An extendable pallet truck

Abstract

The utility model belongs to the transportation tool technical field discloses a kind of expandable tray delivery car, including tow bar, control box and support roller, the tow bar is installed on control box, the bottom of control box and support roller is equipped with gyro wheel, the control box includes horizontal control part, the horizontal control part includes fixed box, mobile box, horizontal motor and horizontal screw rod, the mobile box is movably arranged in fixed box, the horizontal screw rod is connected with horizontal motor, mobile box is equipped with the horizontal screw rod nut compatible with horizontal screw rod, the support roller includes the first support roller being set on fixed box, second support roller and as well as the third support roller being installed on mobile box, the third support roller is movably arranged in second support roller downside, third support roller and second support roller combination is the structure with trapezoidal cross section, third support roller moves horizontally with mobile box and separates from second support roller.

Description

Technical Field

[0001] This utility model belongs to the field of transportation vehicle technology, specifically relating to an expandable pallet transport vehicle. Background Technology

[0002] Currently, most high-voltage lines used in overhead power lines are steel-cored aluminum stranded wires. The steel core mainly serves to increase strength, while the aluminum stranded wire mainly serves to transmit electrical energy. The cross-sectional area of ​​the conductor varies depending on the voltage.

[0003] The production process of steel-cored aluminum stranded wire mainly includes raw material inspection, aluminum single wire resting, stranding, insulation layer coating (optional), and finished product inspection. Its core process is to tightly wind aluminum wire onto the stranded steel core, forming a composite conductor that combines high strength and conductivity.

[0004] In the wire drawing workshop, the 630-gauge wire drawing spools used for wire drawing need to transport the wire from the wire drawing area to the stranding area via pallet trucks. However, with a large number of production tasks, especially when there are many spools on the stranding machine, the existing pallet trucks can only transport 2 to 3 spools at a time, with a weight of 400kg to 600kg. If the wire drawing spools are not transported in a timely or sufficient manner, it will seriously affect production efficiency and fail to meet the needs of the workshop's large-scale production tasks.

[0005] Therefore, there is an urgent need to develop an expandable pallet transport vehicle that can adjust the transported wire drawing trays as needed to solve the problem of untimely and insufficient transport, in order to meet the needs of large-scale production tasks. Utility Model Content

[0006] To address the issue that existing pallet transport vehicles are too inefficient and cannot meet the demands of large-scale production in workshops, this invention provides an expandable pallet transport vehicle. The transported wire-drawing trays can be adjusted as needed to solve the problems of untimely and insufficient transport, thereby improving transport efficiency and meeting the needs of large-scale production tasks.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0008] An expandable pallet transport vehicle includes a tow bar, a control box, and support rollers. The tow bar is mounted on the control box. Rollers are provided at the bottom of both the control box and the support rollers. The control box includes a horizontal control unit, which includes a fixed box body, a movable box body, a horizontal motor, and a horizontal lead screw. The movable box body is movably disposed within the fixed box body. The horizontal lead screw is connected to the horizontal motor. A horizontal lead screw nut adapted to the horizontal lead screw is provided on the movable box body. The support rollers include a first support roller, a second support roller, and a third support roller disposed on the movable box body. The third support roller is detachably disposed below the second support roller. The third support roller and the second support roller are combined to form a trapezoidal cross-section structure. The third support roller detaches from the second support roller as the movable box body moves horizontally.

[0009] Furthermore, the third support roller has a trapezoidal cross-section and a roller on its bottom plate at the end. The second support roller is a triangular structure with a flap on the left side. The flap is folded, and the third support roller is located below the second support roller.

[0010] Furthermore, the support roller also includes a roller insert block. When the flap is opened, the roller insert block is inserted into the end of the second support roller to form a support roller.

[0011] Furthermore, the cross-section of the roller insert is trapezoidal, which is adapted to the shape of the flap of the second support roller after it is opened. The bottom is equipped with a roller, the top is provided with an insertion groove, and the end of the second support roller is provided with a screw hole. After the roller insert is inserted into the end of the second support roller, the second support roller and the roller insert are fixed by screws.

[0012] Furthermore, the control box also includes a lifting control unit, which includes a first housing, a lifting motor, and a lifting screw. The lifting screw is vertically installed in the first housing and connected to the lifting motor. A lifting plate is fixedly installed on the back panel of the fixed housing. A lifting screw nut adapted to the lifting screw is provided on the lifting plate. The lifting motor drives the lifting screw to rotate, thereby driving the horizontal control unit to rise and fall.

[0013] Furthermore, the lifting control unit also includes lifting guide rods, which are vertically and symmetrically arranged on both sides of the lifting screw, and lifting guide holes adapted to the lifting guide rods are provided on the lifting plate.

[0014] Furthermore, the horizontal control unit is also provided with a horizontal guide rod, and the movable housing is provided with a horizontal guide hole that matches the horizontal guide rod.

[0015] Furthermore, it also includes a handle and an operation panel. The bottom end of the tow rod is mounted on the control box via a pivot, and the top end is fitted with a handle and an operation panel.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This utility model provides an expandable pallet transport vehicle that can extend or fold the support rollers and raise or lower the support rollers, which improves transport efficiency, meets production needs, and can meet various working scenarios at different heights, greatly improving its applicability. Moreover, it has a simple structure, low cost, and is easy to maintain, resulting in good economic benefits. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the pallet transport vehicle of this utility model in its initial state.

[0019] Figure 2 This is a schematic diagram of the extended and raised structure of the pallet transport vehicle of this utility model.

[0020] Figure 3 This is a rear view of the pallet transport vehicle of this utility model in its initial state.

[0021] Figure 4 This is a schematic diagram of the internal structure of the lifting control unit of this utility model.

[0022] Figure 5 This is a schematic diagram of the internal structure of the horizontal control unit of this utility model.

[0023] Figure 6 This is a cross-sectional view showing the cooperation between the lifting control unit and the horizontal control unit of this utility model.

[0024] Figure 7 This is a schematic diagram of the structure of the third support roller and the second support roller of the pallet transport vehicle of this utility model when it is not extended.

[0025] Figure 8 This is a schematic diagram of the structure of the pallet transport vehicle of this utility model after the third support roller is detached from the second support roller.

[0026] Figure 9 This is a schematic diagram of the overall structure of the roller insert of this utility model.

[0027] Figure 10 This is a side view of the roller insert of this utility model.

[0028] in:

[0029] 1. Handle;

[0030] 2. Tow bar;

[0031] 3. Control box;

[0032] 3-1. Lifting control unit; 3-1-1. Lifting motor; 3-1-2. Lifting lead screw; 3-1-3. Lifting guide rod;

[0033] 3-2, Horizontal control unit; 3-2-1, Horizontal motor; 3-2-2, Horizontal lead screw; 3-2-3, Horizontal guide rod; 3-2-4, Back panel; 3-2-5, Lifting plate;

[0034] 4. Support roller; 4-1. First support roller; 4-2. Second support roller; 4-2-1. Flip plate; 4-3. Third support roller; 4-4. Roller insert block; 4-4-1. Insertion groove;

[0035] 5. Control panel. Detailed Implementation

[0036] The specific embodiments of this utility model will be further explained below with reference to the accompanying drawings.

[0037] like Figures 1-10 As shown, an expandable pallet transport vehicle includes a handle 1, a tow bar 2, a control box 3, a support roller 4, and an operation panel 5. The bottom end of the tow bar 2 is mounted on the control box 3 via a pivot, and the handle 1 and the operation panel 5 are mounted on the top end. The support roller 4 is mounted on the control box 3. Both the control box 3 and the support roller 4 are equipped with rollers at their bottoms to facilitate the overall movement of the pallet transport vehicle.

[0038] Specifically, the control box 3 includes a lifting control unit 3-1 and a horizontal control unit 3-2, wherein the horizontal control unit 3-2 is vertically and vertically connected to the lifting control unit 3-1. The bottom of the lifting control unit 3-1 is provided with casters.

[0039] The lifting control unit 3-1 includes a first housing, a lifting motor 3-1-1, a lifting screw 3-1-2, and lifting guide rods 3-1-3. The first housing is a semi-open structure with an opening in the front panel. The lifting screw 3-1-2 is vertically installed inside the first housing. The lifting motor 3-1-1 is installed on the top surface of the first housing and is connected to the lifting screw 3-1-2 inside the first housing, driving it to rotate. The lifting screw 3-1-2 is provided with a lifting screw nut that is fixedly connected to the horizontal control unit 3-2, used to drive the lifting movement of the horizontal control unit 3-2. The lifting guide rods 3-1-3 are a pair, vertically and symmetrically arranged on both sides of the lifting screw 3-1-2, and play a guiding role in the lifting of the horizontal control unit 3-2.

[0040] The horizontal control unit 3-2 includes a second housing, a horizontal motor 3-2-1, a horizontal lead screw 3-2-2, and a horizontal guide rod 2-2-3.

[0041] The second housing includes a fixed housing and a movable housing. The fixed housing is a semi-closed structure with an opening on the left panel. The movable housing is movably built into the fixed housing and can move horizontally towards the opening on the left panel of the fixed housing. The rear panel 3-2-4 of the fixed housing is fixedly provided with a lifting plate 3-2-5. The lifting plate 3-2-5 is provided with a lifting screw nut that matches the lifting screw 3-1-2 and a lifting guide hole that matches the lifting guide rod 3-1-3. The lifting motor 3-1-1 drives the lifting screw 3-1-2 to rotate, thereby driving the second housing as a whole to return through the lifting plate 3-2-5 to achieve lifting.

[0042] The movable housing is movably built into the fixed housing, and its right panel is provided with a horizontal lead screw nut that matches the horizontal lead screw 3-2-2 and a horizontal guide hole that matches the horizontal guide rod 2-2-3.

[0043] The horizontal lead screw 3-2-2 is horizontally installed inside the second housing. One end of the lead screw passes through the right panel of the fixed housing and is connected to the horizontal motor 3-2-1 installed on the outside. The other end passes through the right panel of the movable housing and is rotatably connected to the horizontal lead screw nut. The horizontal guide rod 2-2-3 is symmetrically arranged on the upper and lower sides of the horizontal lead screw 3-2-2. One end of the guide rod is fixed to the right panel of the fixed housing, and the other end passes through the horizontal guide hole and is movably installed inside the movable housing. The horizontal motor 3-2-1 drives the horizontal lead screw 3-2-2 to rotate, thereby driving the horizontal lead screw nut and thus causing the movable housing to move back and forth horizontally in the direction of the opening on the left panel of the fixed housing.

[0044] The support roller 4 includes a first support roller 4-1, a second support roller 4-2, a third support roller 4-3, and a roller insert 4-4.

[0045] The first support roller 4-1 and the second support roller 4-2 are fixed to the fixed box from right to left, and the third support roller 4-3 is fixed to the movable box. Therefore, the third support roller 4-3 moves synchronously with the movable box. The cross-sections of the first support roller 4-1 and the third support roller 4-3 are both trapezoidal, and both are equipped with rollers at the bottom. The second support roller 4-2 has a triangular structure, and its left side is a foldable flap 4-2-1. The flap 4-2-1 is folded when the pallet transport vehicle is not extended, and unfolded when extended, forming an independent support roller.

[0046] When the second support roller 4-2 and the third support roller 4-3 are not separated, such as Figure 7 As shown, the flap 4-2-1 is in a folded state, and the third support roller 4-3 is hidden under the second support roller 4-2. The two are combined into a structure with a trapezoidal cross-section and share a roller set at the bottom of the third support roller 4-3.

[0047] When the second support roller 4-2 and the third support roller 4-3 separate, as Figure 8 As shown, the third support roller 4-3 moves synchronously to the left with the moving box to form an extended support roller. The flap 4-2-1 of the second support roller 4-2 opens, forming a trapezoidal structure with no bottom edge on three sides. At this time, the roller insert 4-4 is inserted into the end of the second support roller 4-2, thus forming a complete support roller.

[0048] The cross-section of the roller insert 4-4 is a trapezoidal structure that matches the second support roller 4-2 in the open state. It has a roller at the bottom and an insertion groove 4-4-1 at the top for easy insertion into the end of the second support roller 4-2. At the same time, the end of the second support roller 4-2 is provided with a screw hole, and the second support roller 4-2 and the roller insert 4-4 are fixed by screws.

[0049] The operation panel 5 is connected to the lifting motor 3-1-1 and the horizontal motor 3-2-1, and is used to control their opening, closing and forward / reverse rotation.

[0050] When the pallet truck needs to extend its support rollers, press the extension button on the control panel 5 to start the horizontal motor 3-2-1. The horizontal motor 3-2-1 drives the horizontal lead screw 3-2-2 to rotate in the forward direction. The horizontal lead screw 3-2-2 drives the horizontal lead screw nut, thereby moving the housing to disengage the third support roller 4-3 from the second support roller 4-2. After the third support roller 4-3 moves into place, open the flap 4-2-1 of the second support roller 4-2, install and fix the roller insert 4-4, thus realizing the extension of the pallet truck.

[0051] When the pallet transport vehicle needs to fold the support rollers, the control box 3 can be reversed by pressing the folding button on the operation panel.

[0052] With only two support rollers, the pallet truck can only transport 2-3 spools of wire at a time, but when the third support roller is opened, the transport capacity doubles.

[0053] When it is necessary to raise the support roller, press the lift button on the operation panel 5 to start the lifting motor 3-1-1. The lifting motor 3-1-1 drives the lifting screw 3-1-2 to rotate forward. The lifting screw 3-1-2 drives the lifting screw nut, thereby driving the flat control unit 3-2 to move upward as a whole, and thus lifting the support roller in conjunction.

[0054] When it is necessary to lower the support roller, simply press the descent button on the operation panel 5, and the control box 3 will move in the opposite direction.

[0055] This embodiment of an expandable pallet transport vehicle can both extend or fold the support rollers and raise or lower the support rollers, which improves transport efficiency, meets production needs, and can meet various working scenarios at different heights, greatly improving its applicability. Moreover, it has a simple structure, low cost, is easy to maintain, and has good economic benefits.

[0056] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An expandable pallet transport vehicle, characterized in that, The system includes a tow rod (2), a control box (3), and a support roller (4). The tow rod (2) is mounted on the control box (3). Rollers are provided at the bottom of both the control box (3) and the support roller (4). The control box (3) includes a horizontal control unit (3-2), which includes a fixed box, a movable box, a horizontal motor (3-2-1), and a horizontal lead screw (3-2-2). The movable box is movably mounted inside the fixed box. The horizontal lead screw (3-2-2) is connected to the horizontal motor (3-2-1). The movable box... A horizontal lead screw nut adapted to the horizontal lead screw (3-2-2) is provided. The support roller (4) includes a first support roller (4-1), a second support roller (4-2) set on the fixed box and a third support roller (4-3) set on the movable box. The third support roller (4-3) is detachably set on the lower side of the second support roller (4-2). The third support roller (4-3) and the second support roller (4-2) are combined to form a structure with a trapezoidal cross section. The third support roller (4-3) moves horizontally with the movable box and detaches from the second support roller (4-2).

2. The expandable pallet transport vehicle according to claim 1, characterized in that, The third support roller (4-3) has a trapezoidal cross-section and a roller on the bottom plate at its end. The second support roller (4-2) is a triangular structure with a flap on the left side. The flap is folded. The third support roller (4-3) is located on the lower side of the second support roller (4-2).

3. An expandable pallet transport vehicle according to claim 2, characterized in that, The support roller (4) also includes a roller insert (4-4). When the flap is opened, the roller insert (4-4) is inserted into the end of the second support roller (4-2) to form a support roller.

4. An expandable pallet transport vehicle according to claim 3, characterized in that, The cross-section of the roller insert (4-4) is trapezoidal, which is adapted to the shape of the flap of the second support roller (4-2) after it is opened. The bottom is equipped with a roller, and the top is provided with an insertion groove (4-4-1). The end of the second support roller (4-2) is provided with a screw hole. After the roller insert (4-4) is inserted into the end of the second support roller (4-2), the second support roller (4-2) and the roller insert (4-4) are fixed by screws.

5. An expandable pallet transport vehicle according to claim 1, characterized in that, The control box (3) also includes a lifting control unit (3-1). The lifting control unit (3-1) includes a first box body, a lifting motor (3-1-1) and a lifting screw (3-1-2). The lifting screw (3-1-2) is vertically installed in the first box body and connected to the lifting motor (3-1-1). The back plate (3-2-4) of the fixed box body is fixedly provided with a lifting plate (3-2-5). The lifting plate (3-2-5) is provided with a lifting screw nut that is compatible with the lifting screw (3-1-2). The lifting motor (3-1-1) drives the lifting screw (3-1-2) to rotate, thereby driving the horizontal control unit (3-2) to rise and fall.

6. An expandable pallet transport vehicle according to claim 5, characterized in that, The lifting control unit (3-1) also includes a lifting guide rod (3-1-3), which is vertically and symmetrically arranged on both sides of the lifting screw (3-1-2), and the lifting plate (3-2-5) is provided with a lifting guide hole that is compatible with the lifting guide rod (3-1-3).

7. An expandable pallet transport vehicle according to claim 1, characterized in that, The horizontal control unit (3-2) is also provided with a horizontal guide rod (2-2-3), and the movable box is provided with a horizontal guide hole that matches the horizontal guide rod (2-2-3).

8. An expandable pallet transport vehicle according to claim 1, characterized in that, It also includes a handle (1) and an operation panel (5). The bottom end of the tow bar (2) is mounted on the control box (3) via a pivot, and the top end is fitted with a handle (1) and an operation panel (5).

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