A pallet forklift

Abstract

The utility model discloses a pallet forklift, which relates to the technical field of logistics and transportation equipment, and includes a base and a telescopic caster frame, and also includes a latch, wherein the top surface of the telescopic caster frame is provided with a plurality of plug holes, and the plurality of the plug holes are arranged at intervals along the length direction of the telescopic caster frame, and the base is provided with a through hole, and the bottom end of the latch passes through the through hole and is inserted into any of the plug holes. The utility model is a pallet forklift, which can limit the telescopic caster frame.

Description

Technical Field

[0001] The utility model relates to the technical field of logistics transportation equipment, in particular to a pallet forklift. Background Art

[0002] We often use pallet forklifts in daily logistics transportation. The existing pallet forklifts and their usage are: after shoveling the cargo with pallets into the carriage of the transport vehicle, lift the fork to place the cargo and pallet on the carriage board, then remove the fork, and then use the hand-pushed pallet truck placed in the carriage to move the cargo to the appropriate position in the carriage; after transporting to the destination, first use the hand-pushed pallet truck in the carriage to move the cargo to the edge of the carriage board, and then use the pallet forklift at the destination to unload the cargo and transport it to the appropriate position. In this way, three pallet forklifts will be needed to complete the cargo movement at different stages during the entire transportation process, and one pallet forklift must always be equipped in the carriage of the transport vehicle. Obviously, the utilization efficiency of each pallet forklift will be relatively low, and the equipment cost implied in the transportation process will also be relatively high.

[0003] The patent with announcement number CN102030286B discloses a manual self-lifting pallet forklift, which is a manual self-lifting pallet forklift that can be lifted and lowered together with the goods into the transport compartment. A series of logistics operations such as loading and unloading, compartment placement, and site transportation are completed by a pallet forklift. The manual self-lifting pallet forklift has a simple structure and can be easily operated entirely by hand, which reduces costs and simplifies transportation tools and operations.

[0004] However, it can be seen from its description and drawings that it does not have a limit assembly for limiting the telescopic caster frame, that is, when the pallet forklift moves forward, there is friction between the supporting casters and the ground, and the supporting casters exert a backward force on the telescopic caster frame. Therefore, it is more suitable for use on a flat ground. Once the ground becomes rough, the backward force will be greater than the friction between the telescopic caster frame and the slide groove, which will cause the telescopic caster frame to move backward relative to the column bracket, causing the pallet forklift to be unable to move normally.

[0005] Therefore, it is necessary to develop a pallet forklift for the above-mentioned defects. Utility Model Content

[0006] The utility model aims to provide a pallet forklift which can limit the position of a telescopic caster frame.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] The utility model discloses a pallet forklift, comprising a base and a telescopic caster frame, wherein two guide rails are symmetrically fixed on the top surface of the base, a first walking wheel is installed at the bottom end of each guide rail, a lifting fork is arranged on one side of the two guide rails, one end of the lifting fork is fixedly connected to a support frame, two sides of the support frame are rotatably connected with rollers matching the slide grooves of the guide rails, and the sides for setting the rollers are provided with at least two rollers at intervals up and down, the rollers are limited and can be rolled up and down in the slide grooves of the guide rails, through cavities are opened at both ends of the base, and the telescopic caster frame is slidably matched with the through cavities A U-shaped through groove is provided at one end of the lifting fork close to the base, and a second walking wheel is rotatably provided at one end of the telescopic caster frame close to the lifting fork. The telescopic caster frame has one end of the second walking wheel extending into the U-shaped through groove, and also includes a latch and a driving assembly. A plurality of plug holes are provided on the top surface of the telescopic caster frame, and the plurality of plug holes are arranged at intervals along the length direction of the telescopic caster frame. A through hole is provided on the base, and the bottom end of the latch passes through the through hole and is inserted into any of the plug holes; the driving assembly is installed on one side of the support frame and can drive the lifting fork to rise and fall.

[0009] Furthermore, a bending section is provided at the top end of the latch.

[0010] Furthermore, at least one fixing plate is fixed on one side of each guide rail, a guide hole is formed on the fixing plate, and the vertical section of the latch passes through the guide hole; the bent section at the top end of the latch is supported on the fixing plate.

[0011] Furthermore, it also includes a clamping plate, which is located on one side above the bending section and is fixedly connected to the guide rail.

[0012] Furthermore, a slot matching the bending section is formed on the top surface of the card plate.

[0013] Furthermore, it also includes a return spring, two of the fixed plates are arranged at intervals, a baffle is fixed on the vertical section of the latch located between the two fixed plates, the return spring is sleeved on the latch, the return spring is located between any of the fixed plates and the baffle and can provide a downward force to the latch.

[0014] Furthermore, the return spring is a tension spring, the top end of the return spring abuts against the higher fixed plate, and the bottom end of the return spring abuts against the baffle.

[0015] Furthermore, the return spring is a tension spring, the top end of the return spring is fixedly connected to the baffle, and the bottom end of the return spring is fixedly connected to the lower fixed plate.

[0016] Furthermore, the angle between the latch and the bending section is 90°.

[0017] Furthermore, the driving assembly includes a reduction motor and a rotating shaft, the reduction motor is fixedly connected to the support frame, the rotating shaft is horizontally arranged, the two rollers located on different sides are rotatably connected through the rotating shaft, a driven wheel is coaxially fixed on the rotating shaft, a driving wheel is fixedly connected to the output shaft of the reduction motor, and the driven wheel is connected to the driving wheel through a chain or a synchronous belt transmission; a rack is vertically fixed on one side of the notch of the slide groove of the guide rail, gears are fixed at both ends of the rotating shaft, the gears are located on the side of the corresponding roller close to the support frame, and the gears are meshed with the racks; a battery is provided on the base or the support frame, the battery is electrically connected to the reduction motor, and also includes a controller for controlling the reduction motor.

[0018] Compared with the prior art, the beneficial technical effects of the utility model are:

[0019] The utility model provides a pallet forklift, wherein the latch pin cooperates with the plug hole to limit the position of the telescopic caster frame, thereby preventing the telescopic caster frame from moving backward when the pallet forklift moves forward, thereby ensuring that the pallet forklift can move normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a schematic diagram of the three-dimensional structure of Example 1;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of Embodiment 1 from another angle;

[0023] Figure 3 It is a schematic diagram of the main structure of the support frame;

[0024] Figure 4 It is a schematic diagram of the exploded structure of the support frame and the lifting fork;

[0025] Figure 5 is a schematic diagram of the three-dimensional structure of Example 2;

[0026] Figure 6 is a schematic diagram of the three-dimensional structure of Example 3;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of Example 4.

[0028] Explanation of the reference numerals in the accompanying drawings: 1. base; 2. guide rail; 201. first traveling wheel; 202. rack; 3. lifting fork; 4. roller; 5. telescopic caster frame; 501. plug-in hole; 502. second traveling wheel; 6. support frame; 7. latch; 701. baffle; 8. fixing plate; 9. clamping plate; 10. return spring; 11. reduction motor; 12. rotating shaft; 13. driven wheel; 14. driving wheel; 15. gear. DETAILED DESCRIPTION

[0029] The core of the utility model is to provide a pallet forklift, which can limit the position of a telescopic caster frame.

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "middle", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0032] Example 1

[0033] The utility model and the pallet forklift in the patent cited in the background technology (CN102030286B) adopt basically the same structure. Figures 1 to 4 As shown, a brief introduction is given here: it includes a base 1 and a telescopic caster frame 5, two guide rails 2 are symmetrically fixed on the top surface of the base 1, and a first walking wheel 201 is installed at the bottom end of each guide rail 2, and a lifting fork 3 is arranged on one side of the two guide rails 2, and one end of the lifting fork 3 is fixedly connected to a support frame 6, and the support frame 6 is rotatably connected to rollers 4 matching the slide grooves of the guide rails 2 on both sides away from each other, and the sides for setting the rollers 4 are provided with at least two rollers 4 at intervals up and down, and the rollers 4 are limited and can roll up and down in the slide grooves of the guide rails 2, through cavities are opened at both ends of the base 1, and the telescopic caster frame 5 is slidably matched with the through cavity, and a U-shaped through groove which is transparent from top to bottom is opened at one end of the lifting fork 3 close to the base 1, and a second walking wheel 502 is rotatably arranged at one end of the telescopic caster frame 5 close to the lifting fork 3, and one end of the telescopic caster frame 5 with the second walking wheel 502 extends into the U-shaped through groove.

[0034] It should be noted that: in the utility model, the end of the telescopic caster frame 5 away from the second walking wheel 502 is commonly fixed with a plate body, and a U-shaped curved rod is fixedly connected to the plate body. The distance between the top surface of the U-shaped curved rod and the plate body is 30 to 60 cm. By operating the curved rod, the two telescopic caster frames 5 can be adjusted at the same time, and because the U-shaped curved rod has a certain height, the staff does not need to squat, which is convenient and quick.

[0035] The utility model also includes a latch 7 and a driving assembly. A plurality of plug holes 501 are provided on the top surface of the telescopic caster frame 5, and the plurality of plug holes 501 are arranged at intervals along the length direction of the telescopic caster frame 5. A through hole is provided on the base 1, and the bottom end of the latch 7 passes through the through hole and is inserted into any one of the plug holes 501. The driving assembly is installed on one side of the support frame 6 and can drive the lifting fork 3 to rise and fall.

[0036] Specifically, the pin 7 cooperates with the insertion hole 501 to limit the position of the telescopic caster frame 5, thereby preventing the telescopic caster frame 5 from moving backward when the pallet forklift moves forward, thereby ensuring that the pallet forklift can move normally.

[0037] The top end of the latch pin 7 is provided with a bending section.

[0038] Specifically, when adjusting the telescopic caster frame 5, the latch 7 is pulled out, and the bent section is convenient for the staff to hold, thereby facilitating the pulling out of the latch 7. The angle between the latch 7 and the bent section is 90° or other forms, such as a U-shape bent downward.

[0039] The driving assembly includes a reduction motor 11 and a rotating shaft 12. The reduction motor 11 is fixedly connected to the support frame 6. The rotating shaft 12 is horizontally arranged. The two rollers 4 located on different sides are rotatably connected through the rotating shaft 12. A driven wheel 13 is coaxially fixed on the rotating shaft 12. A driving wheel 14 is fixedly connected to the output shaft of the reduction motor 11. The driven wheel 13 and the driving wheel 14 are connected through a chain or a synchronous belt transmission; a rack 202 is vertically fixed on one side of the notch of the slide groove of the guide rail 2, and gears 15 are fixed at both ends of the rotating shaft 12. The gear 15 is located on the side of the corresponding roller 4 close to the support frame 6, and the gear 15 is meshed with the rack 202; a battery is provided on the base 1 or the support frame 6, and the battery is electrically connected to the reduction motor 11, and also includes a controller for controlling the reduction motor 11.

[0040] Specifically, the reduction motor 11 drives the driving wheel 14 to rotate, the driving wheel 14 drives the driven wheel 13 to rotate through a chain or a synchronous belt, the driven wheel 13 drives the rotating shaft 12 to rotate, the rotating shaft 12 drives the gear 15 to rotate, the gear 15 is meshed with the rack 202 for transmission, and the support frame 6 can be raised and lowered by adjusting the direction of the output shaft of the reduction motor 11, and the support frame 6 drives the lifting fork 3 to rise and fall. The battery and the controller are not shown in the drawings, wherein the controller can be a wireless controller or a wired controller, and the start and stop of the reduction motor and the direction of the output shaft of the reduction motor 11 are controlled by the controller.

[0041] Principle: The pin 7 cooperates with the plug hole 501 to limit the telescopic caster frame 5, preventing the telescopic caster frame 5 from moving backward when the pallet forklift moves forward, thereby ensuring that the pallet forklift can move normally.

[0042] Example 2

[0043] Embodiment 2 is implemented on the basis of embodiment 1, and the main difference is that the arrangement of the latch 7 is different.

[0044] like Figure 5 As shown:

[0045] The angle between the latch pin 7 and the bent section is 90°.

[0046] At least one fixing plate 8 is fixed to one side of each guide rail 2 . A guide hole is formed on the fixing plate 8 . The vertical section of the latch 7 passes through the guide hole. The bent section at the top of the latch 7 is supported on the fixing plate 8 .

[0047] Specifically, if the latch 7 in Embodiment 1 is separated from the plug hole 501 and placed aside or on the base 1, the latch 7 may be easily lost. In this embodiment, the latch 7 is limited by the fixing plate 8, so the latch 7 is not easily lost.

[0048] It also includes a clamping plate 9 , which is located on one side above the bending section and is fixedly connected to the guide rail 2 .

[0049] Specifically, when adjusting the telescopic caster frame 5, the pin 7 is disengaged from the plug-in hole 501, and the bent section is received on the clamping plate 9, thereby preventing the pin 7 from automatically inserting into the plug-in hole 501 under the action of its own gravity. During the adjustment process, there is no need to hold the pin 7 all the time, which is convenient and quick.

[0050] A slot matching the bending section is formed on the top surface of the clamping plate 9 .

[0051] Specifically, when adjusting the telescopic caster frame 5, the pin 7 comes out of the plug-in hole 501 and engages the bending section with the slot of the clamping plate 9; since vibration is inevitably generated when adjusting the telescopic caster frame 5, when the bending section is engaged with the slot, the pin 7 will not rotate at will, thereby preventing the bending section from being separated from the clamping plate 9 due to vibration, and the pin 7 is automatically inserted into the plug-in hole 501 under the action of its own gravity.

[0052] Principle: When adjusting the telescopic caster frame 5, the latch 7 is disengaged from the insertion hole 501, and the bent section is engaged with the slot of the clamping plate 9, thereby preventing the latch 7 from automatically inserting into the insertion hole 501 under the action of its own gravity, thereby facilitating the staff to adjust the telescopic caster frame 5.

[0053] Example 3

[0054] Embodiment 3 is implemented on the basis of embodiment 2, and the main difference is that the arrangement of the latch 7 is different.

[0055] like Figure 6 As shown:

[0056] It also includes a return spring 10, two of which are spaced apart on the fixing plates 8, a baffle 701 is fixed on the vertical section of the latch 7 between the two fixing plates 8, the return spring 10 is sleeved on the latch 7, the return spring 10 is located between any fixing plate 8 and the baffle 701 and can provide a downward force on the latch 7.

[0057] Specifically, the pallet forklift will inevitably vibrate when moving. Under the action of the vibration force, the latch 7 will jump, which may easily cause the latch 7 to separate from the plug hole 501. The action of the reset spring 10 can prevent the latch 7 from jumping.

[0058] The return spring 10 is a tension spring, the top end of the return spring 10 abuts against the higher fixed plate 8 , and the bottom end of the return spring 10 abuts against the baffle 701 .

[0059] Specifically, the tension spring provides a downward thrust to the baffle 701 , and the baffle 701 provides a downward thrust to the latch 7 .

[0060] Principle: The tension spring provides a downward thrust to the baffle 701 , and the baffle 701 provides a downward force to the latch 7 , thereby preventing the latch 7 from bouncing and ensuring that the latch 7 will not separate from the plug hole 501 .

[0061] Example 4

[0062] Embodiment 4 is implemented on the basis of embodiment 2, and the main difference is that the arrangement of the latch 7 is different.

[0063] like Figure 7 As shown:

[0064] It also includes a return spring 10, two of which are spaced apart on the fixing plates 8, a baffle 701 is fixed on the vertical section of the latch 7 between the two fixing plates 8, the return spring 10 is sleeved on the latch 7, the return spring 10 is located between any fixing plate 8 and the baffle 701 and can provide a downward force on the latch 7.

[0065] Specifically, the pallet forklift will inevitably vibrate when moving. Under the action of the vibration force, the latch 7 will jump, which may easily cause the latch 7 to separate from the plug hole 501. The action of the reset spring 10 can prevent the latch 7 from jumping.

[0066] The return spring 10 is a tension spring, the top end of the return spring 10 is fixedly connected to the baffle 701 , and the bottom end of the return spring 10 is fixedly connected to the lower fixed plate 8 .

[0067] Specifically, the tension spring provides a downward pulling force to the baffle 701 , and the baffle 701 provides a downward acting force to the latch 7 .

[0068] Principle: The tension spring provides a downward pulling force to the baffle 701, and the baffle 701 provides a downward force on the latch 7, thereby preventing the latch 7 from jumping and ensuring that the latch 7 will not separate from the plug hole 501.

[0069] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other, and the embodiments can be combined with each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0070] The above embodiments are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A pallet forklift, comprising a base (1) and a telescopic caster frame (5), wherein two guide rails (2) are fixedly arranged on the top surface of the base (1) at intervals, and a first walking wheel (201) is installed at the bottom end of each guide rail (2), and a lifting fork (3) is arranged on one side of the two guide rails (2), and one end of the lifting fork (3) is fixedly connected to a support frame (6), and rollers (4) matching the slide grooves of the guide rails (2) are rotatably connected to the two sides of the support frame (6) away from each other, and at least two of the side surfaces for setting the rollers (4) are arranged at intervals from top to bottom. The roller (4) is limited and can be rolled up and down in the slide groove of the guide rail (2), the base (1) has through cavities at both ends, the telescopic caster frame (5) is slidably matched with the through cavities, the lifting fork (3) is provided with a U-shaped through groove that is transparent from top to bottom at one end close to the base (1), the telescopic caster frame (5) is rotatably provided with a second walking wheel (502) at one end close to the lifting fork (3), and the telescopic caster frame (5) has one end of the second walking wheel (502) that extends into the U-shaped through groove, characterized in that: It also includes a latch (7) and a drive assembly, the top surface of the telescopic caster frame (5) is provided with a plurality of plug holes (501), and the plurality of plug holes (501) are arranged at intervals along the length direction of the telescopic caster frame (5), the base (1) is provided with a through hole, the bottom end of the latch (7) passes through the through hole and is inserted into any of the plug holes (501); the drive assembly is installed on one side of the support frame (6) and can drive the lifting fork (3) to rise and fall.

2. The pallet truck according to claim 1, characterized in that: The top end of the latch pin (7) is provided with a bending section.

3. The pallet truck according to claim 2, characterized in that: At least one fixing plate (8) is fixed to one side of each guide rail (2), and a guide hole is provided on the fixing plate (8), through which the vertical section of the latch (7) passes; and the bent section at the top end of the latch (7) is supported on the fixing plate (8).

4. The pallet truck according to claim 3, characterized in that: It also comprises a clamping plate (9), the clamping plate (9) being located on one side above the bending section, and the clamping plate (9) being fixedly connected to the guide rail (2).

5. The pallet truck according to claim 4, characterized in that: The top surface of the clamping plate (9) is provided with a clamping groove matching the bending section.

6. The pallet truck according to claim 5, characterized in that: It also includes a return spring (10), two of the fixing plates (8) are arranged at intervals, a baffle (701) is fixed on the vertical section of the latch (7) between the two fixing plates (8), the return spring (10) is sleeved on the latch (7), the return spring (10) is located between any of the fixing plates (8) and the baffle (701) and can provide a downward force on the latch (7).

7. The pallet truck according to claim 6, characterized in that: The return spring (10) is a tension spring, the top end of the return spring (10) abuts against the higher fixed plate (8), and the bottom end of the return spring (10) abuts against the baffle (701).

8. The pallet truck according to claim 6, characterized in that: The return spring (10) is a tension spring, the top end of the return spring (10) is fixedly connected to the baffle (701), and the bottom end of the return spring (10) is fixedly connected to the lower fixed plate (8).

9. The pallet truck according to any one of claims 2 to 8, characterized in that: The angle between the latch pin (7) and the bent section is 90°.

10. The pallet truck according to claim 1, characterized in that: The driving assembly comprises a reduction motor (11) and a rotating shaft (12), wherein the reduction motor (11) is fixedly connected to the support frame (6), the rotating shaft (12) is arranged horizontally, and the two rollers (4) located on different sides are rotatably connected via the rotating shaft (12), a driven wheel (13) is coaxially fixed on the rotating shaft (12), a driving wheel (14) is fixedly connected to the output shaft of the reduction motor (11), and the driven wheel (13) and the driving wheel (14) are connected via a chain or a synchronous belt drive. A rack (202) is vertically fixed on one side of the notch of the slide groove of the guide rail (2), and gears (15) are fixed on both ends of the rotating shaft (12), and the gears (15) are located on the side of the corresponding roller (4) close to the support frame (6), and the gears (15) are meshed with the rack (202); a battery is provided on the base (1) or the support frame (6), and the battery is electrically connected to the reduction motor (11), and also includes a controller for controlling the reduction motor (11).

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