A curbstone carrying tool

Abstract

The present application relates to road construction auxiliary tool technical field, especially relate to a kind of curbstone handling tool, including: cart, cross arm and curbstone, cross arm is arranged at the top of cart, and the front end of cross arm is provided with clamp assembly for clamping curbstone, and the rear end of cross arm is provided with handle assembly, and the rear side of the top of cross arm is provided with movable counterweight assembly, and movable counterweight assembly includes: counterweight group, after clamp assembly clamps curbstone, by handle assembly to press down the rear end of cross arm, make the counterweight group in movable counterweight assembly move to close to handle assembly side, the present application provides a kind of labor-saving curbstone handling tool.

Description

Technical Field

[0001] This invention relates to the field of road construction auxiliary tools, and in particular to a curbstone transport tool. Background Technology

[0002] When laying curb stones in road construction, especially in factory areas and residential areas, construction workers use traditional manual handling methods, which is time-consuming and labor-intensive. Moreover, the curb stones are rectangular, and each stone has different length and width dimensions and is quite heavy. There is no point of leverage for handling them, so the work efficiency is very low during the handling process, and it is easy to cause problems such as squeezing hands or slipping and injuring feet.

[0003] Patent CN217350675U discloses a curbstone handling device, including a support frame. The support frame is composed of several steel pipes that are fixedly connected horizontally and vertically. A horizontal main shaft is fixedly connected to the bottom of the support frame, and rollers are installed at both ends of the main shaft. A horizontal bar perpendicular to the plane of the support frame is fixedly connected to the top of the support frame. A pulley system is provided on the support frame and the horizontal bar. A fixing ring is fixedly connected to the end of the horizontal bar, and two lifting rings are sleeved on the fixing rings. A clamp is connected to the lower part of the lifting rings. A steel wire rope is provided on the pulley system. One end of the steel wire rope is divided into two strands, which are fixedly connected to the lifting rings respectively. During use, the construction worker can control the clamp to clamp the curbstone through the steel wire rope and move it to the position where the curbstone should be installed. The construction worker and the curbstone always maintain a certain distance to avoid the curbstone falling and squeezing the worker's hand or slipping and injuring the foot.

[0004] However, due to the large weight of the curb stones, construction workers still need to continuously apply significant downward pressure to counteract their weight when lifting and moving them using leverage, which is physically demanding for the workers. Summary of the Invention

[0005] The purpose of this invention is to provide a curbstone transport tool to solve the technical problems existing in the background art.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: A curbstone transport tool includes: a trolley, a cross arm, and a curbstone. The cross arm is disposed at the top of the trolley. A clamping assembly for clamping the curbstone is disposed at the front end of the cross arm. A handle assembly is disposed at the rear end of the cross arm. A movable counterweight assembly is disposed at the rear end of the top of the cross arm. The movable counterweight assembly includes a counterweight unit. After the clamping assembly clamps the curbstone, the handle assembly presses down on the rear end of the cross arm, causing the counterweight unit in the movable counterweight assembly to move closer to the handle assembly.

[0007] Furthermore, the trolley includes: a support shaft, bearings, movable wheels, and a column. The left and right ends of the support shaft are respectively rotatably connected to two movable wheels through two bearings. The top middle of the support shaft is fixedly connected to the bottom end of the cross arm through the column.

[0008] Furthermore, the trolley also includes: a connecting block and a Y-shaped support frame. Two connecting blocks and two Y-shaped support frames are symmetrically arranged. The two connecting blocks are fixedly connected to the middle of the bottom end and the front side of the bottom end of the cross arm, respectively. One end of the two Y-shaped support frames is fixedly connected to the two connecting blocks, and the two branch ends of the two Y-shaped supports are fixedly connected to the left and right sides of the support shaft, respectively.

[0009] Furthermore, the clamping assembly includes: a suspension rod, a first nut, a U-shaped frame, a hinge shaft, a second nut, a first boom, a second boom, clamping plates, and anti-detachment blocks. Three first nuts are provided. A vertical through-hole is provided at the front end of the cross arm. The suspension rod includes a head and a rod portion, with the diameter of the head being larger than the diameter of the rod portion. The rod portion of the suspension rod slides vertically through the through-hole and extends below it. A connecting hole is provided at the top of the U-shaped frame, and the lower end of the rod portion of the suspension rod moves through the connecting hole. The three first nuts are threadedly connected to the rod portion of the suspension rod, with one pressing against the bottom end face of the cross arm, and the other two located at the top of the outer wall and the top of the inner cavity of the U-shaped frame, respectively. One end of the first boom and the second boom are hinged to the U-shaped frame via hinge shafts. Two clamping plates are symmetrically fixedly connected to the bottom of the other ends of the first boom and the second boom, and two anti-detachment blocks are symmetrically fixedly connected to one side of the two clamping plates facing each other. Two second nuts are provided, and the two second nuts are threadedly connected to the left and right ends of the hinge shaft, respectively.

[0010] Furthermore, when the two clamping plates clamp the curbstone, the first and second booms form a V-shaped structure with the opening facing downwards; the clamping assembly also includes: connecting columns and double-hook tension springs. There are two connecting columns, which are symmetrically fixedly connected to the left and right sides of the front end of the first and second booms. The two ends of the double-hook tension springs are respectively sleeved on the two connecting columns and have annular grooves.

[0011] Furthermore, the handle assembly includes: a vertical pole, a handle, and reinforcing rods. The vertical pole is vertically fixed to the top of the rear end of the cross arm. The handle is a cross bar, with the bottom center of the handle fixedly connected to the top of the vertical pole. Two reinforcing rods are provided, with their ends fixedly connected to the left and right sides of the bottom end of the handle and the left and right sides of the rear end of the cross arm, respectively.

[0012] Furthermore, the movable counterweight assembly includes: a slide rail, a limiting baffle, and a slider. The slide rail is fixedly connected to the top of the cross arm near the rear side. Two limiting baffles are symmetrically fixedly connected to the front and rear ends of the slide rail. The slider is slidably connected to the slide rail in the front-rear direction. The counterweight is mounted on the top of the slider.

[0013] Furthermore, the counterweight assembly includes: a positioning rod, a counterweight block, and a nut. The positioning rod is vertically fixed to the top center of the slider. Several counterweight blocks are provided, and a round hole is opened at the top center of each counterweight block. Several counterweight blocks are stacked and sleeved on the positioning rod through their round holes. The nut is threadedly connected to the positioning rod and presses the topmost counterweight block.

[0014] Furthermore, the movable counterweight assembly also includes: a sliding rod, a limiting plate, a contact plate, and a compression spring. Two sliding rods, limiting plates, contact plates, and compression springs are symmetrically arranged front and back. The limiting baffle has a through-hole. The sliding rod is slidably connected in the through-hole. The two ends of the sliding rod are respectively fixedly connected to the limiting plate and the contact plate, wherein the contact plate is located between the two limiting baffles. The compression spring is sleeved on the sliding rod and presses against the contact plate and the limiting baffle respectively.

[0015] Furthermore, it also includes: a boom and a footplate, one end of the boom being fixedly connected to the side of the crossarm near the rear end, and the other end of the boom being fixedly connected to a footplate.

[0016] Compared with the prior art, the beneficial effects of the present invention are: I. The present invention features a movable counterweight component. After the clamping component clamps the curbstone, the handle component presses down on the rear end of the cross arm, causing the counterweight in the movable counterweight component to slide to the side closer to the handle component under its own weight. This reduces the additional downward pressure that construction workers need to apply during the movement of the curbstone and reduces the physical exertion of the construction workers.

[0017] II. In this invention, the clamping assembly is designed so that, during use, the clamping assembly is aligned with the curbstone, and then the two clamping plates clamp the left and right side walls of the curbstone respectively. The anti-detachment blocks on the inner side of the clamping plates can increase the contact area between the clamping plates and the curbstone, thereby ensuring that the curbstone will not fall off during transportation. At the same time, the double-hook tension spring can increase the clamping force between the two clamping plates and the curbstone. After the curbstone is transported, by lifting the first and second booms upward, and under the action of the double-hook tension spring, the first and second booms form an upward-opening V-shaped structure, which facilitates the separation of the clamping assembly from the curbstone.

[0018] Third, the present invention uses two sets of sliding rods, limiting plates, contact plates and compression springs arranged symmetrically in front and behind to buffer the weight when it slides forward or backward, avoids direct impact on the limiting plate and prevents damage to the limiting plate, and improves the service life of the entire device. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of an embodiment of the present invention; Figure 2 This is a longitudinal sectional view of an embodiment of the present invention; Figure 3 This is a transverse longitudinal sectional view of the middle part of the hinge shaft in an embodiment of the present invention; Figure 4 This is a transverse longitudinal sectional view of the slide rail in an embodiment of the present invention; Figure 5 This is a schematic diagram of the usage state of the present invention.

[0020] The labels in the attached diagram are as follows: 1-Support shaft, 2-Bearing, 3-Moving wheel, 4-Column, 5-Horizontal arm, 6-Connecting block, 7-Y-shaped support frame, 8-Suspension rod, 9-Nut one, 10-U-shaped frame, 11-Hinge shaft, 12-Nut two, 13-Hanging arm one, 14-Hanging arm two, 15-Clamping plate, 16-Anti-detachment block, 17-Cutting stone, 18-Connecting column, 19-Double hook tension spring, 20-Upright pole, 21-Handle, 22-Reinforcing rod, 23-Slide rail, 24-Limiting baffle, 25-Slide rod, 26-Limiting plate, 27-Contact plate, 28-Compression spring, 29-Slider, 30-Positioning rod, 31-Counterweight block, 32-Nut three, 33-Hanging rod, 34-Foot plate. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] See Figures 1-5 As shown, a curbstone transport tool includes: a trolley, a crossarm 5, and a curbstone 17. The crossarm 5 is located at the top of the trolley. A clamping assembly for clamping the curbstone 17 is provided at the front end of the crossarm 5. A handle assembly is provided at the rear end of the crossarm 5. A movable counterweight assembly is provided at the rear side of the top end of the crossarm 5. The movable counterweight assembly includes a counterweight unit. After the clamping assembly clamps the curbstone, the handle assembly presses down on the rear end of the crossarm 5, causing the counterweight unit in the movable counterweight assembly to move to the side closer to the handle assembly.

[0023] The trolley includes: a support shaft 1, bearings 2, casters 3 and a column 4. The left and right ends of the support shaft 1 are rotatably connected to two casters 3 through two bearings 2. The top middle of the support shaft 1 is fixedly connected to the bottom end of the cross arm 5 through the column 4.

[0024] The trolley also includes: a connecting block 6 and a Y-shaped support frame 7. There are two connecting blocks 6 and two Y-shaped support frames 7 symmetrically arranged. The two connecting blocks 6 are fixedly connected to the middle of the bottom end and the front side of the bottom end of the cross arm 5, respectively. One end of the two Y-shaped support frames 7 is fixedly connected to the two connecting blocks 6, and the two branch ends of the two Y-shaped supports 7 are fixedly connected to the left and right sides of the support shaft 1, respectively. The two Y-shaped supports 7, together with the two connecting blocks 6, can improve the support strength and stability of the trolley.

[0025] The clamp assembly includes: suspension rod 8, nut 1 9, loop frame 10, hinge shaft 11, nut 2 12, boom 1 13, boom 2 14, clamping plate 15, and anti-slip block 16. Three nuts 1 9 are provided. A vertical through hole is provided at the front end of the cross arm 5. The suspension rod 8 includes a head and a rod section, with the diameter of the head larger than the diameter of the rod section. The rod section of the suspension rod 8 slides vertically through the through hole and extends below it. A connecting hole is provided at the top of the loop frame 10, and the lower end of the rod section of the suspension rod 8 moves through the connecting hole. The three nuts 1 9 are threaded onto the rod section of the suspension rod 8, with one pressing against the bottom end face of the cross arm 5, and the other two located on the loop frame 10. The top of the outer wall and the top of the inner cavity of the frame 10 are adjusted by two nuts 9 at the top of the outer wall and the top of the inner cavity, so that the height of the two clamping plates 15 can be adjusted according to the height of the curb stone when the cross arm is in a horizontal state. One end of the boom 13 and boom 24 are respectively hinged to the frame 10 through the hinge shaft 11. The bottom of the other end of the boom 13 and boom 24 are symmetrically fixedly connected to two clamping plates 15. Two anti-detachment blocks 16 are symmetrically fixedly connected to the opposite side of the two clamping plates 15. The anti-detachment blocks 16 can be made of rubber. There are two nuts 12, which are threaded to the left and right ends of the hinge shaft 11 respectively.

[0026] When the two clamping plates 15 clamp the curbstone 17, the first boom 13 and the second boom 14 form a downward-facing V-shaped structure. The clamping assembly also includes: connecting posts 18 and double-hook tension springs 19. There are two connecting posts 18, which are symmetrically fixedly connected to the left and right sides of the front end of the first boom 13 and the second boom 14. The two ends of the double-hook tension springs 19 are respectively sleeved on the two connecting posts 18 and have annular grooves. A horizontal plate is fixedly connected to the middle of the inner cavity of the U-shaped frame 10. The hinge shaft 11 is located in the middle position between the horizontal plate and the bottom plate of the U-shaped frame 10. When the entire device does not clamp the curbstone 17 and the first boom 13 and the second boom 14 form a downward-facing V-shaped structure, at this time, the bottom end faces of the first boom 13 and the second boom 14 are respectively connected to the U-shaped frame 10. The upper left and right corners of the bottom plate of frame 10 are in contact, and the distance between the lower bottom of the inner side of the two clamping plates 15 that are in contact with the side wall of the curbstone is smaller than the distance between the left and right side walls of the curbstone 17. When the entire device is not clamping the curbstone 17 and the boom 13 and boom 2 14 form an upward-facing V-shaped structure, the top surfaces of boom 13 and boom 2 14 are in contact with the lower left and right corners of the horizontal plate, and the distance between the lower bottom of the inner side of the two clamping plates 15 that are in contact with the side wall of the curbstone is greater than the distance between the left and right side walls of the curbstone 17. This design, on the one hand, increases the clamping force between the two clamping plates 15 and the curbstone 17 through the double hook tension spring 19; on the other hand, it facilitates the quick separation of the clamping assembly from the curbstone.

[0027] The handle assembly includes: a vertical pole 20, a handle 21, and a reinforcing rod 22. The vertical pole 20 is vertically fixed to the top of the rear end of the cross arm 5. The handle 21 is a cross bar, and the bottom middle of the handle 21 is fixedly connected to the top of the vertical pole 20. There are two reinforcing rods 22, and the two ends of the two reinforcing rods 22 are respectively fixedly connected to the left and right sides of the bottom end of the handle 21 and the left and right sides of the rear end of the cross arm 5.

[0028] The movable counterweight assembly includes: a slide rail 23, a limiting baffle 24, and a slider 29. The slide rail 23 is fixedly connected to the top of the cross arm 5 near the rear side. Two limiting baffles 24 are symmetrically fixedly connected to the front and rear ends of the slide rail 23. The slider 29 is slidably connected to the slide rail 23 in the front-rear direction, and the counterweight is set at the top of the slider 29.

[0029] The counterweight assembly includes: a positioning rod 30, counterweight blocks 31, and nuts 32. The positioning rod 30 is vertically fixed to the top center of the slider 29. Several counterweight blocks 31 are provided, and a round hole is opened at the top center of each counterweight block 31. Several counterweight blocks 31 are stacked and sleeved on the positioning rod 30 through their round holes. Nuts 32 are threaded onto the positioning rod 30 and press the topmost counterweight block 31. The appropriate number of counterweight blocks 31 can be installed according to the weight of the curbstone 17 and the needs of the construction personnel.

[0030] The movable counterweight assembly also includes: a slide rod 25, a limiting plate 26, a contact plate 27, and a compression spring 28. Two slide rods 25, two limiting plates 26, two contact plates 27, and two compression springs 28 are symmetrically arranged front and rear. A through-hole is provided on the limiting baffle 24, and the slide rod 25 is slidably connected within the through-hole. The two ends of the slide rod 25 are fixedly connected to the limiting plate 26 and the contact plate 27, respectively. The contact plate 27 is located between the two limiting baffles 24. The compression spring 28 is sleeved on the slide rod 25 and presses against the contact plate 27 and the limiting baffle 24 respectively. Through the two sets of symmetrically arranged slide rods 25, limiting plates 26, contact plates 27, and compression springs 28, the counterweight is buffered when sliding forward or backward, preventing direct impact on the limiting baffle 24 and thus avoiding damage to it, thereby improving the service life of the entire device.

[0031] The curbstone handling tool also includes: a lifting rod 33 and a foot plate 34. One end of the lifting rod 33 is fixedly connected to the side of the cross arm 5 near the rear end, and the other end of the lifting rod 33 is fixedly connected to the foot plate 34. The foot plate 34 has a U-shaped frame structure, which makes it convenient for construction workers to put one foot into the U-shaped frame and then use their hands and feet to exert downward force at the same time to pry up the curbstone.

[0032] Working principle: One worker moves the entire transport tool to the curbstone attachment to be transported, while another worker aligns the clamp assembly with the curbstone and clamps the two clamping plates 15 onto the left and right sides of the curbstone. The worker then grips the handle 21 and inserts one foot into the footplate 34, pressing down to lift the curbstone. At this point, due to the horizontal arm 5 tilting upwards from front to back, the counterweight at the top of the slider 29 automatically slides closer to the handle 21 under gravity, reducing the additional downward pressure required by the worker during curbstone transport and minimizing physical exertion. After reaching the designated position, the worker lifts the handle 21 upwards. The other worker assists in aligning the curbstone with the designated position, then separates the two clamping plates 15 from the curbstone and simultaneously lifts the boom 13 and boom 24 upwards. The counterweight then moves to the front end of the slide rail 23. Because of this position, close to the lever support point of the horizontal arm 5, the worker can easily move the entire tool even without a load.

[0033] In the description of this invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent substitutions, and improvements made by those skilled in the art to the above embodiments without departing from the scope of the technical solution of the present invention, based on the technical essence of the present invention, shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A curbstone transport tool, characterized in that, include: The cart, the cross arm (5), and the curbstone (17) are provided. The cross arm (5) is located at the top of the cart. The front end of the cross arm (5) is provided with a clamping assembly for clamping the curbstone (17). The rear end of the cross arm (5) is provided with a handle assembly. The rear side of the top end of the cross arm (5) is provided with a movable counterweight assembly. The movable counterweight assembly includes a counterweight unit. After the clamping assembly clamps the curbstone, the handle assembly presses down on the rear end of the cross arm (5) to move the counterweight unit in the movable counterweight assembly to the side close to the handle assembly.

2. The curbstone transport tool according to claim 1, characterized in that: The trolley includes a support shaft (1), bearings (2), movable wheels (3) and a column (4). The left and right ends of the support shaft (1) are rotatably connected to two movable wheels (3) through two bearings (2). The top middle part of the support shaft (1) is fixedly connected to the bottom end of the cross arm (5) through the column (4).

3. The curbstone transport tool according to claim 2, characterized in that: The trolley also includes: a connecting block (6) and a Y-shaped support frame (7). There are two connecting blocks (6) and two Y-shaped support frames (7) symmetrically arranged. The two connecting blocks (6) are fixedly connected to the middle of the bottom end and the front side of the bottom end of the cross arm (5), respectively. One end of the two Y-shaped support frames (7) is fixedly connected to the two connecting blocks (6), and the two branch ends of the two Y-shaped supports (7) are fixedly connected to the left and right sides of the support shaft (1).

4. The curbstone transport tool according to claim 1, characterized in that: The clamp assembly includes: a suspension rod (8), a first nut (9), a loop frame (10), a hinge shaft (11), a second nut (12), a first boom (13), a second boom (14), a clamping plate (15), and an anti-detachment block (16). Three first nuts (9) are provided. A vertical through-hole is provided at the front end of the cross arm (5). The suspension rod (8) includes a head and a rod portion. The diameter of the head is larger than the diameter of the rod portion. The rod portion of the suspension rod (8) slides vertically through the through-hole and extends below it. A connecting hole is provided at the top of the loop frame (10). The lower end of the rod portion of the suspension rod (8) moves through the connecting hole. Three first nuts (9) are provided. The first and second arms (14) are respectively threaded to the rod of the suspension rod (8), one of which presses against the bottom end face of the cross arm (5), and the other two are respectively located at the top of the outer wall and the top of the inner cavity of the loop frame (10). One end of the first arm (13) and the second arm (14) are respectively hinged to the loop frame (10) through the hinge shaft (11). The other end of the first arm (13) and the second arm (14) are symmetrically fixedly connected to two clamping plates (15) at the bottom. Two anti-detachment blocks (16) are symmetrically fixedly connected to the opposite side of the two clamping plates (15). There are two nuts (12), which are respectively threaded to the left and right ends of the hinge shaft (11).

5. A curbstone transport tool according to claim 4, characterized in that: When the two clamping plates (15) clamp the curbstone (17), the first boom (13) and the second boom (14) form a V-shaped structure with the opening facing downwards; the clamping assembly also includes: connecting column (18) and double hook tension spring (19). There are two connecting columns (18), which are symmetrically fixedly connected to the left and right sides of the front end of the first boom (13) and the second boom (14). The two ends of the double hook tension spring (19) are respectively sleeved on the two connecting columns (18) and have annular grooves.

6. The curbstone transport tool according to claim 1, characterized in that: The handle assembly includes: a vertical pole (20), a handle (21), and a reinforcing rod (22). The vertical pole (20) is vertically fixed to the top of the rear end of the horizontal arm (5). The handle (21) is a horizontal bar. The bottom middle of the handle (21) is fixedly connected to the top of the vertical pole (20). There are two reinforcing rods (22). The two ends of the two reinforcing rods (22) are fixedly connected to the left and right sides of the bottom end of the handle (21) and the left and right sides of the rear end of the horizontal arm (5), respectively.

7. A curbstone transport tool according to claim 1, characterized in that: The movable counterweight assembly includes: a slide rail (23), a limiting baffle (24), and a slider (29). The slide rail (23) is fixedly connected to the top of the cross arm (5) near the rear side. Two limiting baffles (24) are symmetrically fixedly connected to the front and rear ends of the slide rail (23). The slider (29) is slidably connected to the slide rail (23) in the front-rear direction. The counterweight assembly is located at the top of the slider (29).

8. A curbstone transport tool according to claim 7, characterized in that: The counterweight assembly includes: a positioning rod (30), a counterweight (31), and a nut (32). The positioning rod (30) is vertically fixed to the top center of the slider (29). Several counterweights (31) are provided. A round hole is opened at the top center of the counterweight (31). Several counterweights (31) are stacked and sleeved on the positioning rod (30) through their round holes. The nut (32) is threaded to the positioning rod (30) and presses the topmost counterweight (31).

9. A curbstone transport tool according to claim 7, characterized in that: The movable counterweight assembly further includes: a slide rod (25), a limiting plate (26), a contact plate (27), and a compression spring (28). The slide rod (25), the limiting plate (26), the contact plate (27), and the compression spring (28) are all symmetrically arranged in two positions. The limiting baffle (24) has a sliding hole that runs through the front and back. The slide rod (25) is slidably connected in the sliding hole. The two ends of the slide rod (25) are respectively fixedly connected to the limiting plate (26) and the contact plate (27). The contact plate (27) is located between the two limiting baffles (24). The compression spring (28) is sleeved on the slide rod (25) and presses against the contact plate (27) and the limiting baffle (24) respectively.

10. A curbstone transport tool according to claim 1, characterized in that: Also includes: The boom (33) and foot plate (34) are provided. One end of the boom (33) is fixedly connected to the side of the cross arm (5) near the rear end, and the other end of the boom (33) is fixedly connected to the foot plate (34).

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