between the slider 3 and the guide sleeve 5. The shaft on the flip bar 1 passes through the slider 3, the spring 4, and the guide sleeve 5 in sequence, and is fixed to the base welding assembly 2 with a washer 6 and a locking nut 7. The safety bar proximity switch device 9 is fixed to the base welding assembly 2. The cover 8 is fixed to the base welding assembly 2 by bolts 10. The base welding assembly 2 is connected to the bottom plate of the cab. The flip bar 1 has two states: raised and flat. The safety bar proximity switch device 9 controls the movement of the entire skid loader by sensing the raised and flat states of the safety bar.
[0035] like Figure 4 The flip fence 1 shown is composed of a shaft 11, a sleeve 12, a stopper 13, a sensor plate 14, a frame 15, and a sheath 16. The shaft 11 and the sleeve 12 are welded into a small assembly, which is then welded to the end face of the frame 15. The stopper 13 is welded to the sleeve 12, the sensor plate 14 is welded to the frame 15, and the sheath 16 is coated on the frame 15. The shaft 11 is set as a stepped shaft, which is large in the middle and small at both ends. The small head at one end is set as a thread for installing a washer and a locking nut, and the small head at the other end is set as a hexagonal prism; the frame 15 is a round tube with two sections of bending; the sleeve 12 is set as a cylinder, one end face is a plane, and the other end face is provided with 4 evenly distributed protruding teeth and grooves, and the protruding teeth and the grooves are transitioned with a 135° inclined plane. The center of the sleeve is provided with a hexagonal hole matching the shaft 11; the stopper 13 is a semicircular ring; the sheath 16 is a layer of foamed parts coated outside the frame 15.
[0036] like Figure 5 The base welding assembly 2 shown is welded by a vertical pipe 17, a second stopper 18, a mounting seat 19, a proximity switch mounting plate 20 and a bottom plate 21. Two threaded holes are provided on one side of the vertical pipe 17, and the other two opposite sides are provided with special-shaped holes with straight lines on the top and bottom and arcs on the left and right, which are convenient for the installation of the slider 3 and the guide sleeve 5 and prevent rotation; the second stopper 18 is a quarter-circular ring, welded to the lower part of the special-shaped hole of the vertical pipe 17 and concentric with it, and the second stopper 18 and the first stopper 13 cooperate with each other; the mounting seat 19 is a threaded column welded on the opposite side of the threaded hole of the vertical pipe 17; the proximity switch mounting plate 20 is an L-shaped plate with a circular hole on one side; the bottom plate 21 is provided with a mounting hole for connecting with the bottom plate of the cab.
[0037] like Figure 6As shown, the slider 3 is similar in structure to the sleeve 12, which is cylindrical, with one end face being a plane and the other end face being provided with four evenly distributed protruding teeth and grooves, with a 135° inclined transition between the protruding teeth and the grooves, and two upper and lower steps matching the special-shaped holes on the riser 17 are provided to prevent the slider 3 from falling out of the base welding assembly during rotation and horizontal movement, and the slider 3 and the sleeve 12 are meshed with each other.
[0038] like Figure 7 As shown, the guide sleeve 5 is set to be cylindrical, and two upper and lower steps matching the special-shaped holes on the vertical pipe 17 are set on it, which can adjust the compression amount of the spring 4 and fix the flip bar 1 to the base welding assembly 2.
[0039] like Figure 8 , Fig. 9 , Fig.10 , Fig.11 As shown, the flip fence 1 can be laid flat or raised, and the flip angle is 90°, and both states can effectively limit the position. When the flip fence 1 is in the flat or raised state, the spring 4 provides a sufficiently large force to press the slider 3, so that the protruding teeth and grooves on the sliding sleeve 12 and the slider 3 are meshed with each other, and the limit block 1 13 contacts the limit block 2 18 to achieve effective limit. In the process of laying the flip fence 1 flat and raising it, the operator applies force on the flip fence 1, the flip fence 1 rotates and squeezes the slider 3 and the spring 4, the spring 4 is compressed, the slider 3 moves horizontally toward the inside of the vertical pipe 17, the protruding teeth on the sliding sleeve 12 turn to the next groove on the slider 3, and the limit block 1 13 collides with the limit block 2 18, preventing the flip fence 1 from continuing to rotate, ensuring that the flip angle of the flip fence 1 is 90°.
[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A sliding cab safety guardrail, characterized in that: The invention comprises a flip bar (1), a base welding assembly (2), a slider (3), a spring (4), a guide sleeve (5), a blocking cover (8), and a proximity switch device (9); the base welding assembly (2) is connected to the bottom plate of the cab, the flip bar (1) is rotatably arranged on the top of the base welding assembly (2), the slider (3) and the guide sleeve (5) are respectively installed in the openings on the opposite sides of the rectangular tube on the base welding assembly (2), the spring (4) is installed between the slider (3) and the guide sleeve (5), and the shaft (11) on the flip bar (1) is passed through the slider (3) and the guide sleeve (5) in sequence. The slider (3), the spring (4) and the guide sleeve (5) are fixed on the base welding assembly (2), and the slider (3) is meshed with the sliding sleeve (12) fixed on the shaft (11). The proximity switch device (9) is fixed on the base welding assembly (2), and the blocking cover (8) is fixed on the base welding assembly (2) by bolts (10). The flip bar (1) has two states: flat and raised. The proximity switch device (9) controls the movement of the entire skid loader by sensing the flat and raised states of the flip bar (1).
2. The sliding cab safety guardrail according to claim 1 is characterized in that: The flip fence (1) comprises a shaft (11), a sliding sleeve (12), a limit block (13), a sensing plate (14), a frame (15), and a protective sleeve (16); the frame (15) is a round tube with two sections of bending; the shaft (11) and the sliding sleeve (12) are welded into a small component, and the small component is further welded to the end surface of the frame (15); the limit block (13) is welded to the sliding sleeve (12); the limit block (13) is a semicircular ring; the sensing plate (14) is welded to the frame (15); and the protective sleeve (16) covers the frame (15).
3. The sliding cab safety guardrail according to claim 2 is characterized in that: The shaft (11) is configured as a stepped shaft (11), which is larger in the middle and smaller at both ends, with a small end at one end configured as a thread and a small end at the other end configured as a hexagonal prism; the shaft (11) is fixed to the base welding assembly (2) by installing a washer (6) and a locking nut (7) at one end of the thread.
4. The sliding cab safety guardrail according to claim 2 is characterized in that: The sliding sleeve (12) is arranged in a cylindrical shape, one end face is a plane, and the other end face is provided with four evenly distributed protruding teeth and grooves, and there is a 135° inclined transition between the protruding teeth and the grooves. The center of the sliding sleeve (12) is provided with a hexagonal hole matching the shaft (11).
5. The sliding cab safety guardrail according to claim 2 is characterized in that: The protective sleeve (16) is a circle of foamed parts covering the outside of the frame (15).
6. The sliding cab safety guardrail according to claim 1, characterized in that: The base welding assembly (2) comprises a vertical pipe (17), a second limit block (18), a mounting seat (19), a proximity switch mounting plate (20) and a bottom plate (21). Two threaded holes are arranged on one side of the vertical pipe (17), and the other two opposite sides are provided with special-shaped holes which are straight lines in the upper and lower parts and arcs in the left and right parts, which are used for mounting and preventing the slider (3) and the guide sleeve (5); the second limit block (18) is a quarter-circular ring, which is welded to the lower part of the special-shaped hole of the vertical pipe (17) and is concentric therewith, and the second limit block (18) and the first limit block (13) cooperate with each other; the mounting seat (19) is a threaded column welded to the opposite side of the threaded hole of the vertical pipe (17); the proximity switch mounting plate (20) is an L-shaped plate with a circular hole; and the bottom plate (21) is provided with a mounting hole for connecting with the bottom plate of the cab.
7. The sliding cab safety guardrail according to claim 1, characterized in that: The slider (3) is cylindrical, one end face is a plane, and the other end face is provided with four evenly distributed protruding teeth and grooves, with a 135° inclined transition between the protruding teeth and the grooves. At the same time, two upper and lower steps matching the special-shaped holes on the vertical pipe (17) are provided to prevent the slider (3) from falling out of the base welding assembly (2) when it moves horizontally while preventing rotation.
8. The sliding cab safety guardrail according to claim 1, characterized in that: The guide sleeve (5) is arranged in a cylindrical shape and is provided with two upper and lower steps matching the special-shaped holes on the vertical pipe (17) for adjusting the compression amount of the spring (4) and fixing the flip bar (1) on the base welding assembly (2).
9. The sliding cab safety guardrail according to claim 1, characterized in that: The blocking cover (8) is made of reinforced nylon, and a slot matching the base welding assembly (2) is provided on the inner side of the blocking cover (8).
10. The sliding cab safety guardrail according to claim 6, characterized in that: The flip bar (1) can be laid flat or lifted up, and the flip angle is 90°. When the flip bar (1) is laid flat or lifted up, the second limit block (18) and the first limit block (13) are in contact with each other.