Work assembly lifting adjustment mechanism

Abstract

The utility model provides a kind of working assembly lifting adjusting mechanism, it is related to municipal machinery field, including control lever, connecting rod, control lever is hingedly connected with rack, control lever is movably connected with connecting rod, connecting rod is connected with walking wheel by front wheel frame and rear wheel frame;Front wheel frame and rear wheel frame are all including adjusting plate, connecting plate and connecting piece, adjusting plate and connecting plate are connected by connecting piece;The outside of adjusting plate and connecting plate is respectively connected with walking wheel rotation, connecting rod is hingedly connected with adjusting plate, rack is rotatably connected with adjusting plate by connecting piece;The connecting line between the three connecting points of adjusting plate respectively corresponding connecting rod, walking wheel and connecting piece is triangle, connecting rod can drive adjusting plate to rotate around connecting piece under the drive of control lever, to adjust the height of rack relative to walking wheel;The utility model can realize the quick lifting of working assembly by pushing and pulling control lever when needing equipment to change scene, to facilitate the quick change scene of complete machine equipment.

Description

Technical Field

[0001] This utility model relates to the field of municipal machinery technology, specifically to a lifting and adjusting mechanism for a working component. Background Technology

[0002] In the field of municipal machinery, the working components are usually carried by a vehicle frame. For example, road sweeping machinery mainly consists of a vehicle frame, wheels, and a working component, a roller-type sweeping brush. The sweeping brush is connected to the vehicle frame through a corresponding structure and is designed to be height-adjustable. When the road needs to be swept, the sweeping brush is lowered to its bottom to contact the ground. When the sweeper needs to move to another location, that is, when the sweeper is only traveling on the road and not sweeping, the sweeping brush is raised to lift off the ground to avoid unnecessary wear caused by the sweeping brush contacting the ground during the move.

[0003] In the prior art, such as the patent document with announcement number CN4120663A, an automatic sweeping height adjustment device for a sweeper is disclosed. The device uses a hydraulic cylinder to drive a cantilever, which in turn drives the housing carrying the sweeping brush to move up or down, thereby adjusting the sweeping height of the sweeper.

[0004] Based on this, this application aims to propose a novel working component lifting and adjusting mechanism to facilitate the rapid relocation of work vehicles. Utility Model Content

[0005] This utility model provides a lifting and adjusting mechanism for working components to address the aforementioned problems existing in the prior art.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A lifting and adjusting mechanism for a working component is connected to a frame carrying a working component. The frame is connected to a traveling wheel, which includes a front wheel and a rear wheel. The two front wheels are connected to each other through a front wheel frame, and the two rear wheels are connected to each other through a rear wheel frame. The mechanism is characterized by including a control lever and a connecting rod. The control lever is hinged to the frame, and the control lever is movably connected to the connecting rod. The connecting rod is connected to the traveling wheel through the front wheel frame and the rear wheel frame.

[0007] Both the front wheel frame and the rear wheel frame include an adjusting plate, a connecting plate, and a connecting piece. The adjusting plate and the connecting plate are connected to each other through the connecting piece. The outer sides of the adjusting plate and the connecting plate are rotatably connected to the walking wheels, the connecting rod is hinged to the adjusting plate, and the frame is rotatably connected to the adjusting plate through the connecting piece. The frame and the connecting piece are relatively fixed in the vertical direction.

[0008] The lines connecting the three connection points of the adjustment plate to the connecting rod, the traveling wheel and the connecting piece form a triangle. The connecting rod can drive the adjustment plate to rotate around the connecting piece under the drive of the control lever, so as to adjust the height of the frame relative to the traveling wheel. The control lever is also connected to a first limiting member to limit its rotation relative to the frame.

[0009] Furthermore, the control lever is hinged to a hinged base fixed on the frame.

[0010] Furthermore, the first limiting member is a fastener fixed to the control lever, and the hinge seat is provided with a slot for securing the fastener.

[0011] Furthermore, the fastener protrudes outward from the outer wall of the control lever and is slidably connected to the control lever. Inside the control lever, on the lower side of the fastener, there is an elastic element for driving the fastener toward the slot. The fastener is fixedly connected to a push rod, which is axially located inside the control lever and has its end protruding outward from the control lever.

[0012] Furthermore, the lifting and adjusting mechanism of the working component also includes a fine-tuning mechanism connected between the control lever and the connecting rod. The fine-tuning mechanism includes an adjusting rod, an adjusting rod support sleeve sleeved outside the adjusting rod, and an inner threaded sleeve sleeved outside the adjusting rod. The adjusting rod is movably connected to the control lever through the adjusting rod support sleeve, and the adjusting rod is movably connected to the connecting rod through the inner threaded sleeve, which is used to drive the connecting rod to move when the adjusting rod rotates.

[0013] Furthermore, the adjusting rod support sleeve is hinged to the control rod externally, and rotatably connected to the adjusting rod internally, with the adjusting rod support sleeve and the adjusting rod being relatively fixed in the axial direction of the adjusting rod; the adjusting rod is also connected to a second limiting member for restricting its rotation relative to the adjusting rod support sleeve.

[0014] Furthermore, the second limiting member is an anti-rotation pin that penetrates the side wall of the adjusting rod support sleeve and whose end tends toward the adjusting rod. The outer wall of the adjusting rod is provided with an anti-rotation groove that matches the anti-rotation pin along its circumference. The pin of the anti-rotation pin is connected to an elastic member for driving its inner end toward the anti-rotation groove.

[0015] Furthermore, the adjusting rod is threadedly connected to the inner threaded sleeve, and the inner threaded sleeve is hinged to the connecting rod.

[0016] Furthermore, a handwheel is connected to the top of the adjusting rod for controlling the rotation of the adjusting rod.

[0017] The beneficial effects of this utility model are:

[0018] 1. This utility model, through the setting of control levers, connecting rods and their connection relationship with the front wheel frame, rear wheel frame, traveling wheels and frame, can realize the rapid lifting of working components by pushing and pulling control levers when equipment needs to be moved, so as to facilitate the rapid relocation of the whole machine.

[0019] 2. This utility model further improves upon the fine-tuning mechanism, which consists of an adjusting rod, an adjusting rod support sleeve, and an inner threaded sleeve. In particular, the connection relationship between each component of the fine-tuning mechanism and the connecting rod and control rod enables precise control of the adjustment height of the sweeping brush by rotating the adjusting rod, thus meeting the dual requirements of the equipment for rapid site transfer and height fine-tuning. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a lifting and adjusting mechanism according to an embodiment of the present invention;

[0021] Figure 2 This is a three-dimensional structural schematic diagram of a lifting and adjusting mechanism according to an embodiment of the present invention;

[0022] Figure 3 This is a partial cross-sectional structural schematic diagram of an embodiment of the present invention;

[0023] Figure 4 This is a partial cross-sectional view of another embodiment of the present invention;

[0024] Figure 5 Based on Figure 1 The diagram shows the structure of the sweeper with the lifting and adjusting mechanism shown.

[0025] Figure 6 yes Figure 5 A side view of the sweeper shown.

[0026] In the diagram: 1. Control lever, 2. Linkage rod, 3. Front wheel frame, 4. Rear wheel frame, 31. Adjusting plate, 32. Connecting plate, 5. Adjusting rod, 6. Handwheel, 7. Adjusting rod, 71. Anti-rotation groove, 8. Adjusting rod support sleeve, 9. Inner threaded sleeve, 10. Connector, 11. Frame, 12. Front wheel, 13. Rear wheel, 14. Axle, 15. Sweeping brush assembly, 16. Hinge seat, 160. Slot, 17. Fastener, 18. Elastic element, 19. Push rod, 20. Anti-rotation pin, 21. Spring. Detailed Implementation

[0027] The principles and features of this utility model are described below. The embodiments given are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0028] See attached Figure 1As shown, this embodiment provides a lifting and adjusting mechanism for a working component, which is connected to a frame 11 carrying the working component in the use state. The frame 11 is connected to traveling wheels, namely front wheels 12 and rear wheels 13. The two front wheels 12 are connected to each other through a front wheel frame 3, and the two rear wheels are connected to each other through a rear wheel frame 4. The lifting and adjusting mechanism for the working component includes a control lever 1 and a connecting rod 2. The control lever 1 is hinged to a hinge seat 16 fixed on the frame 11. The connecting rod 2 is movably connected to the control lever 1. The connecting rod 2 is connected to the front wheels 12 and the rear wheels 13 through the front wheel frame 3 and the rear wheel frame 4, respectively.

[0029] Both the front wheel frame 3 and the rear wheel frame 4 include an adjusting plate 31, a connecting plate 32, and a connecting member 10. The adjusting plate 31 and the connecting plate 32 are connected by the connecting member 10. In this embodiment, the connecting member 10 is a rod structure. The outer sides of the adjusting plate 31 and the connecting plate 32 of the front wheel frame 3 are rotatably connected to the two front wheels 12 through the wheel axle 14, and the outer sides of the adjusting plate 31 and the connecting plate 32 of the rear wheel frame 4 are rotatably connected to the two rear wheels 13 through the wheel axle 14. The connecting rod 2 is hinged to the two adjusting plates 31. The frame 11 is rotatably connected to the adjusting plate 31 through the connecting member 10, and the frame 11 and the connecting member 10 are relatively fixed in the vertical direction.

[0030] In this embodiment, the adjustment plate 31 is configured as a crank arm structure. The lines connecting the three connection points of the adjustment plate 31 to the connecting rod 2, the traveling wheel and the connecting member 10 form a triangle. Under the drive of the control lever 1, the connecting rod 2 can drive the two adjustment plates 31 to rotate around the connecting member 10 to adjust the height of the frame 11 relative to the traveling wheel. The control lever 1 is also connected to a first limiting member for limiting its rotation relative to the frame 11.

[0031] The following example uses a sweeper employing the aforementioned lifting and adjusting mechanism. Figure 5 and Figure 6 As shown, the working component is a sweeping brush assembly 15. The outer shell of the sweeping brush assembly 15 is fixedly connected to the frame 11. The frame 11 is connected to the traveling wheels via a lifting and adjusting mechanism, which is used to adjust the height of the sweeping brush assembly 15 relative to the traveling wheels (i.e., relative to the ground). The lifting and lowering are controlled by the control lever 1. When passing through a section of road that does not need to be swept or when a relocation is required, pushing the control lever 1 forward moves the connecting rod 2 forward, thereby causing the two adjusting plates 31 to rotate around the axes of the two connecting members 10. Since the traveling wheels are always in contact with the ground, during the above rotation, the connecting members 10, the frame 11, and the sweeping brush assembly 15 are lifted as a whole, and the sweeping brush is lifted off the ground for quick relocation. Conversely, when it is necessary to lower the sweeping brush, the control lever 1 is operated in the opposite direction to adjust the sweeping brush to fall with the frame 11 until the brush bristles contact the ground for sweeping. The lifting and adjusting mechanism of this embodiment facilitates the rapid lifting of the working component, making it convenient for the rapid relocation of the entire machine.

[0032] In one embodiment of this utility model, the first limiting member is a fastener 17 fixed on the control lever 1. The hinge seat 16 is provided with a slot 160 for fastening the fastener 17. Different slots 160 can be set according to specific adjustment requirements, and the slots 160 of different positions are arranged along the rotation direction of the control lever 1 around its rotation with the hinge seat 16. Specifically, the fastener 17 is a block structure, which protrudes outward from the outer wall of the control lever 1 and is slidably connected to the control lever 1. Inside the control lever 1, on the lower side of the fastener 17, is an elastic element 18 for driving the fastener 17 toward the slot. The elastic element 18 can specifically be a spring structure. The fastener 17 is fixedly connected to a push rod 19, which is axially arranged inside the control lever 1 and has its end protruding outward from the control lever 1. In its natural state, the locking element 17 is engaged in the slot 160 by the force of the spring, restricting the rotation of the control lever 1. When it is necessary to operate the control lever to rotate around the hinge seat 16, the push rod 19 is pressed down to make the locking element 17 disengage from the slot 160.

[0033] Based on the above embodiments, in a preferred embodiment of this utility model, in order to accurately control the adjustment height of the working component during the lowering process, the working component lifting and adjusting mechanism further includes a fine-tuning mechanism connected between the control lever 1 and the connecting rod 2. The fine-tuning mechanism includes an adjusting rod 7, an adjusting rod support sleeve 8 sleeved outside the adjusting rod 7, and an inner threaded sleeve 9 sleeved outside the adjusting rod 7. The adjusting rod 7 is movably connected to the control lever 1 through the adjusting rod support sleeve 8, and the adjusting rod 7 is movably connected to the connecting rod 2 through the inner threaded sleeve 9, which is used to drive the connecting rod 2 to move when the adjusting rod 7 rotates. A handwheel 6 is connected to the top of the adjusting rod 7 for controlling the rotation of the adjusting rod 7. Specifically, the adjusting rod support sleeve 8 is hinged to the control lever 1 externally, and rotatably connected to the adjusting rod 7 internally. The adjusting rod support sleeve 8 and the adjusting rod 7 are relatively fixed in the axial direction of the adjusting rod 7. The adjusting rod 7 is threadedly connected to the inner threaded sleeve 9, and the inner threaded sleeve 9 is hinged to the connecting rod 2. The adjusting rod 7 is also connected to a second limiting member for limiting its rotation relative to the adjusting rod support sleeve 8.

[0034] In use, firstly, use the control lever 1 to lower the working components, such as the sweeping brush assembly 15, to the preset height. Then, for fine-tuning of the sweeping brush assembly, rotate the handwheel 6 to rotate the adjusting rod 7 relative to the adjusting rod support sleeve 8. The adjusting rod 7 generates linear movement relative to the inner threaded sleeve 9, which in turn drives the connecting rod 2 to move. The connecting rod 2 drives the two adjusting plates 31 to rotate around the axes of the two connecting parts 10 respectively. Since the traveling wheels are always in contact with the ground, during the fine-tuning process, the connecting part 10, the machine frame 11, and the sweeping brush assembly 15 all descend as a whole until the desired sweeping brush height is reached. This method of fine-tuning the sweeping brush assembly using the adjusting lever 7 and handwheel 6 allows for precise control of the sweeping brush's height adjustment, and also enables rapid relocation of the entire machine by quickly raising the sweeping brush assembly.

[0035] In one embodiment of this utility model, the second limiting member is an anti-rotation pin 20 that penetrates the side wall of the adjusting rod support sleeve 8 and whose end tends toward the adjusting rod 7. The outer wall of the adjusting rod 7 is provided with an anti-rotation groove 71 that is adapted to the anti-rotation pin 20 along its circumference. The pin of the anti-rotation pin 20 is connected to an elastic element for driving its inner end toward the anti-rotation groove 71. Specifically, a spring structure can be adopted. By moving the pin of the anti-rotation pin 20 outward, the restriction on the adjusting rod 7 can be released. After the height of the cleaning brush assembly 15 is adjusted, the position of the adjusting rod 7 can be fixed by moving the pin of the anti-rotation pin 20 inward through the elastic element into the anti-rotation groove 71.

Claims

1. A work assembly lifting adjustment mechanism, which is connected to a frame (11) carrying a work assembly, the frame (11) being connected with travelling wheels, the travelling wheels including front wheels (12) and rear wheels (13), the two front wheels (12) being connected by a front wheel frame (3) and the two rear wheels being connected by a rear wheel frame (4), characterized in that, Includes a control lever (1) and a connecting rod (2). The control lever (1) is hinged to the frame (11). The control lever (1) and the connecting rod (2) are movably connected. The connecting rod (2) is connected to the walking wheel through the front wheel frame (3) and the rear wheel frame (4). Both the front wheel frame and the rear wheel frame include an adjusting plate (31), a connecting plate (32), and a connecting piece (10). The adjusting plate (31) and the connecting plate (32) are connected to each other through the connecting piece (10). The outer sides of the adjusting plate (31) and the connecting plate (32) are rotatably connected to the walking wheels. The connecting rod (2) is hinged to the adjusting plate (31). The frame (11) is rotatably connected to the adjusting plate (31) through the connecting piece (10), and the frame (11) and the connecting piece (10) are relatively fixed in the vertical direction. The adjustment plate (31) is connected to the three connection points of the connecting rod (2), the traveling wheel and the connecting piece (10) in a triangle. The connecting rod (2) can drive the adjustment plate (31) to rotate around the connecting piece (10) under the drive of the control lever (1) to adjust the height of the frame (11) relative to the traveling wheel. The control lever (1) is also connected to a first limiting member for limiting its rotation relative to the frame (11).

2. The work assembly lift adjustment mechanism of claim 1, wherein, The control lever (1) is hinged to the hinge seat (16) fixed on the frame (11).

3. The work assembly lift adjustment mechanism of claim 2, wherein, The first limiting member is a fastener (17) fixed on the control lever (1), and the hinge seat (16) is provided with a slot (160) for fastening the fastener (17).

4. The work assembly lift adjustment mechanism of claim 3, wherein, The fastener (17) protrudes outward from the outer wall of the control lever (1) and is slidably connected to the control lever (1). Inside the control lever (1) and on the lower side of the fastener (17), there is an elastic element (18) for driving the fastener (17) toward the slot (160). The fastener (17) is fixedly connected to a push rod (19). The push rod (19) is axially located inside the control lever (1) and its end protrudes outward from the control lever (1).

5. The work assembly lift adjustment mechanism of claim 1, wherein, It also includes a fine-tuning mechanism connected between the control lever (1) and the connecting rod (2). The fine-tuning mechanism includes an adjusting rod (7), an adjusting rod support sleeve (8) sleeved outside the adjusting rod (7), and an inner thread sleeve (9) sleeved outside the adjusting rod (7). The adjusting rod (7) is movably connected to the control lever (1) through the adjusting rod support sleeve (8), and the adjusting rod (7) is movably connected to the connecting rod (2) through the inner thread sleeve (9). It is used to drive the connecting rod (2) to move when the adjusting rod (7) rotates.

6. The work assembly lift adjustment mechanism of claim 5, wherein, The adjusting rod support sleeve (8) is hinged to the control rod (1) externally, and is rotatably connected to the adjusting rod (7) internally. The adjusting rod support sleeve (8) and the adjusting rod (7) are relatively fixed in the axial direction of the adjusting rod (7). The adjusting rod (7) is also connected to a second limiting member for limiting its rotation relative to the adjusting rod support sleeve (8).

7. The work assembly lift adjustment mechanism of claim 6, wherein, The second limiting member is an anti-rotation pin (20) that penetrates the side wall of the adjusting rod support sleeve (8) and whose end tends toward the adjusting rod (7). The outer wall of the adjusting rod (7) is provided with an anti-rotation groove (71) that matches the anti-rotation pin along its circumference.

8. The work assembly lift adjustment mechanism of claim 7, wherein, The pin rod of the rotation-stopping pin (20) is connected with an elastic member for driving the inner end thereof to the rotation-stopping groove (71).

9. The work assembly lift adjustment mechanism of claim 5, wherein, The adjusting rod (7) is threadedly connected with an inner sleeve (9), and the inner sleeve (9) is hingedly connected with the connecting rod (2).

10. The work assembly lift adjustment mechanism of claim 5, wherein, The top end of the adjusting rod (7) is connected with a hand wheel (6) for controlling the rotation of the adjusting rod (7).

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