A hydraulic pallet truck with adjustable fork spacing

Abstract

The present invention provides a hydraulic pallet truck with adjustable fork spacing, comprising a truck body and a fork assembly, wherein the truck body comprises a main body welded part shell, two slider welded parts, and a threaded screw, wherein a C-shaped channel steel is welded and fixed to the inner side of the main body welded part shell, wherein the C-shaped channel steel is fixedly connected to a front slide rail, wherein the slider welded part cooperates with the front slide rail slider rail to slide left and right in the horizontal direction, wherein the lower surface of the tail of the slider welded part and the upper surface of the rear slide rail abut and cooperate with each other, wherein a raised cylinder is arranged on the slider welded part, wherein the cylinder is located in the U-shaped notch of the movable bell block and forms a movable joint mechanism through bolts and large washers; wherein the fork assembly is detachably and fixedly connected to the slider welded part through multiple groups of bolts. The present invention can solve the problems of inconvenient spacing adjustment of the two forks of the truck in the prior art and weak load capacity in the structure.

Description

Technical Field

[0001] The invention relates to the technical field of handling equipment, in particular to a hydraulic pallet transporter with adjustable fork spacing. Background Art

[0002] The forks of conventional hydraulic pallet trucks are fixed, but the pallets used to package or transport goods in factories may have many different specifications, so it is necessary to equip several pallet trucks with different fork width specifications to meet actual use requirements.

[0003] Most of the existing similar products have fork adjustment mechanisms that are external, which are easily damaged by collision during use or transportation, and the appearance is not simple and beautiful.

[0004] Since the load-bearing components of the adjustable fork structure are all movable, the load capacity is relatively weak compared to the fixed fork. Therefore, the load capacity of the existing adjustable fork trucks is weak, generally around 1T.

[0005] In order to reduce transportation costs, most of the existing adjustable forklifts are designed with detachable forks, which require customers to assemble before use. Since the fork adjustment mechanism is not independent and is designed on the main body and the fork respectively, when the customer assembles, the fork adjustment mechanism takes a long time to debug, which is inconvenient and difficult to adjust. Summary of the invention

[0006] The invention provides a hydraulic pallet transporter with adjustable fork spacing, so as to solve the problems of inconvenient spacing adjustment between two forks of the transporter in the prior art and weak structural load capacity.

[0007] In order to solve the above technical problems, the present invention provides a hydraulic pallet truck with adjustable fork spacing, including a truck body and a fork assembly. The truck body includes a main body welded part shell, two slider welded parts, and a threaded screw. A C-shaped channel steel is welded and fixed to the inner side of the main body welded part shell, and the C-shaped channel steel is fixedly connected to a front slide rail. The slider welded part cooperates with the front slide rail and the slider rail to slide left and right in the horizontal direction. The lower surface of the tail of the slider welded part and the upper surface of the rear slide rail abut against each other. Both ends of the threaded screw are installed on the inner side of the main body welded part shell through a bearing seat assembly. The threaded screw is respectively provided with left-handed threads and right-handed threads from the middle to both ends. The left-handed threads and right-handed threads of the threaded screw are respectively connected to the threads of the two bell blocks In coordination, a U-shaped groove is provided on the paddle of the active bell selector block, and a raised cylinder is provided on the slider weldment, the cylinder is located in the U-shaped groove of the active bell selector block and forms a movable joint mechanism through bolts and large gaskets; the fork assembly comprises a fork and a pull rod weldment, the pull rod weldment is located in the fork, a force plate is fixedly installed on one end of the pull rod weldment, the other end of the pull rod weldment is connected to the front wheel assembly through a pull rod pin, the front wheel assembly is rotatably mounted on the fork through the front wheel assembly pin, the fork assembly is detachably fixedly connected to the slider weldment through multiple sets of bolts, a swing arm mechanism is installed in the main body of the transport vehicle, the swing arm mechanism is rotatably mounted on the outer shell of the main body weldment through a long axis, and the swing arm mechanism abuts against the force plate.

[0008] The swing arm mechanism includes a swing arm main bracket, two small rollers, two medium-long rollers, a long roller, and a long wheel shaft. The small rollers, medium-long rollers, and long rollers are rotatably installed on the swing arm main bracket through the long wheel shaft. The small rollers, medium-long rollers, and long rollers are in contact with the force plate.

[0009] Both ends of the long wheel shaft are provided with retaining springs.

[0010] One end of the threaded screw is mounted with a crank assembly via an elastic cylindrical pin.

[0011] The tie rod welding piece is connected to the front wheel assembly via a threaded fork joint, and the threaded fork joint controls and adjusts the connection distance between the tie rod welding piece and the front wheel assembly.

[0012] A bearing is also installed at one end of the pull rod welding piece where the force plate is installed, and the bearing rolls on the fork.

[0013] A scale is provided on the outer shell of the main weldment, and the scale is located above the fork.

[0014] Beneficial effects brought by the present invention: The hydraulic pallet truck with adjustable fork spacing of the present invention can realize synchronous adjustment of the two forks by connecting the two forks with two sets of positive and negative threads on a screw rod, and is suitable for pallets of various specifications and goods of different sizes, with convenient adjustment, simple structure, and reduced manufacturing difficulty and cost;

[0015] The main body of the transporter and the fork assembly are separated for transportation, which saves transportation space and is convenient for transportation;

[0016] The adjustment mechanisms such as threaded screw, bell block, and slider weldment are set in the main weldment shell, which is not easy to be damaged by knocks. Before transportation, you only need to disassemble and separate the adjustment mechanism from the fork assembly, and the adjustment mechanism part does not need to be disassembled. In the later stage, the customer does not need to assemble and debug the adjustment mechanism. The customer only needs to dock and assemble the truck body and the fork assembly. The customer assembly and adjustment are simple and convenient;

[0017] The forks extend into the main body of the transporter and are connected to the adjustment mechanism, distributing the force on the front and rear rails of the main body of the transporter. The spacing between the forks can be easily adjusted, and the overall load capacity of the transporter is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 2 is a schematic diagram of the overall structure of a hydraulic pallet truck with adjustable fork spacing according to the present invention;

[0019] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0020] Figure 3 is a schematic diagram of a transport vehicle body according to the present invention;

[0021] Figure 4 is a schematic diagram of a fork assembly according to the present invention;

[0022] Figure 5 is a schematic structural diagram of a fork assembly and a swing arm mechanism according to the present invention;

[0023] Figure 6 is a front view of a hydraulic pallet truck with adjustable fork spacing according to the present invention;

[0024] Figure 7 is a schematic diagram of the minimum spacing of the forks of a hydraulic pallet truck with adjustable fork spacing according to the present invention;

[0025] Figure 8 is a schematic diagram of assembling a fork assembly and a transport vehicle body according to the present invention;

[0026] Among them, 1-main body welded part shell, 2-slider welded part, 3-threaded screw, 4-C-type channel steel, 5-front slide rail, 6-rear slide rail, 7-bearing seat assembly, 8-bell block, 9-fork, 10-pull rod welded part, 11-load plate, 12-front wheel assembly, 13-front wheel assembly pin, 14-swing arm mechanism, 15-swing arm main bracket, 16-small roller, 17-medium and long roller, 18-long roller, 19-long wheel shaft, 20-crank assembly, 21-threaded fork joint, 22-bearing, 23-scale ruler, 24-pull rod pin, 25-long shaft. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments.

[0028] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] like Figure 1-6As shown, the embodiment of the present invention provides a hydraulic pallet truck with adjustable fork spacing, including a truck body and a fork assembly. The truck body includes a main body welded component shell 1, two slider welded components 2, and a threaded screw 3. A C-shaped channel steel 4 is welded and fixed to the inner side of the main body welded component shell 1. The C-shaped channel steel 4 is fixedly connected to the front slide rail 5 by a hexagonal flat head bolt. The slider welded component 2 cooperates with the front slide rail 5 and the slider slide rail to slide left and right in the horizontal direction. The lower surface of the tail of the slider welded component 2 and the upper surface of the rear slide rail 6 abut against each other. Both ends of the threaded screw 3 are installed on the inner side of the main body welded component shell 1 through a bearing seat assembly 7. The threaded screw 3 is respectively provided with left-handed threads and right-handed threads from the middle to both ends. The left-handed threads and right-handed threads of the threaded screw 3 are respectively threadedly matched with two active bell blocks 8. The paddle of the active bell block 8 is provided with a U-shaped notch, and a raised cylindrical portion is provided on the slider welded component 2. The cylinder is located in the U-shaped groove of the active bell block 8 and is composed of a movable joint mechanism through bolts and large gaskets, so that over-positioning will not occur, so that when the slider weldment 2 follows the active bell block 8, there will be no jamming or jamming; the fork assembly includes a fork 9 and a pull rod weldment 10, and the pull rod weldment 10 is arranged in the fork 9, and the pull rod weldment 10 moves along the length direction of the fork 9. One end of the pull rod weldment 10 is fixedly installed with a force plate 11, and the other end of the pull rod weldment 10 is connected to the front wheel assembly 12 through a pull rod pin 24, and the front wheel assembly 12 is rotatably installed on the fork 9 through the front wheel assembly pin 13. The fork assembly is detachably fixedly connected to the slider weldment 2 through multiple sets of bolts, and a swing arm mechanism 14 is installed in the main body of the transport vehicle, and the swing arm mechanism 14 is rotatably installed on the main body weldment shell 1 through a long axis 25, and the swing arm mechanism 14 abuts against the force plate 11.

[0030] Further, if Figure 5 The swing arm mechanism 14 includes a swing arm main bracket 15, two small rollers 16, two medium-long rollers 17, a long roller 18, and a long wheel shaft 19. The small roller 16, the medium-long roller 17, and the long roller 18 are rotatably mounted on the swing arm main bracket 15 through the long wheel shaft 19. When adjusting the distance between the two forks 9, the force plate 11 abuts against the small roller 16, the medium-long roller 17, and the long roller 18.

[0031] Furthermore, both ends of the long wheel shaft 19 are provided with retaining springs.

[0032] Furthermore, a crank assembly 20 is mounted on one end of the threaded screw 3 via an elastic cylindrical pin.

[0033] Specifically, the tie rod weldment 10 is connected to the front wheel assembly 12 via a threaded fork joint 21 , and the threaded fork joint 21 fine-tunes the connection distance between the tie rod weldment 10 and the front wheel assembly 12 .

[0034] Furthermore, a bearing 22 is also installed at one end of the pull rod weldment 10 on which the force plate 11 is installed, and the bearing 22 rolls on the fork 9 .

[0035] Furthermore, a scale ruler 23 is stamped out on the main welded part housing 1, and the scale ruler 23 is located above the fork 9. The scale ruler 23 is used to visually control the distance between the two forks 9.

[0036] like Figure 8 The truck body and the fork assembly are transported separately and assembled after arriving at the destination. The force plate 11 is installed on the pull rod weldment 10, and the truck body and the fork assembly are docked so that the force plate 11 abuts against the small roller 16, the medium and long roller 17, and the long roller 18. The fork 9 and the slider weldment 2 are fixedly connected by a combination of multiple groups of bolts, spring washers, and flat washers.

[0037] like Figure 7 The hand crank assembly 20, the screw rod 3 rotates forward, so that the distance between the two bell blocks 8 is reduced, the distance between the two slider welded parts 2 sliding on the front slide rail 5 is reduced, and then the distance between the two forks 9 is reduced; the hand crank assembly 20, the screw rod 3 rotates backward, so that the distance between the two bell blocks 8 is expanded, and then the distance between the two forks 9 is expanded. According to the different sizes of goods or the distance between the two fork sockets, the distance between the two forks 9 is adjusted.

[0038] like Figure 6 , control the swing arm mechanism 14 to rotate counterclockwise around the long axis 25, so that the swing arm mechanism 14 moves to the right against the force plate 11 and the pull rod welding part 10, and then the front wheel assembly 12 rotates counterclockwise around the front wheel assembly pin 13, increasing the distance between the front wheel assembly pin 13 and the ground, thereby expanding the distance between the fork 9 and the ground; on the contrary, control the swing arm mechanism 14 to rotate clockwise around the long axis 25, thereby reducing the distance between the fork 9 and the ground.

[0039] When the fork 9 is loaded with goods, one end of the fork 9 is the front wheel assembly 12 for load bearing, and the other end of the fork 9 is the sliding cooperation of the slider welding part 2 and the front slide rail 5 for load bearing, and the sliding welding part 2 and the rear slide rail 6 for load bearing. While the spacing between the forks 9 is convenient to adjust, the overall load capacity is strong.

[0040] In summary, the hydraulic pallet truck with adjustable fork spacing of the present invention can realize synchronous adjustment of the two forks by connecting the two forks with two sets of positive and negative threads on a screw rod, and is suitable for pallets of various specifications and goods of different sizes. It is easy to adjust, has a simple structure, and has reduced manufacturing difficulty and cost.

[0041] The main body of the transporter and the fork assembly are separated for transportation, which saves transportation space and is convenient for transportation;

[0042] The adjustment mechanisms such as threaded screw, bell block, and slider weldment are set in the main weldment shell, which is not easy to be damaged by knocks. Before transportation, you only need to disassemble and separate the adjustment mechanism from the fork assembly, and the adjustment mechanism part does not need to be disassembled. In the later stage, the customer does not need to assemble and debug the adjustment mechanism. The customer only needs to dock and assemble the truck body and the fork assembly. The customer assembly and adjustment are simple and convenient;

[0043] The forks extend into the main body of the transporter and are connected to the adjustment mechanism, distributing the force on the front and rear rails of the main body of the transporter. The spacing between the forks can be easily adjusted, and the overall load capacity of the transporter is strong.

[0044] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A hydraulic pallet truck with adjustable fork spacing, comprising a truck body and a fork assembly, characterized in that: The transport vehicle body comprises a main body welded component shell (1), two slider welded components (2), and a threaded screw (3). A C-shaped channel steel (4) is welded and fixed on the inner side of the main body welded component shell (1). The C-shaped channel steel (4) is fixedly connected to a front slide rail (5). The slider welded component (2) cooperates with the front slide rail (5) and the slider slide rail to slide left and right in the horizontal direction. The lower surface of the tail of the slider welded component (2) and the upper surface of the rear slide rail (6) are mutually abutted and matched. The two ends of the threaded screw (3) are installed on the inner side of the main body welded component shell (1) through a bearing seat assembly (7). The threaded screw (3) is respectively provided with a left-handed thread and a right-handed thread from the middle to the two ends. The left-handed thread and the right-handed thread of the threaded screw (3) are respectively threadedly matched with two active bell blocks (8). The paddle of the active bell block (8) is provided with a U-shaped notch. A raised cylinder, the cylinder is located in the U-shaped groove of the movable bell block (8) and forms a movable joint mechanism through bolts and large washers; the fork assembly includes a fork (9) and a pull rod welded component (10), the pull rod welded component (10) is located in the fork (9), one end of the pull rod welded component (10) is fixedly installed with a force plate (11), the other end of the pull rod welded component (10) is connected to the front wheel assembly (12) through a pull rod pin (24), the front wheel assembly (12) is rotatably mounted on the fork (9) through the front wheel assembly pin (13), the fork assembly is detachably fixedly connected to the slider welded component (2) through multiple groups of bolts, a swing arm mechanism (14) is installed in the main body of the transport vehicle, the swing arm mechanism (14) is rotatably mounted on the main body welded component shell (1) through a long axis (25), and the swing arm mechanism (14) abuts against the force plate (11).

2. The hydraulic pallet truck with adjustable fork spacing as claimed in claim 1, characterized in that: The swing arm mechanism (14) comprises a swing arm main support (15), two small rollers (16), two medium-long rollers (17), a long roller (18), and a long wheel shaft (19); the small rollers (16), the medium-long rollers (17), and the long rollers (18) are rotatably mounted on the swing arm main support (15) via the long wheel shaft (19); and the small rollers (16), the medium-long rollers (17), and the long rollers (18) abut against the force-bearing plate (11).

3. The hydraulic pallet truck with adjustable fork spacing as claimed in claim 2, characterized in that: Both ends of the long wheel shaft (19) are provided with retaining springs.

4. The hydraulic pallet truck with adjustable fork spacing as claimed in claim 1, characterized in that: One end of the threaded screw rod (3) is mounted with a crank assembly (20) via an elastic cylindrical pin.

5. The hydraulic pallet truck with adjustable fork spacing as claimed in claim 1, characterized in that: The tie rod welding piece (10) is connected to the front wheel assembly (12) via a threaded fork joint (21), and the threaded fork joint (21) controls and adjusts the connection distance between the tie rod welding piece (10) and the front wheel assembly (12).

6. The hydraulic pallet truck with adjustable fork spacing as claimed in claim 1, characterized in that: A bearing (22) is also installed at one end of the pull rod welding piece (10) on which the force plate (11) is installed, and the bearing (22) rolls on the fork (9).

7. The hydraulic pallet truck with adjustable fork spacing as claimed in claim 1, characterized in that: The main welded component housing (1) is provided with a scale ruler (23), and the scale ruler (23) is located above the fork (9).

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