Damping tipping cart

Abstract

The utility model discloses a shock-absorbing tipping trolley, which relates to the technical field of trolleys and comprises a frame, wheels are rotatably mounted at the bottom of the frame, a bucket capable of tipping is mounted at the top of the frame, a handlebar is arranged at the rear end of the frame, shock-absorbing tail wheels with a shock-absorbing function are arranged at the rear end of the bucket, and the shock-absorbing tail wheels are in contact with the ground when the bucket is overturned for unloading. The damping tail wheels with the damping function are arranged at the rear end of the car hopper, so that when the car hopper is turned over, the damping tail wheels make contact with the ground, the impact force between the car hopper and the ground can be relieved through the damping effect, and the car hopper is protected to a certain degree; in addition, the damping tail wheels are in contact with the ground, so that sliding friction is changed into rolling friction in the bucket pulling process, the bucket pulling difficulty is lowered, the labor intensity is lowered, damage to the bucket due to friction between the bucket and the ground is avoided, and the service life of the bucket is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of handcarts, in particular to a shock-absorbing tipping handcart. Background Art

[0002] When the existing handcart is tipping for unloading, it is necessary to quickly raise one end of the handlebar of the handcart. Under the action of inertia and gravity, the cart body flips to achieve unloading. During the unloading process, in order to facilitate the discharge of goods, generally, the handcart is pulled backward while the cart body remains in the tipping state, so as to facilitate the discharge of goods.

[0003] In this tipping unloading method, the rapid flipping of the cart body causes a violent impact between the cart body and the ground, thereby causing certain damage to the cart body. In addition, when the cart body is in the tipping state and the handcart is pulled backward, the edge of the cart body will rub against the ground, which not only makes the operation of pulling the cart difficult and the labor intensity high, but also causes certain wear and damage to the cart body, reducing the service life of the cart body. Content of the Utility Model

[0004] The purpose of the utility model is to provide a shock-absorbing tipping handcart. By arranging a tail wheel at the rear end of the cart body, and the tail wheel is a shock-absorbing tail wheel, its shock-absorbing effect reduces the impact force when the cart body flips. The tail wheel contacts the ground, and during the process of pulling the cart body, the sliding friction is changed into rolling friction, thereby reducing the operation difficulty of pulling the cart, reducing the labor intensity, and at the same time improving the service life of the cart body.

[0005] In order to achieve the above purpose, the utility model provides a shock-absorbing tipping handcart, which includes a frame. Wheels are rotatably installed at the bottom of the frame, a cart body that can be tipped is installed at the top, and a handlebar is arranged at the rear end. A shock-absorbing tail wheel with a shock-absorbing function is arranged at the rear end of the cart body. When the cart body flips for unloading, the shock-absorbing tail wheel contacts the ground.

[0006] After adopting the above structure, by arranging a shock-absorbing tail wheel with a shock-absorbing function at the rear end of the cart body, when the cart body flips, the shock-absorbing tail wheel contacts the ground, and its shock-absorbing effect can resolve the impact force between the cart body and the ground, thereby forming a certain protection for the cart body. In addition, the shock-absorbing tail wheel contacts the ground, so during the process of pulling the cart body, the sliding friction is changed into rolling friction, thereby reducing the difficulty of pulling the cart body, reducing the labor intensity, and also avoiding damage to the cart body caused by the friction between the cart body and the ground, and improving the service life of the cart body.

[0007] In order to improve the shock absorption effect of the shock-absorbing tail wheel, the shock-absorbing tail wheel includes a wheel seat fixed on the truck bed and a caster assembly installed on the wheel seat; the wheel seat includes a mounting plate fixed on the truck bed and a support plate provided on the mounting plate and extending downward; there are two relatively arranged support plates, and the caster assembly is installed between the two support plates; the caster assembly includes a wheel frame and a caster rotatably installed on the wheel frame, and a shock-absorbing structure is provided between the wheel frame and the support plate; the shock-absorbing structure includes a connecting rod with one end hinged on the support plate and the other end hinged on the wheel frame and an elastic telescopic shaft provided between the mounting plate and the wheel frame; the elastic telescopic shaft includes a fixed sleeve provided at the bottom of the mounting plate and a sliding shaft slidably installed in the fixed sleeve with limited movement; the sliding shaft slides up and down and left and right in the fixed sleeve, and a return spring is sleeved outside the fixed sleeve and the sliding shaft.

[0008] In order to ensure the service life of the shock-absorbing tail wheel, a sliding hole is provided in the fixed sleeve. The sliding hole is a long hole, and its length direction is the rolling direction of the caster; a slider is fixed at the top of the sliding shaft, and the length of the slider is the same as the width of the sliding hole, so that the slider can slide in the length direction along the sliding hole and can also slide up and down along the sliding hole; a guiding hole is provided at the bottom of the fixed sleeve. The guiding hole is a linear hole, and its length direction is the same as that of the sliding hole. The width of the guiding hole is the same as the diameter of the sliding shaft and is smaller than the length of the slider, and the sliding shaft extends out from the guiding hole.

[0009] In order to improve the shock absorption effect of the shock-absorbing tail wheel, the slider is a rubber block.

[0010] In order to prevent dust from damaging the shock-absorbing tail wheel, a corrugated pipe is sleeved outside the elastic telescopic shaft.

[0011] In order to reduce the stress intensity on a single point of the truck bed and ensure the service life of the shock-absorbing tail wheel, a plurality of shock-absorbing tail wheels are evenly arranged along the width direction of the truck bed. A protective plate spanning the entire truck bed is fixed on the rear inclined surface of the truck bed, and the shock-absorbing tail wheels are fixed on the protective plate.

[0012] In order to improve the flexibility of the shock-absorbing tail wheel, the shock-absorbing tail wheel is a universal rotating shock-absorbing tail wheel.

[0013] In order to reduce the pressure on the shock-absorbing tail wheel and avoid friction between the rear end of the vehicle frame and the ground, a number of buffer wheels are installed at the rear end of the vehicle frame. When the truck bed is turned over for unloading, the buffer wheels contact the ground first.

[0014] In order to improve the buffer effect of the buffer wheels, the buffer wheels are fixedly installed at the bottom of the front end of the vehicle frame through buffer seats.

[0015] In order to reduce the pressure on a single buffer wheel, a plurality of buffer wheels are evenly arranged along the width direction of the vehicle frame.

[0016] After adopting the above technical solutions, the beneficial effects of the present utility model are:

[0017] The utility model relates to a shock-absorbing tipping wheelbarrow, which solves the technical problems in the prior art that when the tipping wheelbarrow tips, the car body collides violently with the ground, which is easy to damage the car body; at the same time, when tipping and unloading goods, it is difficult to pull the car body, and the labor intensity is high. The utility model is provided with a tail wheel at the rear end of the car body. The tail wheel is a shock-absorbing tail wheel, and its shock-absorbing effect reduces the impact force when the car body tips. When the tail wheel contacts the ground, during the process of pulling the car body, the sliding friction is changed into rolling friction, thereby reducing the operation difficulty of pulling the cart, reducing the labor intensity, and at the same time improving the service life of the car body. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of a shock-absorbing tipping wheelbarrow of the utility model;

[0019] Figure 2 is Figure 1 the schematic structural diagram of the shock-absorbing tipping wheelbarrow in the tipping state in ;

[0020] Figure 3 is Figure 2 the partial enlarged view of A in ;

[0021] Figure 4 is the schematic structural diagram of the shock-absorbing tail wheel;

[0022] Figure 5 is the schematic structural diagram of the shock-absorbing tail wheel (excluding the corrugated pipe);

[0023] Figure 6 is the schematic structural diagram of the fixed sleeve and the sliding shaft in the uninstalled state;

[0024] Figure 7 is Figure 6 the internal structural schematic diagram of the fixed sleeve and the sliding shaft in ;

[0025] Figure 8 is the schematic structural diagram of the buffer wheel and the buffer seat;

[0026] In the figure, 1, frame; 2, wheel; 3, car body; 31, protective plate; 32, buffer pad; 4, handlebar; 5, shock-absorbing tail wheel; 51, wheel seat; 511, mounting plate; 5111, fixing plate; 5112, rotating seat; 512, support plate; 52, caster assembly; 521, wheel frame; 522, caster; 53, shock-absorbing structure; 531, connecting rod; 532, fixed sleeve; 5321, sliding hole; 5322, guiding hole; 533, sliding shaft; 5331, slider; 534, return spring; 538, corrugated pipe; 6, buffer wheel; 7, buffer seat; 71, buffer bottom plate; 72, buffer plate; 73, telescopic rod; 74, buffer spring. Detailed Description of the Invention

[0027] The present utility model will be further described below in conjunction with the accompanying drawings.

[0028] All orientations mentioned in this specification are based on the orientation of a shock-absorbing tipping wheelbarrow of the present utility model during normal operation, without limiting its orientation during storage and transportation, only representing relative positional relationships and not absolute positional relationships.

[0029] As Figure 1 and Figure 2 collectively shown, a shock-absorbing tipping wheelbarrow includes a frame 1, wheels 2 rotatably installed at the bottom of the frame 1, a tipping bucket 3 installed at the top, and a handlebar 4 provided at the rear end. A shock-absorbing tail wheel 5 with a shock-absorbing function is provided at the rear end of the bucket 3, and when the bucket 3 is turned over for unloading, the shock-absorbing tail wheel 5 contacts the ground. When lowering the bucket, in order to avoid strong impact between the bucket 3 and the frame 1, a buffer pad 32 is attached to the contact position between the rear end of the bucket 3 and the frame 1.

[0030] As Figure 1 , Figure 2 , Figure 4 and Figure 5 collectively shown, the shock-absorbing tail wheel 5 can adopt the structure of a shock-absorbing tail wheel disclosed in Chinese Patent CN203185988 U, or other structures.

[0031] In this embodiment, the shock-absorbing tail wheel 5 includes a wheel seat 51 fixed to the bucket 3 and a caster assembly 52 installed on the wheel seat 51; the wheel seat 51 includes a mounting plate 511 fixed to the bucket 3 and a support plate 512 provided on the mounting plate 511 and extending downward; there are two relatively arranged support plates 512. The caster assembly 52 is installed between the two support plates 512. The caster assembly 52 includes a wheel frame 521 and a caster 522 rotatably installed on the wheel frame 521. A shock-absorbing structure 53 is provided between the wheel frame 521 and the support plate 512.

[0032] The shock-absorbing structure 53 includes a connecting rod 531 with one end hinged to the support plate 512 and the other end hinged to the wheel frame 521. Since there are two support plates 512, there are also two connecting rods 531, and the two connecting rods 531 are respectively located on both sides of the wheel frame 521.

[0033] The shock-absorbing structure 53 further includes an elastic telescopic shaft provided between the mounting plate 511 and the wheel frame 521. The elastic telescopic shaft includes a fixed sleeve 532 provided at the bottom of the mounting plate 511 and a sliding shaft 533 installed in the fixed sleeve 532 in a limited sliding manner. The inner diameter of the inner cylinder of the fixed sleeve 532 is larger than the diameter of the sliding shaft 533, so that the sliding shaft 533 can slide up and down and left and right (the left and right directions are along the rolling direction of the caster 522) in the fixed sleeve 532. A return spring 534 is sleeved outside the fixed sleeve 532 and the sliding shaft 533.

[0034] When the hopper 3 is turned over for unloading, under the action of inertia and gravity, the hopper 3 rotates backward around its hinge axis, and the caster 522 collides with the ground. Driven by the connecting rod 531, the caster 522 rotates obliquely upward, compressing the return spring 534. At the same time, the sliding shaft 533 slides obliquely upward away from the support plate 512 in the fixed sleeve 532. The elastic potential energy of the return spring 534 is consumed by the friction generated with the hinge axis under the swinging action of the connecting rod 531, thus achieving a shock absorption effect, avoiding hard collision between the hopper 3 and the ground and causing serious damage. At the same time, when the frame 1 is dragged backward while keeping the hopper 3 turned over, the shock-absorbing tail wheel 5 plays a front-end supporting role, avoiding friction between the hopper 3 and the ground and making it difficult to drag the frame 1, reducing the operation difficulty and labor intensity.

[0035] As Figure 6 and Figure 7 As shown jointly in

[0036] In order to ensure that the sliding shaft 533 slides more stably up and down and left and right in the fixed sleeve 532, a sliding hole 5321 is provided in the fixed sleeve 532. The sliding hole 5321 is a long hole, and its length direction is the rolling direction of the caster 522. A slider 5331 is fixed at the top of the sliding shaft 533, and the length of the slider 5331 is the same as the width of the sliding hole 5321. Thus, the slider 5331 can slide in the length direction along the sliding hole 5321 and can also slide up and down along the sliding hole 5321.

[0037] In order to prevent the slider 5331 from coming out of the sliding hole 5321, a guiding hole 5322 is provided at the bottom of the fixed sleeve 532. The guiding hole 5322 is a linear hole, and its length direction is the same as that of the sliding hole 5321. The width of the guiding hole 5322 is the same as the diameter of the sliding shaft 533 and is smaller than the length of the slider 5331. The sliding shaft 533 extends out from the guiding hole 5322, and the guiding hole 5322 restricts the sliding shaft 533 from sliding left and right along the guiding hole 5322. Preferably, the slider 5331 is made of rubber block, so that when sliding relative to the sliding hole 5321, friction is generated to consume the elastic potential energy and achieve a shock absorption effect.

[0037] In order to prevent dust from entering the elastic telescopic shaft, a corrugated pipe 538 is sleeved outside the elastic telescopic shaft. The upper end of the corrugated pipe 538 is arranged on the mounting plate 511, and the lower end is fixed on the wheel frame 521. The corrugated pipe 538 is made of flexible material and does not prevent its sliding up, down, left and right.

[0038] Furthermore, a plurality of shock-absorbing tail wheels 5 are evenly arranged along the width direction of the hopper 3, so that the collision between the hopper 3 and the ground is evenly dispersed to a plurality of shock-absorbing tail wheels 5, thereby increasing the stress points and reducing the local stress.

[0039] A protective plate 31 spanning the entire hopper 3 is fixed on the rear inclined surface of the hopper 3, and the shock-absorbing tail wheel 5 is fixed on the protective plate 31. Since the rear wall of the hopper 3 is a thin plate structure, when the shock-absorbing tail wheel 5 is stressed, it is easy to cause local damage to the hopper 3. Therefore, the shock-absorbing tail wheel 5 is fixed on the protective plate 31, and the protective plate 31 disperses the impact force to the entire rear side wall of the hopper 3, thereby reducing the local damage of the single-point impact force to the hopper 3 and improving the service life and strength of the hopper 3.

[0040] To improve the flexibility of the shock-absorbing tail wheel 5, the mounting plate 511 includes a fixed plate 5111 fixed on the hopper 3 and a rotating seat 5112 rotatably mounted on the fixed plate 5111, and the caster assembly 52 is fixedly mounted on the rotating seat 5112. By setting the mounting plate 511 into a rotatable structure, the caster assembly 52 is rotatably mounted on the mounting plate 511, which is convenient for steering during the dragging process and improves the flexibility of the shock-absorbing tail wheel 5.

[0041] As Figure 3 and Figure 8 As shown jointly in

[0042] A shock-absorbing tipping trolley of the present utility model solves the technical problems in the prior art that when the tipping trolley tips, the hopper violently impacts the ground, which is easy to damage the hopper; at the same time, when tipping and unloading, the difficulty of pulling the hopper is large and the labor intensity is high. The present utility model is provided with a tail wheel at the rear end of the hopper, and the tail wheel is a shock-absorbing tail wheel, with its shock-absorbing effect, reducing the impact force when the hopper tips, and the tail wheel contacts the ground, changing the sliding friction to rolling friction during the process of pulling the hopper, thereby reducing the operation difficulty of pulling the cart, reducing the labor intensity, and at the same time improving the service life of the hopper.

[0043] Certainly, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the substantial scope of the present utility model should also belong to the protection scope of the present utility model.

Claims

1. A shock-absorbing dump trolley, comprising a frame, a wheel rotatably mounted at the bottom of the frame, a dumpable bucket mounted at the top, and a handlebar at the rear end, characterized in that: A shock-absorbing tail wheel with a shock-absorbing function is arranged at the rear end of the truck bucket. When the truck bucket is overturned to unload, the shock-absorbing tail wheel contacts the ground.

2. A shock-absorbing dump truck according to claim 1, characterized in that: The shock-absorbing tail wheel comprises a wheel seat fixed on the truck bucket and a caster assembly mounted on the wheel seat; The wheel seat comprises a mounting plate fixed on the bucket and a support plate arranged on the mounting plate and extending downward; two support plates are arranged opposite to each other, and the caster assembly is installed between the two support plates; The caster assembly comprises a wheel frame and a caster rotatably mounted on the wheel frame, and a shock absorbing structure is arranged between the wheel frame and the support plate; The shock-absorbing structure includes a connecting rod with one end hinged on the support plate and the other end hinged on the wheel frame, and an elastic telescopic shaft arranged between the mounting plate and the wheel frame; the elastic telescopic shaft includes a fixed sleeve arranged at the bottom of the mounting plate and a sliding shaft installed in the fixed sleeve with limited sliding; the sliding shaft slides up and down and left and right in the fixed sleeve, and a return spring is provided on the outer side of the fixed sleeve and the sliding shaft.

3. A shock-absorbing dump truck according to claim 2, characterized in that: A sliding hole is arranged in the fixed sleeve, and the sliding hole is a long hole, and its length direction is the rolling direction of the caster; a slider is fixed on the top of the sliding shaft, and the length of the slider is consistent with the width of the sliding hole, so that the slider can slide along the sliding hole in the length direction and can slide up and down along the sliding hole; A guide hole is provided at the bottom of the fixed sleeve. The guide hole is a straight hole that is consistent with the length direction of the sliding hole. The width of the guide hole is the same as the diameter of the sliding shaft and is smaller than the length of the sliding block. The sliding shaft extends from the guide hole.

4. A shock-absorbing dump truck according to claim 3, characterized in that: The sliding block is a rubber block.

5. The shock-absorbing dump truck according to claim 3, characterized in that: The outer side cover of the elastic telescopic shaft is provided with a bellows.

6. The shock-absorbing dump truck according to claim 1, characterized in that: The shock-absorbing tail wheels are arranged in multiple numbers evenly along the width direction of the truck bucket, a protective plate spanning the entire truck bucket is fixed on the rear inclined surface of the truck bucket, and the shock-absorbing tail wheels are fixed on the protective plate.

7. The shock-absorbing dump truck according to claim 1, characterized in that: The shock-absorbing tail wheel is a universal rotating shock-absorbing tail wheel.

8. The shock-absorbing dump truck according to claim 1, characterized in that: A plurality of buffer wheels are installed at the rear end of the vehicle frame. When the vehicle bucket is overturned to unload goods, the buffer wheels first contact the ground.

9. The shock-absorbing dump truck according to claim 8, characterized in that: The buffer wheel is fixedly mounted on the bottom of the front end of the frame through a buffer seat.

10. The shock-absorbing dump truck according to claim 8, characterized in that: A plurality of buffer wheels are evenly arranged along the width direction of the frame.

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