Trundle with height-adjustable structure
By designing casters with a height-adjustable structure and utilizing the coordination of limit blocks and flaps, the problem of multiple people lifting and the large space occupied by flatbed carts is solved, and single-person operation, small space, and high-efficiency plate transportation are achieved.
Patent Information
- Application Number
- CN202511204536.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-27
- Publication Date
- 2025-10-17
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the existing technology, the transportation of large panels mostly relies on multiple people or flatbed carts, resulting in high labor costs and large space occupation, and the efficiency of use needs to be improved.
A caster with a height-adjustable structure is designed, which includes components such as a foot frame, a wheel body, a bracket and a flap. The bracket can be switched between tilt and vertical states through the cooperation of a limit block and a fixed frame. Combined with the tilt support and braking function of the flap, the transportation stability and efficiency are improved.
It can be operated by one person, takes up little space, and can quickly switch between transportation and parking, which improves the efficiency and stability of plate transportation, reduces labor costs and optimizes space utilization.
Smart Images
Figure CN120792371A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of transportation equipment, in particular to a caster with height-adjustable structure. BACKGROUND
[0002] When carrying out decoration, transformation and other operations, it is often necessary to transport some large pieces of board and the like.
[0003] The board is mostly transported to the construction center by vehicle first, and then manually transported to the operation point. The existing mode mostly relies on multiple people to lift or a flat cart. The former consumes manpower and increases cost, and the latter occupies a large space and the use efficiency needs to be improved.
[0004] Therefore, it is necessary to provide a caster with height-adjustable structure to solve the above problems. SUMMARY
[0005] The present application relates to the technical field of transportation equipment, in particular to a caster with height-adjustable structure.
[0006] To achieve the above object, the present application provides the following technical scheme: a caster with height-adjustable structure, comprising a foot support, the two sides of the foot support are provided with wheel bodies for assisting manual movement;
[0007] The top end of the foot support has a top groove, one side of the top groove is an inclined surface, the other side is a vertical surface, the inside of the top groove is provided with an angle-adjustable bracket, the bracket is in U shape, the top of the foot support is fixed with a vertical plate, the vertical plate is provided with a slide, the slide extends to the foot support and penetrates through the inclined surface of the top groove, the inside of the slide is slidably provided with a limiting block for locking the bracket;
[0008] The top of the vertical plate is hingedly provided with a flap, the bottom end of the foot support is provided with a fixed frame which moves up and down synchronously with the limiting block;
[0009] When transporting, the flap is vertically distributed, the limiting block abuts on the outer wall of the bracket, and the fixed frame is separated from the ground. When stopping, the limiting block moves downward and is disengaged from the bracket, the fixed frame abuts on the ground, and the flap is inclined to support.
[0010] Preferably, the bottom end of the slide is provided with a through hole, the through hole penetrates through the lower surface of the foot support, the inside of the through hole is slidably provided with a vertical rod, and the limiting block and the fixed frame are fixed on the vertical rod.
[0011] Preferably, the top of the vertical rod is fixed with a cross block, the cross block is slidably arranged in the inside of the slide, one end of the cross block away from the vertical rod is rotatably connected with a cylinder, the flap abuts and cooperates with the cylinder, a spring is sleeved on the vertical rod, the top end of the spring is fixed on the limiting block, and the bottom end of the spring is fixed on the bottom of the slide.
[0012] Preferably, the wheel body is fixed with a shaft rod, and the shaft rod is rotationally arranged on the foot support.
[0013] Preferably, the outer part of the shaft rod is provided with a fixed frame, the fixed frame is in an inverted U shape, the fixed frame is fixed on the fixed frame, a plurality of clamping grooves are formed on the outer wall of the shaft rod, the plurality of clamping grooves are uniformly distributed around the axis of the shaft rod, and the top surface of the fixed frame is fixed with a clamping tooth.
[0014] Preferably, the shaft rod is rotationally connected with a round block, the two sides of the round block are fixed with connecting rods, the ends of the connecting rods away from the round block are fixedly connected with side rods, and the side rods are fixed on the outer wall of the foot support.
[0015] Preferably, the end of the turning plate away from the vertical plate is integrally formed with an ear block.
[0016] Preferably, the turning plate is slidably provided with a limiting sleeve matched with the vertical plate, the top of the side wall of the vertical plate is fixed with an inclined plate, and the limiting sleeve is matched with the inclined plate.
[0017] Preferably, the two ends of the top groove are fixed with supporting plates, a fixed shaft is fixed between the two supporting plates, and the supporting seat is rotationally arranged on the fixed shaft.
[0018] Preferably, the fixed frame is in a rectangular frame shape.
[0019] The technical effects and advantages of the present application are as follows:
[0020] 1. By arranging the foot support, the wheel body, the supporting seat and the turning plate, a single person can operate the transportation, the space occupied is small, the rapid switching of transportation and midway parking can be realized, the inclination support, the anti-slip brake and the inclination of the plate are matched, and the use efficiency of the casters is improved.
[0021] 2. By using the turning plate and the like, the height of the limiting block is adjusted, the inclination state of the supporting seat is controlled according to the needs, the operation convenience is ensured, and the stability of the plate during transportation or midway parking is improved.
[0022] 3. By using the turning plate to swing and press, and cooperating with the vertical rod and the like, the fixed frame is brought into contact with the ground, the contact range with the ground is expanded, the effect of the brake is realized, the situation of random sliding is prevented, and the plate is supported.
[0023] 4. By arranging the turning plate, the limiting sleeve and the like, a vertical limiting structure is formed, the stability of the plate positioning is ensured, the operator can hold the plate, the synchronization and coordination of the plate and the device are better, the vertical rod, the limiting block and the fixed frame are driven to slide downward by the pressing, the height position is adjusted, in addition, the inclination support can be realized, and the operation is convenient.
[0024] 5、Through setting the structure of fixed frame, clamping tooth and clamping groove, the plate is turned to turn and press, and cooperates with the structure of vertical rod, etc., the wheel body and shaft rod are locked, the inner and outer support cooperates, the stability of the caster positioning is guaranteed. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 It is a perspective structural schematic view of the caster with height-adjustable structure.
[0026] Figure 2 It is a perspective structural schematic view of the caster with height-adjustable structure. Figure 1
[0027] Figure 3 It is a perspective structural schematic view of the caster with height-adjustable structure.
[0028] Figure 4 It is a perspective structural schematic view of the caster with height-adjustable structure. Figure 3
[0029] Figure 5 It is a sectional structural schematic view of the caster with height-adjustable structure.
[0030] Figure 6 It is a sectional structural schematic view of the caster with height-adjustable structure. Figure 5
[0031] Figure 7 It is a sectional structural schematic view of the caster with height-adjustable structure. Figure 5
[0032] Figure 8 It is a structural schematic view of the foot support and vertical plate.
[0033] Figure 9 It is a structural schematic view of the foot support and vertical plate.
[0034] Figure 10 It is a sectional structural schematic view of the caster with height-adjustable structure. Figure 9
[0035] Figure 11 It is a structural schematic view of the foot support and vertical plate.
[0036] In the drawing: 1, foot support; 2, wheel body; 3, shaft rod; 4, top groove; 5, support plate; 6, support seat; 7, vertical plate; 8, slide; 9, limiting block; 10, spring; 11, fixed frame; 12, through hole; 13, vertical rod; 14, connecting block; 15, fixed frame; 16, clamping tooth; 17, clamping groove; 18, turning plate; 19, ear block; 20, cross block; 21, cylinder; 22, limiting sleeve; 23, inclined plate; 24, side rod; 25, connecting rod; 26, round block; 27, fixed shaft. DETAILED DESCRIPTION
[0037] The present invention provides Figures 1-11 The height-adjustable caster shown in the figure comprises a frame 1, with wheels 2 mounted on either side of the frame 1. A shaft 3 is fixed to the wheels 2, the wheels 2 being concentric with the shaft 3. The shaft 3 is rotatably mounted on the sidewalls of the frame 1. In actual use, plate-like materials such as boards are placed on the frame 1, while the wheels 2 are in contact with the ground, assisting manual movement.
[0038] The end of the shaft 3 away from the tripod 1 is rotatably connected to a round block 26. Connecting rods 25 are fixed to both sides of the round block 26. The end of the connecting rod 25 away from the round block 26 is fixedly connected to a side rod 24, which is fixed to the outer wall of the tripod 1. The side rod 24, connecting rod 25, and round block 26 improve the stability of the shaft 3 and the wheel body 2 during use. Ball bearings or the like can be installed between the shaft 3 and the tripod 1, and between the shaft 3 and the round block 26 to ensure smooth rotation of the wheel body 2.
[0039] To facilitate the transportation of the plates, a top groove 4 is opened at the top of the tripod 1, and support plates 5 are fixed at both ends of the top groove 4. A fixed shaft 27 is fixed between the two support plates 5. The fixed shaft 27 is distributed along the length direction of the top groove 4. A bracket 6 is set on the fixed shaft 27, and the bracket 6 is U-shaped.
[0040] During use, the operator inserts the plate into the groove of the bracket 6, and usually the middle part of the bottom end of the plate contacts the bracket 6 to better maintain balance; the operator supports the plate with his hands and pushes it to the designated position. The whole process can be operated by one person, saving manpower. Compared with flatbed carts, it takes up less space and is more flexible to operate. There is no need to use ropes for tying, which improves transportation efficiency.
[0041] Take the door panel as an example: the middle section of the length side of the door panel is inserted into the groove of the bracket 6, and the width side of the door panel is distributed vertically, so that the highest point of the door panel after positioning will not be too high, which is convenient for the operator to push it by hand, and can also be adjusted according to specific usage.
[0042] Taking into account the unexpected situation during transportation (the packaging film on the edge of the plate spreads out and drags on the ground, and needs to be quickly wrapped twice to fix it, etc.), due to the lack of support structure and no assistance, the plate is directly leaned against the wall next to it, and only the wheel body 2 is in contact with the ground, which is prone to slipping. The operator can only remove the plate and lean it against the wall, and then put the plate into the groove of the bracket 6 again when continuing to move. The operation is cumbersome, especially when the plate is heavy. In order to improve transportation efficiency, the bracket 6 is rotatably set on the fixed shaft 27 so that it can swing and the angle can be adjusted, and one side of the top groove 4 is an inclined surface and the other side is a vertical surface.
[0043] Reference Figure 6The left side of the top groove 4 is an inclined surface, while the right side is a vertical surface. When the bracket 6 is in a vertical position, the left side is an inclined surface, which provides swinging space, so the bracket 6 can swing to the left. However, the right side is a vertical surface, and the right part of the bracket 6 is directly attached to the vertical surface, so the bracket 6 cannot swing to the right. Since the bracket 6 can switch between an inclined state and a vertical state, during transportation, the bracket 6 is in a vertical state, so that the plate is also in a vertical state, which is convenient for the operator to push and transport by hand. When it is necessary to stop midway, the bracket 6 is swung to the left to form an inclined state, and the plate is also tilted to the left. At this time, the left side can be used for tilted support, which is more stable than when the plate is in a vertical state.
[0044] In order to realize the locking control of the bracket 6, a vertical plate 7 is fixed on the top of the tripod 1. The vertical plate 7 is close to the inclined surface of the top groove 4. A slide 8 is opened on the vertical plate 7. The slide 8 extends to the tripod 1 and passes through the inclined surface of the top groove 4. A limit block 9 is sliding inside the slide 8 to lock the bracket 6. When the limit block 9 slides to the point where the slide 8 is located at the upper half of the tripod 1 (refer to Figure 6 ), at this time, the limit block 9 abuts against the outer wall of the bracket 6, and the other side of the bracket 6 directly fits on the vertical surface of the top groove 4, locking the bracket 6 in a vertical state; when the limit block 9 slides to the lower half of the slide 8 located at the bottom of the tripod 1 (refer to Figure 11 ), at this time, the limit block 9 is staggered with the bracket 6, and the bracket 6 can be tilted toward the inclined surface of the top groove 4.
[0045] Balls or the like can be provided at the contact position between the limit block 9 and the slideway 8 to ensure smooth sliding.
[0046] In order to ensure the stability of the support and not affect the transportation and movement, a fixed frame 11 is provided at the bottom end of the tripod 1. The fixed frame 11 is in the shape of a rectangular frame. When in contact with the ground, it can have a large contact range with the ground and can be retracted to surround the outside of the tripod 1. It can also be set to other shapes, such as a regular hexagon, etc., according to specific usage.
[0047] A through hole 12 is formed at the bottom end of the slide 8. The through hole 12 passes through the lower surface of the tripod 1. A vertical rod 13 is slidably provided inside the through hole 12. The limit block 9 is fixed to the vertical rod 13. The bottom end of the vertical rod 13 is fixedly connected to a connecting block 14, which is fixedly connected to the fixed frame 11. The vertical rod 13 is provided so that the limit block 9, the fixed frame 11 and the vertical rod 13 can move up and down synchronously, thereby synchronously adjusting the height of the limit block 9 and the fixed frame 11.
[0048] A flap 18 is hinged on the top of the vertical plate 7 , and an ear block 19 is integrally formed at one end of the flap 18 away from the vertical plate 7 , and an inclined surface is provided at the end of the ear block 19 away from the flap 18 .
[0049] The top of the vertical rod 13 is fixed with a cross block 20, which is slidingly arranged in the interior of the slide 8, and the end of the cross block 20 away from the vertical rod 13 is rotationally connected with a cylinder 21, and the flap 18 is in abutting cooperation with the cylinder 21; the vertical rod 13 is sleeved with a spring 10, the top end of the spring 10 is fixed on the limiting block 9, and the bottom end of the spring 10 is fixed on the bottom of the slide 8.
[0050] The contact position of the cross block 20 with the slide 8 can be provided with a ball or the like to ensure the smoothness of sliding.
[0051] The flap 18 is slidingly provided with a limiting sleeve 22 cooperating with the vertical plate 7; the top of the side wall of the vertical plate 7 is fixed with an inclined plate 23, and the inclined plate 23 is provided with two (refer to Figure 2 ), and the limiting sleeve 22 also cooperates with the inclined plate 23.
[0052] When the flap 18 is vertically distributed, the limiting sleeve 22 is distributed at the connecting position of the flap 18 and the vertical plate 7 (refer to Figure 7 ), at this time, the flap 18 will not be flipped at will, the bottom end of the plate is clamped into the groove of the bracket 6, the flap 18 and the ear block 19 form a vertical limiting structure with a certain height, and the ear block 19 abuts on the outer wall of the plate to ensure the stability of the positioning of the plate, and the vertical distribution of the flap 18 can be used as a hand holding tool, so that the plate and the device are more synchronous and coordinated.
[0053] When support is needed, the flap 18 is swung to be inclined, and the inclined surface of the ear block 19 is in contact with the ground (refer to Figure 11 ), at this time, the two inclined plates 23 are located on both sides of the flap 18, and the sliding limiting sleeve 22 is clamped on the two inclined plates 23, so that the flap 18 will not be flipped at will, at this time, the flap 18, the vertical plate 7, the foot support 1 and the ground form a triangular structure, and a stable support is formed.
[0054] During the swinging process of the flap 18, the flap 18 is in contact with the cylinder 21 and extrudes the cross block 20 to slide downward in the interior of the slide 8, the vertical rod 13, the limiting block 9 and the fixed frame 11 are synchronously slid downward, the spring 10 is contracted, and the limiting block 9 is slid to the lower half of the slide 8 located at the part of the foot support 1 (refer to Figure 11 ), without affecting the inclination of the bracket 6 to the inclined surface of the top groove 4; and the fixed frame 11 is in contact with the ground to realize the effect of brake positioning.
[0055] When the flap 18 is reset to the vertical state, the reset elastic force of the spring 10 makes the vertical rod 13, the limiting block 9 and the fixed frame 11 synchronously slide upward.
[0056] The vertical limiting structure is formed by setting the turning plate 18 and the limiting sleeve 22, so as to ensure the stability of the plate positioning, and the operator can hold the turning plate 18, and the plate and the device are more coordinated.
[0057] The inner wall of the limiting sleeve 22 is provided with a non-slip pad, and when the limiting sleeve 22 is clamped on the inclined plate 23, it will not slide down at will, and a latch or other structure can also be provided for reinforcement, which can be adjusted according to the specific use.
[0058] In actual use, the operator brings the device to the plate loading area, the wheel body 2 is in contact with the ground, the turning plate 18 is vertically distributed, and the limiting sleeve 22 is distributed at the connecting part of the turning plate 18 and the vertical plate 7 (see Figure 5 ), at this time the turning plate 18 will not be turned at will; and the limiting block 9 is located at the upper half of the sliding groove 8 located in the part of the foot support 1 (see Figure 6 ), at this time the limiting block 9 abuts against the outer wall of the support 6, and the other side of the support 6 directly abuts against the vertical surface of the top groove 4, so as to lock the support 6 in a vertical state.
[0059] The operator in the loading area clamps the bottom end of the plate into the groove of the support 6, and the operator holds the turning plate 18 during the process to ensure the stability of the whole trolley; since the support 6 is locked in a vertical state at this time, the efficiency of loading is ensured, and after loading is completed, the lug 19 abuts against the outer wall of the plate to ensure the stability of the plate positioning.
[0060] When it is necessary to stop halfway, the operator holds the plate with one hand and slides the limiting sleeve 22 upward with the other hand to release the vertical locking of the turning plate 18, then swings the turning plate 18 to be inclined, and the inclined surface of the lug 19 is in contact with the ground (see Figure 11 ).
[0061] The inclined surface of the lug 19 and the bottom of the fixed frame 11 can be provided with a protective protrusion, which can increase the friction with the ground.
[0062] During the swinging process of the turning plate 18, the turning plate 18 is in contact with the cylinder 21 and extrudes the horizontal block 20 to slide downward in the sliding groove 8, and the vertical rod 13, the limiting block 9 and the fixed frame 11 slide downward synchronously, and the spring 10 is contracted, that is, the turning plate 18 is swung and extruded, and cooperates with the vertical rod 13 and other structures, so that the fixed frame 11 is in contact with the ground, the contact range with the ground is expanded, the effect of the brake is realized, the situation of sliding at will is prevented, and the plate is supported.
[0063] The limiting block 9 slides to the lower half of the sliding groove 8 located in the part of the foot support 1 (see Figure 11 ), and the support 6 can be inclined to the inclined surface of the top groove 4; when the limiting sleeve 22 is clamped on the inclined plate 23, the turning plate 18, the limiting block 9 and the fixed frame 11 are all locked and will not be turned at will.
[0064] The operator controls the board and the support 6 to be inclined towards the inclined surface of the top groove 4, and the side wall of the board is abutted at the position where the vertical plate 7 is connected with the turning plate 18 and is supported by the turning plate 18 to ensure the stability of the board, and compared with supporting the board in a vertical state, the stability is better when the board is inclined towards the turning plate 18 and then is supported.
[0065] The inclination angle of the board is appropriate, for example, 10°-15°, to ensure the supporting effect.
[0066] The width of the vertical plate 7 can be set to be larger to have a larger contact range with the board.
[0067] If it is needed to move again, the operator controls the board and the support 6 to be restored to a vertical state, then controls the turning plate 18 to be in a vertical state and to be distributed in line with the vertical plate 7, and the limiting sleeve 22 is distributed at the connecting position of the turning plate 18 and the vertical plate 7 (refer to Figure 7 ), to lock the turning plate 18; when the turning plate 18 is reset to a vertical state, the reset elastic force of the spring 10 makes the vertical rod 13, the limiting block 9 and the fixed frame 11 slide upward synchronously, the fixed frame 11 is separated from the ground and does not affect the movement of the device, at the same time, the limiting block 9 slides to the upper half of the slide 8 located at the part of the foot support 1 (refer to Figure 6 ), to lock the support 6 in a vertical state to avoid the board from swinging randomly.
[0068] After moving to the unloading area, the board is taken off.
[0069] The foot support 1, the wheel body 2, the support 6 and the turning plate 18 and other structures are arranged to transport by one person, the space occupied is small, the fast switching of transportation and stopping at the midway can be realized, the inclination support, the anti-slip brake and the inclination of the board are matched to improve the use efficiency of the caster.
[0070] The height of the limiting block 9 is adjusted by the turning plate 18 and other structures to control the inclination state of the support 6 as needed to ensure the convenience of operation and improve the stability of the board during transportation or stopping at the midway.
[0071] When the fixed frame 11 is in contact with the ground, the wheel body 2 and the shaft rod 3 are locked to prevent the wheel body 2 from being in a rollable state and affecting the effect of the brake, the outer part of the shaft rod 3 is provided with a fixed frame 15, the fixed frame 15 is in an inverted U shape, the fixed frame 15 is fixed on the fixed frame 11, and the fixed frame 11 moves up and down synchronously with the fixed frame 15.
[0072] The outer wall of the shaft rod 3 is provided with a plurality of clamping grooves 17, the plurality of clamping grooves 17 are uniformly distributed around the axis of the shaft rod 3, the lower surface of the top of the fixed frame 15 is fixed with a clamping tooth 16, and the clamping tooth 16 is clamped and matched with the clamping groove 17.
[0073] In actual use, when the vertical rod 13, the limiting block 9 and the fixed frame 11 are synchronously downwardly slid, the fixed frame 11 drives the fixed stand 15 to synchronously move downward, when the fixed frame 11 contacts with the ground, the clamping tooth 16 is clamped to the inside of the corresponding clamping groove 17, the wheel body 2 and the shaft rod 3 are locked, at this time, the wheel body 2 cannot roll, external support is formed, and the external support cooperates with the internal support formed by the fixed frame 11.
[0074] By setting the fixed stand 15, the clamping tooth 16 and the clamping groove 17 and other structures, the wheel body 2 and the shaft rod 3 are locked by the turning and extruding of the turning plate 18 and cooperating with the vertical rod 13 and other structures, internal and external support is cooperated, the stability of the caster positioning is ensured.
[0075] Working principle: the operator brings the device to the plate feeding area, the wheel body 2 contacts with the ground, the turning plate 18 is vertically distributed, and the limiting sleeve 22 is distributed at the connecting position of the turning plate 18 and the vertical plate 7 (refer to Figure 5 ), at this time, the turning plate 18 cannot be turned at will; and the limiting block 9 is located at the upper half of the sliding groove 8 located in the part of the foot support 1 (refer to Figure 6 ), at this time, the limiting block 9 abuts against the outer wall of the support seat 6, and the other side of the support seat 6 directly abuts against the vertical surface of the top groove 4, the support seat 6 is locked in the vertical state.
[0076] The operator at the feeding area clamps the bottom end of the plate into the groove of the support seat 6, in this process, the operator holds the turning plate 18 to ensure the stability of the caster as a whole; since the support seat 6 is locked in the vertical state at this time, the efficiency of feeding is ensured, after feeding is completed, the lug block 19 abuts against the outer wall of the plate to ensure the stability of the plate positioning.
[0077] When stopping halfway, the operator holds the plate with one hand and slides the limiting sleeve 22 upward with the other hand to release the vertical locking of the turning plate 18, then swings the turning plate 18 to be inclined, and the inclined surface of the lug block 19 contacts with the ground (refer to Figure 11 ).
[0078] The turning plate 18 contacts with the cylinder 21 during the swinging process and extrudes the cross block 20 to slide downward in the inside of the sliding groove 8, the vertical rod 13, the limiting block 9 and the fixed frame 11 are synchronously downwardly slid, and the spring 10 is contracted, that is, the turning plate 18 is swung and extruded, and cooperates with the vertical rod 13 and other structures, so that the fixed frame 11 contacts with the ground, the contact range with the ground is expanded, the effect of the brake is realized, the situation of random sliding is prevented, and the plate is supported.
[0079] The limiting block 9 slides to the lower half of the sliding groove 8 located in the part of the foot support 1 (refer to Figure 11 ), the support seat 6 can be inclined to the inclined surface direction of the top groove 4; when the limiting sleeve 22 is clamped on the inclined plate 23, the turning plate 18, the limiting block 9 and the fixed frame 11 are all locked and cannot be turned at will.
[0080] The operator controls the plate together with the bracket 6 to tilt toward the inclined surface of the top groove 4. The side wall of the plate abuts against the connection between the vertical plate 7 and the flap 18, and is tilted and supported by the flap 18 to ensure the stability of the plate. Compared with supporting the vertical plate, tilting the plate toward the flap 18 and then supporting it has better stability.
[0081] If it is necessary to move again, the operator controls the plate and the bracket 6 to return to the vertical state, and then controls the flap 18 to be vertical and collinear with the vertical plate 7, and the limit sleeve 22 is distributed at the connection between the flap 18 and the vertical plate 7 (refer to Figure 7 ), lock the flap 18; when the flap 18 is reset to the vertical state, the reset force of the spring 10 causes the vertical rod 13, the limit block 9, the fixed frame 11 and the like to slide upward synchronously, and the fixed frame 11 is out of contact with the ground without affecting the movement of the device. At the same time, the limit block 9 slides to the upper half of the slide 8 located at the tripod 1 (refer to Figure 6 ), lock the bracket 6 into a vertical state to prevent the plate from swinging at will.
[0082] After moving to the unloading area, remove the plate.
Claims
1. A caster with a height-adjustable structure, comprising a foot frame (1), characterized in that: Wheels (2) for assisting manual movement are provided on both sides of the tripod (1); The top of the tripod (1) is provided with a top groove (4), one side of the top groove (4) is an inclined surface, and the other side is a vertical surface, an angle-adjustable bracket (6) is provided inside the top groove (4), and the bracket (6) is U-shaped, a vertical plate (7) is fixed on the top of the tripod (1), a slide (8) is provided on the vertical plate (7), the slide (8) extends to the tripod (1) and passes through the inclined surface of the top groove (4), and a limit block (9) for locking the bracket (6) is slidably provided inside the slide (8); The top of the vertical plate (7) is hinged with a flap (18), and the bottom end of the tripod (1) is provided with a fixed frame (11) that moves up and down synchronously with the limit block (9); During transportation, the flap (18) is vertically distributed, and the limit block (9) abuts against the outer wall of the bracket (6), and the fixed frame (11) is separated from the ground. When parked, the limit block (9) moves downward to stagger with the bracket (6), the fixed frame (11) abuts against the ground, and the flap (18) is tilted for support.
2. The caster with a height adjustable structure according to claim 1, characterized in that: A through hole (12) is provided at the bottom end of the slideway (8), and the through hole (12) passes through the lower surface of the tripod (1). A vertical rod (13) is slidably provided inside the through hole (12), and the limit block (9) and the fixed frame (11) are both fixed on the vertical rod (13).
3. The caster with a height adjustable structure according to claim 2, characterized in that: A transverse block (20) is fixed on the top of the vertical rod (13), and the transverse block (20) is slidably arranged inside the slideway (8). The end of the transverse block (20) away from the vertical rod (13) is rotatably connected to a cylinder (21), and the flap (18) is in abutment with the cylinder (21). A spring (10) is mounted on the vertical rod (13), and the top end of the spring (10) is fixed on the limit block (9), and the bottom end of the spring (10) is fixed to the bottom of the slideway (8).
4. The caster with a height-adjustable structure according to claim 1, characterized in that: A shaft (3) is fixed on the wheel body (2), and the shaft (3) is rotatably arranged on the tripod (1).
5. The caster with a height-adjustable structure according to claim 4, characterized in that: A fixed frame (15) is provided on the outside of the shaft (3), and the fixed frame (15) is in an inverted U shape. The fixed frame (15) is fixed on the fixed frame (11). A clamping groove (17) is provided on the outer wall of the shaft (3). There are multiple clamping grooves (17), and the multiple clamping grooves (17) are evenly distributed around the axis of the shaft (3). A clamping tooth (16) is fixed on the lower surface of the top of the fixed frame (15), and the clamping tooth (16) is clamped and matched with the clamping groove (17).
6. The caster with a height-adjustable structure according to claim 4, characterized in that: A round block (26) is rotatably connected to the shaft (3), connecting rods (25) are fixed on both sides of the round block (26), and one end of the connecting rod (25) away from the round block (26) is fixedly connected to a side rod (24), and the side rod (24) is fixed on the outer wall of the tripod (1).
7. The caster with a height-adjustable structure according to claim 1, characterized in that: An ear block (19) is integrally formed on one end of the flap (18) away from the vertical plate (7).
8. The caster with a height-adjustable structure according to claim 1, characterized in that: A limiting sleeve (22) cooperating with the vertical plate (7) is slidably provided on the flap (18), an inclined plate (23) is fixed on the top of the side wall of the vertical plate (7), and the limiting sleeve (22) cooperates with the inclined plate (23).
9. The caster with a height-adjustable structure according to claim 1, characterized in that: Support plates (5) are fixed at both ends of the top groove (4), a fixed shaft (27) is fixed between the two support plates (5), and the bracket (6) is rotatably arranged on the fixed shaft (27).
10. The caster with a height-adjustable structure according to claim 1, characterized in that: The fixed frame (11) is in the shape of a rectangular frame.