A pallet jack

Abstract

This utility model discloses a pallet transporter, including a frame, a back frame, side frames on the left and right sides of the back frame, a tail frame at the rear of the back frame, steering casters at the bottom of the tail frame, directional casters at the bottom of the side frames, an adjusting frame for vertical movement at the front of the tail frame, a cantilever above the back frame, one end of the cantilever connected to the adjusting frame, a jack between the cantilever and the tail frame, a handrail hinged to the tail frame, an adjusting shaft rotatably connected to the adjusting frame with its axis extending left and right, and a guide rod fixedly connected to the adjusting frame with its axis extending left and right, a left guide sleeve and a right guide sleeve slidably connected to the guide rod, a left lead screw and a right lead screw nut threaded onto the adjusting shaft, a handwheel at at least one end of the adjusting shaft, and a left fork arm and a right fork arm. This transporter features adjustable fork arm spacing and centered fork arm position.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, and more specifically, it relates to a pallet handling vehicle. Background Technology

[0002] Forklifts used for pallet handling on the market mainly include electric forklifts and manual forklifts. Manual forklifts include those with adjustable fork arm spacing and those with non-adjustable fork arm spacing. For forklifts with adjustable fork arm spacing, the forks can be manually moved freely left and right, but it is difficult to center them properly, causing the center of gravity to tilt to one side when picking up pallets, posing a safety hazard and resulting in poor overall performance. Therefore, this utility model proposes a pallet handling vehicle. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a pallet transport vehicle with adjustable fork arm spacing and fork arm position kept in the center.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: This utility model relates to a pallet handling vehicle, including a frame, a back frame, and side frames extending forward on both sides of the back frame. A tail frame is located at the rear of the back frame, with steering casters at the bottom of the tail frame and directional casters at the bottom of the side frames. An adjusting frame that moves vertically relative to the tail frame is located in front of the tail frame. A cantilever extending forward and backward is located above the back frame, with one end of the cantilever connected to the adjusting frame. A jack with a cylinder connected to the tail frame and a rod connected to the cantilever is located between the cantilever and the tail frame. The tail frame... The upper hinge has a handle connected to the operating lever of the jack. The adjustment frame is rotatably connected to an adjustment shaft with an axis extending left and right, and fixedly connected to a guide rod with an axis extending left and right. A left guide sleeve and a right guide sleeve are slidably connected to the guide rod. A left lead screw and a right lead screw with opposite helical directions are connected in series on the adjustment shaft. A left lead screw nut is threaded on the left lead screw, and a right lead screw nut is threaded on the right lead screw. At least one end of the adjustment shaft is provided with a handwheel for controlling rotation. It also includes a left fork arm connected to the left guide sleeve and the left lead screw nut, and a right fork arm connected to the right guide sleeve and the right lead screw nut, respectively.

[0005] The present invention is further configured such that: the left and right sides of the adjustment frame are respectively provided with guide frames connected to the back frame, and the end of the guide frame facing the adjustment frame is provided with a guide groove that extends vertically, and the adjustment frame is slidably connected in the guide groove.

[0006] The present invention is further configured such that the handwheels are respectively located at both ends of the adjusting shaft.

[0007] The present invention is further configured such that the handwheel extends outside the side frame.

[0008] The present invention is further configured such that the adjusting shaft is located above the guide rod.

[0009] In summary, the present invention has the following beneficial effects: The pallet handling vehicle involved in the present invention can realize the horizontal left and right position adjustment of the left and right forks by manually turning the handwheel and through the mechanism transmission. The adjusted position is kept in the center and the center of gravity is not biased, making pallet handling safer and more reliable. The overall function is perfect and the practicality is strong. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0011] Figure 2 This is a partial structural schematic diagram of the present invention;

[0012] Figure 3 This is a partial structural schematic diagram of the present invention. Detailed Implementation

[0013] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the patent claims of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0014] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0015] Example 1

[0016] See Figures 1 to 3As shown, the pallet handling vehicle involved in this embodiment includes a frame, which includes a back frame 1. Side frames 2 extending forward are respectively provided on the left and right sides of the back frame 1. A tail frame 3 is provided at the rear of the back frame 1. Steering casters 4 are provided at the bottom of the tail frame 3. Directional casters 5 are provided at the bottom of the side frames 2. An adjustment frame 6 that moves vertically relative to the tail frame 3 is provided in front of the tail frame 3. A cantilever 7 extending forward and backward is provided above the back frame 1. One end of the cantilever 7 is connected to the adjustment frame 6. A jack 8, with its cylinder connected to the tail frame and its rod connected to the cantilever 3, is provided between the cantilever 7 and the tail frame 3. A handle 9, hinged to the tail frame 3 and connected to the operating lever of the jack, is also provided. The adjustment frame 6 is rotatably connected to an adjustment shaft 10 with an axis extending left and right, and is fixedly connected to a guide rod 11 with an axis extending left and right. A left guide sleeve 12 and a right guide sleeve 13 are slidably connected to the guide rod 11. A left lead screw 14 and a right lead screw 15 with opposite helical directions are connected in series on the adjustment shaft 10. A left lead screw nut 16 is threaded on the left lead screw 14, and a right lead screw nut 17 is threaded on the right lead screw 15. Both ends of the adjustment shaft 10 are provided with handwheels 18 for controlling rotation. It also includes a left fork arm 19 connected to the left guide sleeve and the left lead screw nut, and a right fork arm 20 connected to the right guide sleeve and the right lead screw nut, respectively.

[0017] In this embodiment, by rotating the handwheel 18 clockwise, the left fork arm 19 and the right fork arm 20 move relative to each other through the transmission of two sets of lead screw pairs with opposite rotation directions and the guiding effect of the guiding component, increasing the distance between the left fork arm 19 and the right fork arm 20; by rotating the handwheel 18 counterclockwise, the left fork arm 19 and the right fork arm 20 move towards each other through the transmission of two sets of lead screw pairs with opposite rotation directions and the guiding effect of the guiding component, decreasing the distance between the left fork arm 19 and the right fork arm 20.

[0018] During the position adjustment of the left fork arm 19 and the right fork arm 20, the two forks arm remain in the middle position because they move in sync.

[0019] Example 2

[0020] See Figures 1 to 3 As shown, the pallet handling vehicle involved in this embodiment is further configured based on embodiment 1, wherein the left and right sides of the adjustment frame 6 are respectively provided with guide frames 21 connected to the back frame, and the end of the guide frame 21 facing the adjustment frame is provided with a guide groove (unmarked) that extends vertically, and the adjustment frame 6 is slidably connected in the guide groove.

[0021] In this embodiment, the guide frame 21 and the guide groove provided on the guide frame 21 serve as sliding guides for the adjustment frame 6 to move up and down relative to the back frame 1.

[0022] Example 3

[0023] See Figures 1 to 3 As shown, the pallet handling vehicle involved in this embodiment is further configured, based on embodiment 1, with the handwheel 18 extending outside the side frame 2.

[0024] Furthermore, the adjustment shaft 10 is located above the guide rod 11.

[0025] In this embodiment, by extending the handwheel 18 to the outside of the side frame 2, the operator can easily adjust the position of the left and right forks.

[0026] By setting the adjusting shaft 10 above the guide rod 11, the height of the handwheel 18 is increased, ensuring that the position of the handwheel 18 is not too low, making it convenient for the operator to operate.

[0027] The pallet handling vehicle involved in this utility model can achieve horizontal left and right position adjustment of the left and right forks by manually turning the handwheel and through the mechanism transmission. The adjusted position is kept in the center and the center of gravity is not offset, making pallet handling safer and more reliable. The overall function is complete and highly practical.

[0028] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the actual orientation or positional relationship shown. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the embodiments and according to the specific circumstances.

[0029] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A pallet handling vehicle, comprising a frame, the frame including a back frame, side frames extending forward on the left and right sides of the back frame, a tail frame at the rear of the back frame, steering casters at the bottom of the tail frame, directional casters at the bottom of the side frames, an adjusting frame for vertical movement at the front of the tail frame, a cantilever extending forward and backward above the back frame, one end of the cantilever connected to the adjusting frame, a jack with a cylinder connected to the tail frame and a rod connected to the cantilever between the cantilever and the tail frame, and a handle hinged to the tail frame and connected to the operating lever of the jack, characterized in that: The adjustment frame is rotatably connected to an adjustment shaft with an axis extending left and right, and fixedly connected to a guide rod with an axis extending left and right. A left guide sleeve and a right guide sleeve are slidably connected to the guide rod. A left lead screw and a right lead screw with opposite helical directions are connected in series on the adjustment shaft. A left lead screw nut is threaded onto the left lead screw, and a right lead screw nut is threaded onto the right lead screw. At least one end of the adjustment shaft is provided with a handwheel for controlling rotation. It also includes a left fork arm connected to the left guide sleeve and the left lead screw nut, and a right fork arm connected to the right guide sleeve and the right lead screw nut, respectively.

2. The pallet handling vehicle according to claim 1, characterized in that: The adjustment frame is provided with guide frames on the left and right sides, which are connected to the back frame. The end of the guide frame facing the adjustment frame is provided with a guide groove that extends vertically. The adjustment frame is slidably connected in the guide groove.

3. The pallet handling vehicle according to claim 1 or 2, characterized in that: The handwheels are located at both ends of the adjusting shaft.

4. The pallet handling vehicle according to claim 3, characterized in that: The handwheel extends outside the side frame.

5. The pallet handling vehicle according to claim 1, characterized in that: The adjustment shaft is located above the guide rod.

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