Vehicle-mounted forklift

Abstract

The truck-mounted forklift comprises a base, a bearing wheel mechanism and a first driving part, the bearing wheel mechanism comprises a fixing seat and walking supporting legs, the walking supporting legs are symmetrically and fixedly arranged on the fixing seat, the two walking supporting legs penetrate through limiting grooves respectively and extend to the outer side of the base, the first driving part is arranged on the base, and the first driving part is arranged on the base. The first driving piece drives the fixing base to move, so that the walking supporting legs move in the limiting grooves in the length direction of the limiting grooves. The first driving piece drives the bearing wheel mechanism to advance or retract with the frame as the center, manual pulling and pulling of the bearing wheel mechanism are avoided, the truck-mounted forklift can automatically go deep into a carriage or move out of the deep position of the carriage, potential safety hazards caused by manual operation are avoided, and the working efficiency of the truck-mounted forklift is improved. And the whole climbing process can be stable and uniform in speed through electric driving, and it is guaranteed that goods cannot be damaged.

Description

Technical Field

[0001] This utility model relates to the field of forklift technology, and in particular to a truck-mounted forklift. Background Technology

[0002] A truck-mounted forklift is a vehicle that travels alongside a delivery truck. It can unpile and move goods from pallets on the truck bed to a fixed location on the ground, or it can move and stack goods from pallets on the ground onto the truck bed. Truck-mounted forklifts can climb onto the truck bed, but when the truck-mounted forklift needs to go deep into the truck bed, the driver needs to manually pull out the load-bearing wheel mechanism to extend and retract during the loading and unloading process to avoid the truck bed floor. For example, the authorization announcement number CN113860219B discloses a truck-mounted cargo loading and unloading forklift and its working method, which describes "manually pulling the third handle outward to slide the support rod out so that the end of the support rod does not exceed the front side of the main frame, pressing the lower button again, the main frame continues to move upward, when the fork arm reaches the lowest point of the main frame, releasing the lower button and pushing the support rod inward to make the support wheel contact the truck bed, then pressing the upper button again, the fork arm lifts the goods and separates them from the truck bed by a small distance, holding the second handle to push the forklift into the truck bed, so that the goods are placed in a suitable position, and at the same time the forklift completes the loading action".

[0003] This process requires the driver to operate the lifting mechanism back and forth and manually pull the support rod, which consumes a lot of the driver's physical strength and is extremely inconvenient to operate.

[0004] Secondly, the driver needs to hold the second handle and push the forklift into the truck bed to allow the drive wheels to enter the truck bed. However, due to the weight of the forklift itself, manually pulling the forklift into or out of the truck bed is time-consuming and laborious. During the process of getting on and off the truck, due to improper operation and unstable vehicle, the forklift often tipped over from the truck, posing a great safety hazard to the operator. Utility Model Content

[0005] The purpose of this utility model is to provide a truck-mounted forklift to solve the problems in the prior art. The load-bearing wheel mechanism can automatically extend and retract, and can drive the drive wheel mechanism into the truck bed, realizing fully automatic climbing of the truck-mounted forklift, reducing manpower and lowering work risks.

[0006] This utility model provides a truck-mounted forklift, comprising:

[0007] A base, wherein symmetrical locating grooves are provided on the base;

[0008] The bearing wheel mechanism includes a fixed base and traveling legs. The traveling legs are symmetrically fixed on the fixed base, and the two traveling legs extend through the limiting groove to the outside of the base.

[0009] A first driving member is disposed on the base. The output end of the first driving member is connected to the fixed base. The first driving member drives the fixed base to move, thereby causing the walking leg to move along its length direction within the limiting groove.

[0010] In the forklift described above, preferably, each of the two outriggers is provided with a load-bearing wheel, and the fixed base is provided with a second drive member. The output end of the second drive member is connected to at least one of the load-bearing wheels, and the second drive member drives the load-bearing wheels to rotate.

[0011] In the forklift climbing mechanism described above, preferably, the first driving component includes an electric push rod and a first motor, the first motor is mounted on the base, the input end of the electric push rod is connected to the first motor, and the output end of the electric push rod is connected to the fixed base.

[0012] In the forklift described above, preferably, the second drive component includes an electromagnetic clutch, a first sprocket, a chain, a reducer, and a second motor, wherein: the electromagnetic clutch is disposed on one side of the bearing wheel, the side of the electromagnetic clutch opposite to the bearing wheel is connected to the sprocket, the reducer is disposed on the fixed base, the second motor is disposed on the reducer, the reducer includes a second sprocket, one end of the chain is connected to the first sprocket, and the other end of the chain passes through the limiting groove and is connected to the second sprocket.

[0013] In the forklift described above, preferably, an outer door frame is provided on the base, and a lifting mechanism is provided on the outer door frame.

[0014] In the forklift described above, preferably, the lifting mechanism includes a fork carriage and a lifting drive unit, the lifting drive unit being used to drive the fork carriage to move on the outer mast, and the size of the fork carriage being adapted to the outriggers.

[0015] In the forklift described above, preferably, drive wheel mechanisms are symmetrically arranged at the bottom of the base.

[0016] In the forklift described above, preferably, a controller is provided on the base, and the controller is electrically connected to the first drive member, the second drive member, the electromagnetic clutch, the lifting mechanism, and the drive wheel mechanism.

[0017] Compared with existing technologies, this utility model uses a first driving component to drive the load-bearing wheel mechanism to move forward or backward around the frame, avoiding manual pulling of the load-bearing wheel mechanism. A second driving component drives any load-bearing wheel to rotate, enabling the forklift to move forward or backward. This allows the drive wheel mechanism to be pulled into or out of the truck bed, making operation more labor-saving. This application allows the forklift to automatically enter or exit the truck bed, avoiding safety hazards associated with manual operation. Furthermore, the electric drive ensures a smooth and consistent climbing process, preventing damage to the goods. Attached Figure Description

[0018] Figure 1 This is a perspective view of the truck-mounted forklift provided in an embodiment of this utility model;

[0019] Figure 2 This is a top view of the first driving member driving the bearing wheel mechanism near the base provided in an embodiment of this utility model;

[0020] Figure 3 This is a top view of the first driving member driving the bearing wheel mechanism away from the base, provided in an embodiment of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 10 - Base, 11 - Limiting groove;

[0023] 20 - Fixed base, 21 - Traveling outrigger, 22 - Load-bearing wheel;

[0024] 30 – First motor; 31 – Electric actuator;

[0025] 40 - Electromagnetic clutch, 41 - First sprocket, 42 - Chain, 43 - Second sprocket, 44 - Reducer, 45 - Second motor.

[0026] 50 - Outer door frame; 51 - Fork carriage; 52 - Lifting drive unit;

[0027] 60 - Drive wheel mechanism;

[0028] 70 - Controller. Detailed Implementation

[0029] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] See Figure 1 As shown in Figure 3, this utility model provides a truck-mounted forklift, including a base 10, a load-bearing wheel mechanism, and a first drive component, wherein:

[0031] The base 10 has symmetrically formed limiting grooves 11. The bearing wheel mechanism includes a fixed base 20 and traveling legs 21. The traveling legs 21 are symmetrically fixed on the fixed base 20, and the two traveling legs 21 extend through the limiting grooves 11 to the outer side of the base 10. In the embodiment provided in this application, the limiting grooves 11 can connect the bearing wheel mechanism to the base 10. When the bearing wheel mechanism is moved, the limiting grooves 11 also have a certain guiding function, so that the traveling legs 21 move within the limiting grooves 11 to prevent deviation.

[0032] The first driving component is mounted on the base 10. The output end of the first driving component is connected to the fixed seat 20. The first driving component fixed seat 20 moves, thereby causing the walking support leg 21 to move along its length direction within the limiting groove 11. During loading and unloading, the truck-mounted forklift needs to move the load-bearing wheel mechanism back and forth relative to the base 10 to avoid the truck bed. The first drive unit is fixed on the base 10, and the output end of the first drive unit is connected to the fixed seat 20. When the truck-mounted forklift is in motion, the front end of the outrigger 21 is away from the base 10, and the fixed seat 20 is close to the base 10. During loading and unloading, the first drive unit drives the fixed seat 20 to move, and the outrigger 21 moves along the length of the outrigger 21 in the limiting groove 11, so that the front end of the outrigger 21 moves from away from the base 10 to close to the base 10, or from close to the base 10 to away from the base 10, thereby avoiding the truck bed. The first drive unit drives the load-bearing wheel mechanism to move, eliminating the tediousness of manual pulling, saving time and effort.

[0033] After the load-bearing wheel mechanism enters the truck bed, if the truck-mounted forklift needs to enter or descend from inside the truck bed, it is necessary to manually push the truck-mounted forklift to move the drive wheel mechanism 60 into or out of the truck bed. Since the truck-mounted forklift is quite heavy, manual pulling poses operational risks. In this application, each of the two outriggers 21 is equipped with a load-bearing wheel 22, and a second drive unit is provided on the fixed base 20. The output end of the second drive unit is connected to at least one load-bearing wheel 22, and the second drive unit drives the load-bearing wheel 22 to rotate. By driving at least one load-bearing wheel 22 to rotate through the second drive unit, the load-bearing wheel 22 can move forward or backward, thereby bringing the drive wheel mechanism 60 into or out of the truck bed. This greatly improves the flexibility of the truck-mounted forklift in loading and unloading scenarios, eliminates the need for manual pushing, reduces the labor intensity of operators, and improves work efficiency. Furthermore, since the horizontal plane of the lowest end of the base 10 is higher than the horizontal plane of the lowest end of the bearing wheel 22, when the bearing wheel mechanism moves to the front end of the traveling leg 21 and approaches the base 10, the traveling leg 21 will not disengage from the limiting groove 11. However, in order to better avoid the car floor, the bottom of the base 10 can be recessed inward so that at least part of the traveling leg 21 and the bearing wheel 22 can move into the base 10. The specific structure is not limited here.

[0034] In one possible implementation, see [link to implementation details].Figure 2 As shown in Figure 3, the first driving component includes an electric push rod 31 and a first motor 30. The first motor 30 is mounted on the base 10. The input end of the electric push rod 31 is connected to the first motor 30, and the output end of the electric push rod 31 is connected to the fixed seat 20. The first motor 30 can be fixed in the middle or near the edge of the base 10. In the embodiment provided in this application, the first motor 30 is fixed near the edge of the base 10. The electric push rod 31 pushes the fixed seat 20, which can drive the two walking legs 21 to move simultaneously. The electric push rod 31 has high positioning accuracy and can accurately control the moving distance and position of the fixed seat 20 according to actual needs. The first motor 30 can accurately adjust the extension and retraction of the electric push rod 31 according to preset parameters, so that the bearing wheel mechanism accurately reaches the designated position. In addition, the first driving component can also be a cylinder or other transmission mechanism, as long as the output end has the function of linear reciprocating motion, which is not limited here.

[0035] In one possible implementation, see [link to implementation details]. Figure 2 As shown in Figure 3, the second driving component includes an electromagnetic clutch 40, a first sprocket 41, a chain 42, a reducer 44, and a second motor 45. The electromagnetic clutch 40 is located on one side of the bearing wheel 22, and the side of the electromagnetic clutch 40 opposite to the bearing wheel 22 is connected to the sprocket. The reducer 44 is mounted on the fixed base 20, and the second motor 45 is mounted on the reducer 44. The reducer 44 includes a second sprocket 43. One end of the chain 42 is connected to the first sprocket 41, and the other end of the chain 42 passes through the limiting groove 11 and connects to the second sprocket 43. In the embodiment provided in this application, the second motor 45 serves as a power source and is directly mounted on the reducer 44, transmitting power to the reducer 44. The reducer 44 can reduce the rotational speed and increase the torque. The chain 42 is wound around the second sprocket 43 and the first sprocket 41, forming a transmission connection. The first sprocket 41 is connected to the electromagnetic clutch 40. When the electromagnetic clutch 40 is energized and engaged, the rotation of the first sprocket 41 drives the electromagnetic clutch 40 to rotate as well. The electromagnetic clutch 40 further transmits power to the load-bearing wheel 22, causing the load-bearing wheel 22 to start rotating. When the electromagnetic clutch 40 is de-energized and disengaged, the rotation of the first sprocket 41 is not transmitted to the load-bearing wheel 22, and the load-bearing wheel 22 stops rotating. The electromagnetic clutch 40 allows for flexible control of the rotation of the load-bearing wheel 22. When the forklift does not need the load-bearing wheel 22 to rotate, the power supply to the electromagnetic clutch 40 can be cut off to disconnect the load-bearing wheel 22 from the power transmission system, avoiding unnecessary rotation and improving operational flexibility and safety.

[0036] As a preferred method, see Figure 1As shown in Figure 3, the first and second driving components are not located on the same side. If the first driving component is located on the right side of the base 10, the second driving component is connected to the left-side bearing wheel 22. The purpose is that the first driving component is mainly used to drive the bearing wheel mechanism to move back and forth on the base 10, and the second driving component is used to drive the bearing wheel 22 to rotate. By arranging them on both sides, when the electric push rod 31 pushes the fixed seat 20, the chain 42 connected to the bearing wheel 22 on the other side can play a guiding and limiting role. The two driving systems can work together to make the device structure more stable. In addition, in order to allow the output end of the electric push rod 31 to be connected to the fixed seat 20, the gearbox can be installed on the fixed seat 20, and the horizontal arrangement of the first sprocket 41 and the second sprocket 43 connected by the chain 42 allows for corresponding adjustments to the shapes of the two traveling legs 21 and the fixed seat 20. The specific structure is not limited here.

[0037] In this embodiment, see Figure 1 As shown in Figure 3, an outer door frame 50 is provided on the base 10, and a lifting mechanism is provided on the outer door frame 50. The outer door frame 50 is used to install the lifting mechanism, which controls the lifting and lowering of goods. The lifting mechanism in this embodiment can be any type of existing technology.

[0038] Further, see Figure 1 As shown in Figure 3, the lifting mechanism includes a fork carriage 51 and a lifting drive unit 52. The lifting drive unit 52 is used to drive the fork carriage 51 to move on the outer door frame 50. The size of the fork carriage 51 is adapted to the traveling legs 21. The side of the fork carriage 51 facing the load-bearing wheel 22 is recessed inward to adapt to the shape of the traveling legs 21. The purpose is to fully cover the traveling legs 21 when the fork carriage 51 is lowered to its lowest point, thereby facilitating the pallet insertion and removal of goods.

[0039] Further, see Figure 2 As shown in Figure 3, a drive wheel mechanism 60 is provided at the bottom center of the base 10. The drive wheel mechanism 60 is used to drive the forklift to move or turn. The drive wheel mechanism 60 can be any of the prior art. In this embodiment, a single drive wheel mechanism is used. When the load-bearing wheel mechanism enters the truck bed, the drive wheel in the drive wheel mechanism 60 remains outside the truck bed. When it is necessary to move the drive wheel in or out, the forklift needs to be manually pulled. In this embodiment, the second drive member drives the load-bearing wheel 22 to rotate. The drive wheel is brought into or out of the truck bed by the forward and backward movement of the load-bearing wheel 22, thus avoiding the danger of manual operation.

[0040] See Figure 1As shown in Figure 3, a controller 70 is installed on the base 10. The controller 70 is electrically connected to the first drive unit, the second drive unit, the electromagnetic clutch 40, the lifting mechanism, and the drive wheel mechanism 60. By controlling each drive unit through the controller 70, precise control can be achieved, safety can be improved, work efficiency can be increased, and fault diagnosis can be facilitated.

[0041] Based on the above embodiments, the working process of this utility model is as follows:

[0042] 1. The forklift climbs from the ground into the truck bed:

[0043] The controller 70 controls the lifting mechanism to transport the goods to a height higher than the car body, drives the first motor 30 to drive the electric push rod 31 to push the fixed seat 20 away from the base 10, and the traveling legs 21 move in the limiting groove 11. When the carrying wheel 22 is close to the base 10, it stops and controls the lifting mechanism to continue to rise. When the lowest surface of the carrying wheel 22 is higher than the car body, the controller 70 drives the first motor 30 to drive the electric push rod 31 to retract, so that the fixed seat 20 is close to the base 10 and the traveling legs 21 move into the car body. During the movement, the electromagnetic clutch 40 is de-energized, so that the carrying wheel 22 cannot move. When the carrying wheel mechanism enters the car body, the electromagnetic clutch 40 is energized, and the controller 70 controls the second motor 45 to rotate forward. The carrying wheel 22 rotates under the action of the second motor 45, the reduction gearbox, the second sprocket 43, the chain 42, the first sprocket 41 and the electromagnetic clutch 40, thereby driving the drive wheel mechanism 60 into the car body.

[0044] 2. The forklift descends from inside the truck bed to the ground:

[0045] The controller 70 energizes the electromagnetic clutch 40 and reverses the second motor 45, causing the load-bearing wheel 22 to reverse, thus moving the forklift towards the edge of the truck bed until the drive wheel mechanism 60 leaves the truck bed. The controller 70 then disengages the electromagnetic clutch 40 and controls the first motor 30 to drive the electric push rod 31 to push the fixed seat 20 away from the base 10. The load-bearing wheel 22 stops when it approaches the base 10. The controller 70 then drives the lifting mechanism to lower the load-bearing wheel mechanism to near the lower surface of the truck bed and stops there. The controller 70 then drives the first motor 30 to retract the electric push rod 31 until the fixed seat 20 approaches the base 10 and stops there. The controller 70 then drives the lifting mechanism to continue descending until the load-bearing wheel mechanism and the drive wheel mechanism 60 reach the ground.

[0046] The above description, based on the embodiments shown in the drawings, details the structure, features, and effects of this utility model. The above description is only a preferred embodiment of this utility model, but the scope of implementation of this utility model is not limited to what is shown in the drawings. Any changes made in accordance with the concept of this utility model, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, shall be within the protection scope of this utility model.

Claims

1. A truck-mounted forklift, characterized in that, include: A base, wherein symmetrical locating grooves are provided on the base; The bearing wheel mechanism includes a fixed base and traveling legs. The traveling legs are symmetrically fixed on the fixed base, and the two traveling legs extend through the limiting groove to the outside of the base. A first driving member is disposed on the base. The output end of the first driving member is connected to the fixed base. The first driving member drives the fixed base to move, thereby causing the walking leg to move along its length direction within the limiting groove. Each of the two walking legs is provided with a bearing wheel, and the fixed base is provided with a second driving member. The output end of the second driving member is connected to at least one of the bearing wheels, and the second driving member drives the bearing wheel to rotate. The second driving component includes an electromagnetic clutch, a first sprocket, a chain, a reducer, and a second motor, wherein: the electromagnetic clutch is disposed on one side of the bearing wheel, the side of the electromagnetic clutch opposite to the bearing wheel is connected to the sprocket, the reducer is disposed on the fixed base, the second motor is disposed on the reducer, the reducer includes a second sprocket, one end of the chain is connected to the first sprocket, and the other end of the chain passes through the limiting groove and is connected to the second sprocket.

2. The forklift truck according to claim 1, characterized in that, The first driving component includes an electric push rod and a first motor. The first motor is mounted on the base. The input end of the electric push rod is connected to the first motor, and the output end of the electric push rod is connected to the fixed base.

3. The forklift truck according to claim 1, characterized in that, An outer door frame is provided on the base, and a lifting mechanism is provided on the outer door frame.

4. The forklift truck according to claim 3, characterized in that, The lifting mechanism includes a fork carriage and a lifting drive unit. The lifting drive unit is used to drive the fork carriage to move on the outer door frame. The size of the fork carriage is adapted to the traveling legs.

5. The forklift truck according to claim 3, characterized in that, A drive wheel mechanism is provided at the bottom center of the base.

6. The forklift truck according to claim 5, characterized in that, A controller is provided on the base, and the controller is electrically connected to the first drive member, the second drive member, the electromagnetic clutch, the lifting mechanism and the drive wheel mechanism respectively.

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