Forklift arm with push-pull function

Abstract

The utility model discloses a forklift arm with a push-pull function, and relates to the field of forklift equipment, the forklift arm comprises a pallet fork, and a pallet fork frame further comprises a shifting block arranged at the front end of the pallet fork and a driving assembly for controlling the shifting block to ascend and descend. In order to solve the problem that when an existing heat treatment furnace is too long, a common forklift cannot take out a charging tray from a deeper position, under the condition that the height of a forklift arm is not adjusted, a driving component drives a shifting block to ascend and descend so that the shifting block can play two different functions of pushing or hooking, and the practicability is high. And the pallet forks push the trays into the deep part of the heat treatment furnace or pull the trays out of the deep part of the heat treatment furnace. The tray position can be adjusted as required, and the efficiency of the working space of the heat treatment furnace is improved.

Description

Technical Field

[0001] The present application relates to the field of forklift equipment with a material delivery fork, and in particular to a forklift arm with a pushing and pulling function. Background Art

[0002] Heat treatment refers to a metal hot working process in which materials are heated, held at a constant temperature, and cooled in the solid state to obtain the desired microstructure and properties. A heat treatment furnace refers to an electric furnace or a fuel furnace used for heating furnace charges for heat treatment. Workpieces are placed in the heat treatment furnace for heat treatment. In order to make the surface of the workpiece uniformly heated, the workpiece is generally placed on a hollowed-out tray, and then the tray with the workpiece is transferred to the heat treatment furnace.

[0003] In the related art, due to the large weight of the workpiece and the tray, a forklift is generally used to transfer the tray to the heat treatment furnace. When the length of the heat treatment furnace is relatively long, multiple trays or customized extra-long trays are required. The cost of customizing extra-long trays is relatively high, and when multiple trays are placed in the heat treatment furnace in sequence, it is difficult to pick up and place the tray located in the innermost part of the furnace body by a forklift.

[0004] In view of the above related art, in order to smoothly pick up and place the tray by a forklift, the applicant designed a forklift arm with a pushing and pulling function. Utility Model Content

[0005] In order to solve the problem that when the length of the heat treatment furnace is relatively long, multiple trays cannot be placed deep inside or taken out, the present application provides a forklift arm with a pushing and pulling function, which has the effect of picking up and placing multiple trays from the deep part of the heat treatment furnace.

[0006] The forklift arm with a pushing and pulling function provided by the present application adopts the following technical solutions:

[0007] A forklift arm with a pushing and pulling function includes a fork and a fork frame, and further includes a dial block disposed inside the front end of the fork and a driving assembly for controlling the lifting of the dial block.

[0008] By adopting the above technical solution, the dial block is disposed inside the front end of the fork, and the driving assembly can control the lifting of the dial block. When the length of the heat treatment furnace is relatively long, the worker can control the dial block to rise through the driving assembly, so that the dial block is inserted into the hollow part of the tray. Only by contacting the front end of the fork with the tray can the tray be pushed and pulled, and the forklift arm can pick up and place the tray deep inside the heat treatment furnace.

[0009] Optionally, a cavity is formed on the upper side surface of the front end of the fork, the dial block is rotatably installed in the cavity at the front end of the fork, and the driving assembly controls the rotation of the dial block to raise or lower one end of the dial block.

[0010] By adopting the above technical solution, a cavity is opened in the front end of the fork to install the shift block; the shift block is rotatably installed in the cavity, and one end of the shift block is raised or lowered by rotation, which has a simple structure and is easy to control; a drive component is set to control the lifting and lowering of the shift block, which is convenient for flexibly controlling the telescopic state of the shift block according to the requirements of the tray conveying.

[0011] Optionally, a first rotating shaft perpendicular to the length direction of the fork is horizontally arranged in the cavity, and the shift block is rotatably sleeved on the rotating shaft; the shift block includes a counterweight part and a shifting part respectively arranged on both sides of the rotating shaft, and the weight of the counterweight part is greater than the weight of the shifting part; the driving assembly includes a support plate and a pull rod, and the support plate is placed flat in the cavity inside the front end of the fork; the support plate is located below the shift block, and when the support plate is located below the counterweight part to support the counterweight part, the shifting part retracts into the cavity; the pull rod is fixed to the side of the support plate away from the front end of the fork.

[0012] By adopting the above technical solution, a rotating shaft is set in the cavity, and the shift block is sleeved on the rotating shaft to realize the rotation of the shift block. The shift block is provided with a shifting part and a counterweight part. The shift block counterweight part is supported by driving the support plate, and the shift block counterweight part drives the shift block to rotate, so that the shift block can rise. When the driving support plate is away from the shift block counterweight part, the different weights at both ends of the shift block cause the shifting part to tilt up. The driving component is arranged to facilitate the control of the rotation of the shift block, so as to realize the state change of the shift block rising or falling.

[0013] Optionally, the driving assembly also includes a handle, a second rotating shaft and a shift rod, the second rotating shaft is rotatably mounted on the fork frame and is located above the pull rod, the handle is fixed to one end of the second rotating shaft, and the shift rod is fixed to a side of the rotating shaft close to the pull rod; a shift hole is penetrated through the pull rod, and the shift rod is inserted into the shift hole; an avoidance groove is provided at the bottom of the fork frame corresponding to the active trajectory of the shift rod.

[0014] By adopting the above technical solution, the pull rod is provided with a toggle hole, the toggle rod is inserted into the hole, the driving assembly on the fork frame acts on the driving assembly in the fork, the handle is turned to drive the toggle rod to swing, and the toggle rod drives the support plate to move, so that the support plate moves to contact or not contact the toggle block; the various components of the driving assembly cooperate with each other, and can safely and conveniently control the state change of the up or down of the toggle block at a long distance. The avoidance groove is provided at the bottom of the fork frame to leave enough space for the movement of the toggle rod.

[0015] Optionally, two shift blocks are provided, and the two shift blocks are sequentially arranged in the fork cavity along the length direction of the fork, and the counterweight parts of the two shift blocks are located at opposite positions.

[0016] By adopting the above technical solution, two shifting blocks are provided, and the counterweight parts of the two shifting blocks are in opposite positions to achieve different functions. When a worker needs to push or pull a material tray with a forklift arm, the shifting part of one shifting block rises to abut against the material tray, and the other shifting block is retracted into the cavity. The movement of the forklift enables the shifting part to achieve the function of pushing or pulling the forklift arm.

[0017] Optionally, the entire forklift fork is of a hollow square steel structure, and through holes for the shifting blocks to extend out are formed in the upper end surface of the forklift fork.

[0018] By adopting the above technical solution, the forklift fork directly adopts a hollow square steel structure, and the cavity inside the hollow square steel structure can be directly used as the cavity, which is convenient for installing the shifting blocks and the driving components.

[0019] Optionally, it includes a baffle, and the baffle is fixed on the upper side of the forklift fork, and the baffle covers one side of the rotating shaft close to the corresponding counterweight part.

[0020] By adopting the above technical solution, the baffle is fixed on the upper side of the forklift fork, and the baffle covers one side of the rotating shaft close to the corresponding counterweight part. When the shifting block pushes or pulls the material tray, the shifting part abuts against the baffle, which can limit the moving range of the shifting block.

[0021] Optionally, identification parts are arranged on the side wall of the forklift fork frame, and a plurality of the identification parts are arranged along the rotation track of the handle.

[0022] By adopting the above technical solution, a plurality of identification parts are arranged on the side wall of the forklift fork frame, and the identification parts are arranged along the rotation track of the handle to realize the feedback of the working state of the shifting block.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The present application discloses a forklift arm with pushing and pulling functions. By arranging shifting blocks and a driving component for controlling the lifting of the shifting blocks inside the front end of the forklift fork, the shifting blocks at the front end of the forklift fork are located below the material tray. When the shifting blocks rise, they can hook the hollow holes on the material tray so that the forklift fork can pull the material tray out of the heat treatment furnace; at the same time, the forklift fork can use its own front end or the rising shifting blocks to abut against the edge of the material tray and push the material tray deeper into the heat treatment furnace; the forklift arm can push the material tray deeper into the heat treatment furnace or pull it out from the depth.

[0025] 2. By arranging two shifting blocks, the two shifting blocks are sequentially arranged in the cavity of the forklift fork along the length direction of the forklift fork. The counterweight parts and the shifting parts of the two shifting blocks are in opposite positions. By adjusting the position of the support plate to change the support state of the support plate for the two shifting blocks, the flat state and the upright state of the shifting blocks can be switched, and thus the functions of hooking and pushing can be respectively realized by the two shifting blocks. During this process, the height of the forklift arm does not need to be adjusted, and the placement process of the material tray is more convenient. Description of the Drawings

[0026] Figure 1 It is an overall structural diagram of an embodiment of the present application;

[0027] Figure 2 It is a schematic diagram of the structure of the shifting block in an embodiment of the present application;

[0028] Figure 3 It is a schematic diagram of the linkage structure of the handle and the pull rod in the embodiment of the present application;

[0029] Figure 4 This is a schematic diagram of the push state of the dial block in an embodiment of the present application;

[0030] Figure 5 It is a schematic diagram of the pulling state of the shift block in an embodiment of the present application.

[0031] Description of the drawings: 1. Fork; 11. Baffle; 12. Cavity; 2. Shift block; 21. Shifting part; 22. Counterweight part; 23. First rotating shaft; 24. First shift block; 25. Second shift block; 3. Driving assembly; 31. Support plate; 32. Pull rod; 321. Shifting hole; 33. Handle; 34. Second rotating shaft; 35. Shift rod; 4. Fork frame; 41. Identification part; 42. Avoidance groove. DETAILED DESCRIPTION

[0032] The following is combined with Figures 1-5 This application is described in further detail.

[0033] The present application embodiment discloses a forklift arm with push-pull function, referring to Figure 1 , including a fork and a fork frame. The fork is a hollow square steel structure as a whole. The fork frame is fixed with the fork as a whole, and the fork frame is used to connect with the forklift.

[0034] refer to Figure 1 and Figure 2 Two shift blocks 2 are rotatably mounted inside the cavity 12 at the front end of the fork 1. The first rotating shaft 23 is a horizontal shaft perpendicular to the length direction of the fork 1. The two shift blocks 2 are arranged in sequence along the length direction of the forklift arm. The shift block 2 includes a counterweight 22 and a toggle 21 respectively arranged on both sides of the first rotating shaft 23. The weight of the counterweight 22 is greater than the weight of the toggle 21, so that the toggle 21 is tilted upward and passes through the upper surface of the fork 1. The counterweight 22 will abut against the inner wall of the fork 1 to limit the rotation range of the shift block 2. One end of the toggle 21 of the two shift blocks 2 is close to each other. Two baffles 11 are welded and fixed on the upper side of the fork 1 to close part of the notch. The two baffles 11 are respectively arranged directly above the counterweight 22 of the two shift blocks 2. An identification part 41 is arranged on the side wall of the fork frame 4. The identification part 41 is a convex block welded on the fork frame 4. There are three identification parts 41 along the rotation trajectory of the handle, which respectively indicate the three different extension states of the shift block 2.

[0035] A support plate 31 and a pull rod 32 are provided inside the fork 1; the support plate 31 is placed flat on the bottom of the groove of the fork 1 and can slide along the length direction of the fork 1. When the support plate 31 is placed under the counterweight part 22, the counterweight part 22 is lifted up, and the shifting part 21 falls back into the fork 1. The length of the support plate 31 is set to be able to support the counterweight parts 22 of two shift blocks 2 at the same time; the pull rod 32 is a long thin plate body arranged along the length direction of the fork 1, and the pull rod 32 is fixed on one side of the support plate 31 close to the fork frame 4. When the counterweight part 22 of the shift block 2 abuts against the pull rod 32, the shifting part 21 of the shift block 2 initially passes through the fork 1 and can be pushed.

[0036] refer to Figure 2 and Figure 3 The forklift arm also includes a driving assembly 3 for driving the shift block 2 to rise and fall. The driving assembly 3 includes a handle 33 rotatably mounted on the outer wall of the fork frame 4 and a second rotating shaft 34 rotatably mounted on the fork frame 4. The driving assembly 3 also includes the above-mentioned support plate 31 and the pull rod 32; the handle 33 is fixed to the second rotating shaft 34, a shift rod 35 is fixed to the second rotating shaft 34, a shift hole 321 is provided on the pull rod 32 corresponding to the shift rod 35, and the lower end of the shift rod 35 passes through the shift hole 321 on the pull rod 32. Turning the handle 33 drives the shift rod 35 to swing, and the shift rod 35 can drive the pull rod 32 and the support plate 31 to translate. An avoidance groove 42 is provided at the bottom of the fork frame 4 corresponding to the movement trajectory of the shift rod 35.

[0037] refer to Figure 2 In the initial state, the support plate 31 is located under the counterweight of the two shifting blocks 2 at the same time. The two shifting blocks 2 are in a flat state and retracted in the fork 1. The upper end surface of the fork 1 is smooth, and the fork 1 can be used as a regular fork. The shifting block 2 close to one end of the fork 1 is used as the first shifting block 24, and the other shifting block is used as the second shifting block 25; when the pull rod 32 acts on the support plate 31 to keep supporting the first shifting block 24 and away from the second shifting block 25, refer to Figure 4 , the moving part 21 of the second shift block 25 is extended from the fork 1 by the counterweight part 22, and the moving part 21 of the second shift block 25 can be pressed against the side of the material tray close to the forklift, and the second shift block 25 can push the material tray to move; when the pull rod 32 acts on the support plate 31 to keep supporting the second shift block 25 and away from the first shift block 24, refer to Figure 5 The toggle portion 21 of the first shift block 24 is extended from the fork 1 by the counterweight portion 22 thereof, and the toggle portion 21 of the first shift block 24 can be clamped with the hollow portion of the material tray. At this time, the first shift block 24 can hook the material tray out from the deep inside the heat treatment furnace.

[0038] Turning the handle 33 drives the lever 35 to swing, and the lever 35 drives the pull rod 32 to move the support plate 31, so that the support plate 31 supports the counterweight parts 22 of the two shift blocks 2, and the shifting parts 21 of the two shift blocks 2 retract into the fork 1, the forklift moves, and the fork 1 transports the material tray to the heat treatment furnace.

[0039] Rotating the handle 33 drives the pull rod 32 and the support plate 31 to move towards the front end of the fork 1, causing one end of the support plate 31 to prop up the counterweight portion 22 of the second toggle block 25, and the other end of the support plate 31 not to contact the counterweight portion 22 of the first toggle block 24. The toggle portion 21 of the second toggle block 25 retracts into the fork 1, the counterweight portion 22 of the first toggle block 24 drops and abuts against the bottom of the fork 1, and the toggle portion 21 of the first toggle block 24 extends out from the upper surface of the fork 1. The forklift moves forward first and then backward, and the toggle portion 21 of the first toggle block 24 is clamped with the hollow holes of the tray, and the fork 1 pulls the tray out from deeper inside the heat treatment furnace.

[0040] The implementation principle of this embodiment is as follows: The pull rod 32 cooperates with the support plate 31, and the support plate 31 abuts against the bottom of the toggle block 2, so that the toggle block 2 extends out or contracts from the fork 1. The forklift arm can not only carry the tray, but also switch between two different states of pushing and hooking by enabling different toggle blocks 2 without adjusting the height of the forklift arm. The forklift arm can push the tray deep into the heat treatment furnace or take it out from deep inside the heat treatment furnace, can adjust the position of the tray according to requirements, and can make more efficient use of the working space of the heat treatment furnace.

[0041] The above are all preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A forklift arm with push-pull function, comprising a fork (1) and a fork frame (4), characterized in that: The fork (1) further comprises a shifting block (2) arranged at the front end of the fork (1) and a driving assembly (3) for controlling the lifting and lowering of the shifting block (2); a cavity (12) is provided on the upper side surface of the front end of the fork (1); the shifting block (2) is rotatably mounted in the cavity (12) at the front end of the fork (1); the driving assembly (3) controls the rotation of the shifting block (2) to make one end of the shifting block (2) rise or fall; a first rotating shaft (23) perpendicular to the length direction of the fork (1) is horizontally arranged in the cavity (12); the shifting block (2) is rotatably sleeved on the first rotating shaft (23); the shifting block (2) comprises two parts respectively arranged on the first rotating shaft (23) and a plurality of parts respectively arranged on the first rotating shaft (23). The counterweight part (22) and the toggle part (21) are on both sides, and the weight of the counterweight part (22) is greater than the weight of the toggle part (21); the driving assembly (3) comprises a support plate (31) and a pull rod (32), and the support plate (31) is placed flat in the cavity (12) inside the front end of the fork (1); the support plate (31) is located below the toggle block (2), and when the support plate (31) is located below the counterweight part (22) to support the counterweight part (22), the toggle part (21) retracts into the cavity (12); the pull rod (32) is fixed to the side of the support plate (31) away from the front end of the fork (1).

2. The forklift arm with push-pull function according to claim 1, characterized in that: The driving assembly (3) also includes a handle (33), a second rotating shaft (34) and a shifting rod (35), wherein the second rotating shaft (34) is rotatably mounted on the fork frame (4) and is located above the pull rod (32), the handle (33) is fixed to one end of the second rotating shaft (34), and the shifting rod (35) is fixed to a side of the second rotating shaft (34) close to the pull rod (32); a shifting hole (321) is provided through the pull rod (32), and the shifting rod (35) is inserted into the shifting hole (321); and an avoidance groove (42) is provided at the bottom of the fork frame (4) corresponding to the moving track of the shifting rod (35).

3. The forklift arm with push-pull function according to claim 1, characterized in that: Two shifting blocks (2) are provided, and the two shifting blocks (2) are arranged in sequence in the cavity (12) of the fork (1) along the length direction of the fork (1), and the counterweight parts (22) of the two shifting blocks (2) are in opposite positions.

4. The forklift arm with push-pull function according to claim 1, characterized in that: The cargo fork (1) is a hollow square steel structure as a whole, and the upper end surface of the cargo fork (1) is provided with a through hole for the shifting block (2) to extend out.

5. A forklift arm with push-pull function according to any one of claims 1 to 3, characterized in that: It also includes a baffle (11), wherein the baffle (11) is fixed on the upper side of the fork (1), and the baffle (11) covers a side of the first rotating shaft (23) close to the counterweight part (22).

6. The forklift arm with push-pull function according to claim 2, characterized in that: A marking portion (41) is provided on the side wall of the fork frame (4), and a plurality of the marking portions (41) are provided along the rotation track of the handle (33).

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