WO2018006666A1

WO2018006666A1 - Open-type electric pallet truck

Info

Publication number: WO2018006666A1
Application number: PCT/CN2017/085946
Authority: WO
Inventors: 刘晓东; 张志宇; 冯平
Original assignee: 诺力机械股份有限公司
Priority date: 2016-07-07
Filing date: 2017-05-25
Publication date: 2018-01-11
Also published as: CN106044637A; CN106044637B

Abstract

An open-type electric pallet truck comprises a truck frame (1), a goods fork (2), a top cover (3), a hydraulic pump station (5), an operation handle (6), an electronic control device (7), and a driving wheel device (8) that is used for driving the pallet truck to travel. The truck frame (1) is connected to the top cover (3) and the goods fork (2), and an open space used for mounting a storage battery device (4) is defined above the goods fork (2). The hydraulic pump station (5), the operation handle (6), the electronic control device (7) and the driving wheel device (8) are mounted on one side distant from the goods fork (2) in an open manner. The pallet truck is provided with a wire coiling box (9) that is electrically connected to the storage battery device (4) and the electronic control device (7) to supply power to the pallet truck. The storage battery, the hydraulic pump station, the operation handle, the electronic control device and the driving wheel device of the electric pallet truck are all mounted on a truck body in an open manner, and accordingly assembly, troubleshooting and disassembly of the electric pallet truck are facilitated.

Description

Push-pull electric truck

Technical field

[0001] The present invention relates to the field of handling machinery, and more particularly to a drop-type electric pallet truck.

Background technique

[0002] Electric pallet trucks are mainly used to transport various types of machinery and other heavy objects, and are suitable for cargo transportation in a small space. It is a kind of lifting handling tool commonly used in factory workshops and warehouses.

[0003] The authorization bulletin number is CN 201770448 U, and the authorization bulletin date is March 23, 2011. The utility model patent discloses a rack housing for an electric pallet truck to facilitate the disassembly and installation of the electric pallet truck. However, the electric pallet truck of this structure still has a casing, and it is necessary to remove the main casing when the electric pallet truck is inspected and maintained; in the assembly, the casing needs to be fixed to the fuselage.

technical problem

Problem solution

Technical solution

[0004] A technical object of the present invention is to provide a drop-type electric pallet truck to simplify the structure and disassembly process of the electric pallet truck.

[0005] The technical solution of the present invention is as follows: A pick-up electric pallet truck, including a frame, a fork, a top cover, a hydraulic pump station, an operating handle, an electric control device, and a driving wheel device for driving the truck to travel The utility model is characterized in that: the frame connects the top cover and the fork, and encloses a discharge space for mounting the battery device above the fork; the hydraulic pump station, the operation a handle, the electric control device and the drive wheel device are mounted on a side remote from the fork; the truck is electrically connected to the battery device and the electronic control device is the truck Powered cable box. The battery, hydraulic pumping station, operating handle, electronic control unit and drive wheel unit of the electric pallet are mounted on the vehicle body in a slidable manner. Convenient for assembly, troubleshooting and disassembly of electric pallet trucks.

[0006] Preferably, the buffering space includes at least a battery mounting port disposed above, a battery maintenance port disposed at a side, and a limiting device; the battery device includes a battery pack having a battery casing, the battery casing Setting a connector interface, outputting a voltage or current through the connector assembly for the electric handling The car is powered. To replace the battery pack, it is only necessary to remove the connector assembly from the connector interface of the battery case, and remove the battery device from the battery installation port above the deployment space to remove the battery device from the frame for charging; Similarly, it is only necessary to insert the battery device with sufficient power into the charging space through the battery mounting port, and insert the connector assembly into the connector interface of the battery casing to complete the installation of the battery device. Replacement of the battery unit. The replacement process of the entire battery device does not involve other parts of the electric truck. The battery maintenance port on the side can be easily repaired by the maintenance personnel without disassembling any parts of the electric truck.

[0007] Preferably, the frame comprises a skeleton tube connecting two forks on both sides of the top cover; the skeleton tube includes an extension section and a vertical section; one end of the extension section is connected to the top A cover extends in a direction away from the top cover in a length direction of the fork, the vertical section vertically connecting the other end of the extension and the fork. Providing, in the extension, the plunging space enclosed by the skeleton tube having a certain length, the vertical section ensuring that the blasting space enclosed by the skeleton tube has a certain height to ensure The battery device can be placed in the deployment space. The entire deployment space is only enclosed by the skeleton tube such that a substantial portion of the battery device is exposed to the environment. Battery unit disassembly, replacement and maintenance are easier. At the same time, it also helps the heat dissipation of the battery to ensure its working condition.

[0008] Preferably, the limiting device comprises a limiting pillar vertically disposed under the top cover, and the battery casing is provided with upper limit components and lower limit components having different heights on both sides of the limiting pillar One of the limit components sets a connector interface. The limiting component of the battery casing is disposed on both sides of the limiting pillar to fix the battery device and the limiting pillar to prevent battery sloshing. The upper and lower limit components are staggered on both sides of the limit column, and a larger limit length can be obtained. Combining the limiting component and the connector interface into one makes the structure of the battery device simpler. Moreover, the position of the limiting component is more difficult to shake relative to other parts of the battery casing, and the connector interface is disposed at the same time, so that the connection between the connector component and the connector interface is stabilized, thereby It is ensured that the power output line of the battery device is stable.

[0009] Preferably, the driving wheel device includes a driving wheel and a driving wheel frame; the driving wheel carrier includes a wheel frame mounting portion that connects the driving wheels, and a guard device that is disposed in front of the driving wheel through the wheel frame mounting portion The guard device includes a guard disposed in front of the drive wheel, and the guard portion and the A service section between the wheel mounts. The guard device is provided with a special service portion for inspecting the drive wheel, so that it is no longer necessary to remove the guard device from the frame body after the drive wheel is inspected.

[0010] Preferably, the protection portion is a tubular positive protection tube, and the protection device comprises a side protection tube that is inclinedly connected to the wheel frame installation portion on both sides of the front protection tube, and the inspection portion includes The front protective tube and the side protective tube form an access window formed above the driving wheel. The positive protective tube is disposed directly in front of the driving wheel to prevent an operator from being crushed and injured by the driving wheel during walking operation of the electric pallet truck; the positive protective tube and the side protective tube are connected to each other The driving wheel is protected in the middle, and an access window is formed above the driving wheel to facilitate the maintenance of the driving wheel; meanwhile, the tubular protective device replaces the protective cover disposed above the driving wheel, which greatly simplifies protection The structure of the device.

[0011] Preferably, the wheel carrier mounting portion includes a bearing seat mounted above the driving wheel, and a bracket disposed on two sides of the bearing housing; a front end of the bracket is coupled to the bearing housing, The tail end of the bracket is connected to the side guard tube.

[0012] Preferably, the tail end of the bracket is provided with a hinge seat, and the fork is hinged to the hinge seat by its rocker arm mechanism. The fork of the electric pallet is hinged to the bracket by the rocker arm mechanism, and is rotated about the hinge point of the bracket during the jacking of the frame.

[0013] Preferably, the cable box includes an outer casing mounted on the driving wheel device, and an electric wire disposed in the outer casing; the electric wire is spirally wound around the outer casing, and the electric wire is included in the a lateral direction of the outer casing connecting the first direction of the battery, a second direction segment connecting the electrical control device in a longitudinal direction of the outer casing, and being disposed between the first direction segment and the second direction segment a spiral segment; the spiral segment includes an inner ring having a minimum radius and an outer ring having a largest radius, the first direction segment connecting the outer ring of the spiral segment, and the second direction segment connecting the spiral segment Inner ring. The wire is spirally wound around the outer casing, and the volume of the outer casing can be reduced while ensuring a sufficient length of the wire; meanwhile, as the electronic control device moves relative to the battery, the inside of the outer casing The wire automatically adjusts the number of turns or radius of the spiral wrap to accommodate different wire length requirements resulting from differences in electrical device and battery position. The cable box itself is fixed relative to the battery, reducing the failure rate of the electric truck. The longitudinal direction and the lateral direction correspond to the spiral plane and the axial direction of the spiral segment, and it is convenient to convert the change in the relative position between the battery and the electronic control device to the change in the spiral radius of the spiral segment. Half of the inner circle The diameter is the smallest, and the occupied space is also the smallest. When the second direction segment connected to the inner ring moves with the electronic control device, the displacement of the electronic control device can be converted into the change of the inner ring radius as soon as possible. Small impact on other parts of the wire. The outer ring has the largest radius and the largest space occupied. The first direction segment connected with the outer ring is generally fixed, and even if unexpected motion occurs, the displacement change can be maximized by the outer ring. Reduce the impact on other parts of the wire.

[0014] Preferably, the shell wall is provided for a lateral mouth, the width of the side mouth is larger than the diameter of the outer ring; the second direction section extends to the side through the lateral mouth The outer casing is provided with a clamp mounting portion for mounting a clamp, and the clamp can fixedly connect the casing and the first direction section. The entire side of the spiral segment is exposed, the wire may be mounted in the outer casing in the direction of a smooth needle or a reverse needle, and then one end of the lateral cornice is selected to extend out of the outer casing and the outer casing Said battery connection. The first direction segment is extended beyond the position, and the installation connection is more flexible. Advantageous effects of the invention

Beneficial effect

[0015] A pick-up electric pallet truck of the present invention has the following beneficial effects:

[0016] 1. Reasonable structural design, so that the whole machine has a relatively strong self-weight in the same structure with a strong skeleton structure, and can be used in a freight elevator.

[0017] 2. Compact structure, small turning radius, smart and easy to operate.

[0018] 3. Fully open design, convenient for user maintenance and maintenance.

[0019] 4. Battery installation, easy to remove and replace the battery.

[0020] 5. When the battery is exhausted, the other battery can be quickly replaced, effectively double the working time.

[0021] 6. The electric control device, the hoisting system and the driving device are integrated, and there is only one power harness between the battery and the rear battery. The routing path is safer and smoother, reducing the risk of line failure.

Brief description of the drawing

DRAWINGS

[0022] FIG. 1 is a perspective view of a portable electric transport vehicle.

[0023] FIG. 2 is a right side view of an electric pallet truck that can quickly replace a battery.

[0024] FIG. 3 is a top plan view of an electric pallet truck that can quickly replace a battery.

4 is a schematic view showing the installation of a battery device. Figure 5 is a schematic view showing the installation of the safety drive wheel carrier.

[0027] FIG. 6 is a structural diagram of a safety drive wheel carrier.

[0028] FIG. 7 is a rear view of the stent.

[0029] FIG. 8 is a schematic view showing the installation standard of the guard device.

[0030] FIG. 9 is a guard installation curve.

[0031] FIG. 10 is a perspective view of a cable box.

[0032] FIG. 11 is a top view of the cable box.

[0033] FIG. 12 is a bottom view of the cable box.

[0034] Among them, 1-frame, 2-fork, 3-top cover, 4-battery device, 5-hydraulic pump station, 6-operating handle, 7-electric control box, 8-drive wheel device, 9- Cable box, 81-drive wheel frame, 82-drive wheel, 811-bearing seat, 812-bracket, 8111-bracket mount, 8131-positive guard tube, 8132-side guard tube, 8133-circular tube, 8121 1 - tightening section, 81212-mounting section, 8122-shield pipe joint, 8123-driven wheel mount, 8124-hinged seat, 921-first direction section, 922-second direction section, 9231-outer ring, 9232- Ring, 911-shell bottom, 912-shell wall, 913-shell cover, 914-mounting, 9121-clamp, 9122-clamp mounting, 11-extension, 12-vertical, 13-position panel , 14-side baffle, 15-reinforcing coaming, 31-restricted post, 43-connector assembly, 411-upper limit assembly, 412-lower limit assembly, 131-ventilation vent.

BEST MODE FOR CARRYING OUT THE INVENTION

[0035] Embodiments of the present invention will be described in detail below with reference to the drawings. As shown in Figure 1, a pick-up electric truck.

[0036] The frame 1 is connected to the top cover 3 and the fork 2 and is enclosed above the fork 2 for the installation of the battery unit 4. The side away from the fork 2 is mounted with a drive wheel unit 8 , a coil box 9 , a hydraulic pump station 5 , an electric control unit 7 and an operating handle 6 from the bottom to the top. The electric control unit 7 is electrically connected to the operating handle 6, supplies power to the operating handle 6, controls the state of the electric transport vehicle according to the command of the operating handle 6, and feeds back the state of the electric transport cart to the operating handle 6. The electric control unit 7 and the battery 4 are electrically connected through the bobbin case 9. The cable box and the frame 1 are fixedly connected, the electronic control unit 7. The drive wheel unit 8. The hydraulic pump station 5 is connected to the operating handle 6, and can be rotated relative to the frame with the operating handle 6.

[0037] As shown in FIG. 2 and FIG. 3, two forks 2 of the electric pallet are symmetrically distributed on both sides of the top cover 3 to form a frame 1 The skeleton tube is connected to both sides of the top cover 3 and extends to the lower side to be fixedly connected to the two forks 2. The skeleton tube includes an extension 11 and a vertical section 12. One end of the extension section 11 is connected to the top cover 3 and extends in the longitudinal direction of the fork 2 in a direction away from the top cover 3, and the vertical section 12 vertically connects the other end of the extension section 11 and the fork 2. The skeleton tube is surrounded by a top cover 3 and a joint of the skeleton tube and the two forks, and a space is arranged between the three points. The lifting space has a certain length on the fork 2, has a certain height in a vertical direction perpendicular to the plane of the fork 2, and has a certain width between the joints of the two forks 2 and the skeleton tube, and can be used To install the battery unit 4.

[0038] In order to prevent the battery device 4 from freely shaking in the squatting space, displacement occurs. A limiting pillar 31 is vertically disposed under the top cover 3, and a limiting panel 13 is also disposed between the two vertical sections of the skeleton tube. The plane of the limiting panel 13 is perpendicular to the plane of the fork and the side of the limiting pillar 31. parallel. The limit panel 13 and the limit post 31 limit the battery unit 4 in the direction of travel of the electric pallet to prevent it from tipping forward and backward. On the side of the venting space, side dams 14 are vertically disposed on both sides of the limiting panel 13. The side fences 14 prevent the battery unit 4 from falling to the left and right on the left and right sides of the electric transport vehicle. The height of the limiting post 31 and the limiting panel 13 for limiting the battery device 4 in the direction of travel of the vehicle is higher than the height of the side baffle 14, so that the installation of the battery device 4 can be ensured, and the maximum capacity of the battery device 4 can be satisfied. The exposed area is designed to increase its heat dissipation capacity, and the size of the maintenance space is also increased. The battery unit 4 includes a battery case 41 and two batteries assembled in the battery case. The battery case integrates the two batteries in one unit for easy installation and replacement. In order to alleviate the slight shaking of the battery unit 4 during operation of the electric pallet truck, a cushion 131 of polyurethane material is disposed between the battery casing and the limiting panel 13. The cushion pad 131 can increase the sliding friction between the limiting panel 13 and the battery casing, and the battery device 4 can still maintain the stationary state of the limiting panel 13 under the frictional force after being stressed. A circle of reinforcing gussets 15 is also provided on the periphery of the bottom of the plunging space. The reinforced louver 15 is perpendicular to the plane of the fork and surrounds at least three directions of the bottom surface of the blasting space. The battery casing is provided with upper limit members 411 and lower limit members 412 having different heights on both sides of the limit column 31. The upper and lower limit components cooperate with the limit post 31 to fix the limit. It has been verified by repeated experiments that the battery device 4 of the electric pallet truck of this configuration does not slip out of the mounting space of the dumping even when the electric pallet truck is tilted to the left or right side of the electric pallet truck.

[0039] The battery device 4 is installed in a squatting space formed by the skeleton tube on the right side of the limiting pillar 31; and the hydraulic pumping station 5, the operating handle 6, the electric control box 7, and the driving wheel device 8 are installed at the limit The column 31 is on the left side. On fork 2 Only the battery device 4 is installed, that is, the center of gravity of the electric vehicle is lowered, and the length of the body of the electric vehicle is shortened while ensuring the existing cargo space.

[0040] A connector interface is disposed in the lower limit component 412 of the battery case, and the battery pack is electrically connected to the device to be powered by the connector assembly 43 via the connector assembly 43 to the left side of the limit column 31. The limiting components 411, 412 cooperate with the limiting post 31 to limit the battery device 4 during operation of the electric pallet, and are the most fixed component of the entire battery device 4, and the connector interface is disposed at the lower limit component 412. In this case, the connection of the connector assembly 43 can be ensured to be stable and stable, thereby ensuring stable operation of the power supply system of the entire electric pallet truck.

[0041] The entire frame of the electric pallet consists essentially of only two connecting frame tubes and simplifies the construction of most of the cabinets. As a result, the weight of the entire truck is greatly reduced, and the capacity requirement of the battery pack is reduced, so that the weight of the entire battery unit is only 28 kg. The reduction in the weight of the battery unit not only further reduces the weight of the entire electric vehicle body, but also simplifies the installation process of the entire battery unit. With a handle on the top of the battery case, an adult can pick up a battery pack of less than 30kg on his or her own personal strength. As shown in FIG. 4, when the battery device of the electric pallet truck is exhausted, it is only necessary to pull out the connector assembly of the electric pallet truck from the connector interface of the battery casing, and then quickly pick up the handle of the battery casing. The battery device is taken along the limit column, through the extension of the skeleton tube and the upward battery mounting opening formed by the top cover. Similarly, the handle on the battery case of the battery device with sufficient power is placed in the discharge space through the battery installation port, and the limit column is placed between the upper and lower limit components of the battery case. Push the battery unit down into the sump space to complete the installation.

[0042] As shown in FIG. 6, the drive wheel device 8 includes a drive wheel frame 81 and a drive wheel 82. The drive wheel frame 81 includes a bearing housing 811 mounted above the drive wheel 82 and a guard disposed outside the drive wheel 82 via the bracket 812. The protective device is a tubular protective tube, comprising a positive protective tube 8131 horizontally disposed directly in front of the driving wheel 82, and a side protective tube 8132 which is inclined upwardly connected to the bracket on both sides of the positive protective tube 8131, the positive protective tube 8131 and the side protective tube 8 A circular arc tube 8133 is smoothed between 132 to achieve a smooth transition. The inclined side protection tube 8132 causes the guard to form a guard slope above the front guard tube 8131, and the guard distance between the slope and the drive wheel 82 varies with the height thereof, more in line with the shape of the circular drive wheel. The same size also saves the three-dimensional space occupied by the guard. The side protection tube 8132 is inclined on both sides of the positive protection tube 8131 to connect the bracket 8 12, a part of the vertical direction force received by the positive protection tube 8131 is decomposed to the horizontal direction, and the force of the connection point between the side protection tube 8132 and the positive protection tube 8131 and the bracket 812 is relieved, and the connection strength is improved. The operator controls the electric pallet truck in front of the electric pallet truck by operating the handle 6. The operator's line of sight is from top to bottom onto the guard. The inclined side guard tube 8132 increases the portion of the guard that is seen by the operator. , easy to attract the attention of the operator. Furthermore, the color design of the guard can be made eye-catching and can serve as a warning.

[0043] As shown in FIG. 7, the bracket mounting portion 8111 is provided on both sides of the bearing housing 811. The bracket 812 is provided with a U-shaped mounting slot that is engaged with the bracket mounting seat 8111, and the opening of the U-shaped mounting slot faces the rear of the driving wheel 82. The mounting slot includes a mounting section 81212 that is engaged with the bracket mount 8111, and a tightening section 81211 that is formed by the mounting section 81212 extending toward the rear end of the bracket. The width of the tightening section 81211 is smaller than the width of the mounting section. The rear end of the bracket 812 is provided with a protective pipe joint 8122 for mounting the side guard tube 8132, a driven wheel mount 812 3 for mounting the driven wheel, and a linkage wheel mounting groove; the driven wheel mount 8123 is disposed under the protective pipe joint 8122 A protective tube rib is disposed between the side guard tube 8132 and the driven wheel mount 8123. The hinge seat is disposed behind the guard tube interface 8122, and the rocker arm mechanism of the frame body is hinged in the hinge seat. A rocker arm rocker protection cover is placed above the hinged seat. The rocker arm rocker protection cover reserves a rotatable movable space for the rocker arm mechanism so that there is no obstruction during the rotation.

[0044] In order to comply with the relevant safety standards, the installation height h (Fig. 8, 8) of the positive protection pipe and the horizontal distance 1 between the positive protection pipe and the drive wheel (Fig. 8) need to meet the requirements shown in Fig. 9. The curve relationship, as can be seen from the curve of Fig. 9, the installation position of the positive protective tube should not be too high. However, the fork located behind the electric pallet truck can be lifted to a certain height from the ground under the action of the hydraulic pumping station system. Therefore, the entire electric truck is only located at the front of the driving wheel without leaving the ground, for the whole cargo The fork portion is supported. Two driven wheels are provided on both sides of the drive wheel 82 to maintain the stability of the top lift electric vehicle body. The side protection tube 8 132 is inclined to the upper connection bracket 812, and raises the height of the connection point of the side protection tube 8132 on both sides of the driving wheel 82 and the bracket 812, and provides installation space for the driven wheel also mounted on both sides of the driving wheel 82. It also ensures that the positive protection tube has a lower installation height that meets safety standards.

[0045] The guard and the bracket can be produced in one piece and directly mounted on the driving device. It is also possible to assemble the parts in the way of assembly. In the form of a combination of parts, as long as the interface is unified, different guards can be installed on the same bracket as needed. The entire guard is connected to the frame The bearing housing and the two driven wheels on both sides form

[0046] The triangular stable connection structure is provided with a protective tube rib between the side protection tube 8132 and the driven wheel mounting seat 81222, so that the structure of the protection device is more stable.

10-12, the cable box 9 is used to manage and place the interconnected wires connecting the battery and the electronic control unit. The housing is mounted on the frame, and the wires disposed within the housing. In order to facilitate the management and placement of the wiring, the wires between the battery and the electronic control device are simple and orderly. The positive and negative power lines between the battery and the rotating device are enclosed in a sealed tube to form a wire as a whole.

[0048] The electric wire includes a first direction section 921, a second direction section 922, and a spiral section disposed between the first direction section 921 and the second direction section 921. The spiral section is arranged in a planar spiral shape in the outer casing. The spiral section is wound at least twice, and the outermost one with the largest radius is the outer ring 9231, and the innermost one with the smallest radius is the inner ring 9232.

[0049] The outer casing has a shell bottom 911 for carrying a spiral portion of a plane spiral, a shell wall 912 enclosing the spiral portion in three directions of a plane in which the spiral portion of the plane spirals, and a spiral spiral in a plane The upper portion of the segment connects the cover 913 of the casing wall 912. The casing wall 912 forms a lateral weir in the fourth direction of the spiral section, one end of the first direction section 921 is connected to the outer ring 9231 of the spiral section, and the other end is connected to the battery via a lateral port. The bottom portion of the case bottom 911 corresponding to the inner ring is provided with a bottom opening, and the cover 913 covers only a part of the area of the spiral portion, and a top opening is formed above the inner ring.

[0050] One end of the second direction segment is connected to the inner ring 9232 of the spiral segment, and the other end can be connected to the electronic control device via the top opening space or the bottom opening. The electronic control unit can even pass through the entire cable box through the bottom opening, the inner ring, and the top opening space. Therefore, the electric control device can be installed above, below, or even in the wire box of the wire box, so that the position of the wire box is flexible to adapt to various environments.

[0051] The width of the lateral cornice is preferably greater than or equal to the diameter of the outer ring 9231 so that the side of the entire spiral segment is exposed, and the wire can be installed in the outer casing in the direction of the smooth needle or the reverse needle, and then the side is selected. Extend the outer casing to one end of the mouthpiece to connect to the battery. Save the length of the wire as much as possible, adjust the connection angle between the first direction segment and the battery, and improve the connection stability. A clip mounting portion 9122 for mounting the clip 9121 may be disposed at both ends of the lateral port. The clip 9121 is an annular structure sleeved outside the first direction segment, and the bottom portion thereof is fixedly connected to the case bottom 911. The first direction segment is secured in the housing by clips 9121. [0052] When the electronic control device moves relative to the battery, the second direction segment 922 connected to the electronic control device moves with the movement of the electronic control device, causing the segment 923 connected thereto to move with it. The displacement of the second direction segment 922 is converted to a change in the radius of the inner circle 9232 of the spiral segment. The outer ring 9231 of the spiral segment is not affected by the radius change of the inner ring 9 232, and the first direction segment connected thereto is fixed in the outer casing by the wire clamp, and can be prevented from being affected by the displacement change of the second direction segment 922, and is kept opposite to the battery. fixed. In the cable box of the embodiment, the connection line between the battery and the electric control device connected to each other in the vertical direction is spirally wound around the outer casing, which simplifies the line, reduces the space occupied by the wire box, and facilitates the line. Repair and management. When the operating handle moves relative to the frame to drive the electric control device to move relative to the battery mounted on the forklift, the second direction segment is displaced with the movement of the operating handle and the first direction segment. The spiral segment converts the motion of the second direction segment into a change in the radius of the inner ring. The outer ring of the spiral segment and the rest of the cable box remain fixed. And the movement of the second direction section is performed in the space inside the wire box, and does not rub against the outer casing.

While the embodiments of the present invention have been described with reference to the drawings, various modifications and changes may be made in the scope of the appended claims.

Claims

Claim

The utility model relates to a pick-up electric pallet truck, which comprises a frame, a fork, a top cover, a hydraulic pump station, an operating handle, an electric control device and a driving wheel device for driving the truck to travel. The utility model is characterized in that: the frame connection The top cover and the fork, and a storage space for mounting a battery device above the fork; the hydraulic pump station, the operating handle, the electric control device, and the driving wheel The device is mounted on a side remote from the fork; the truck is provided with a cable box electrically connected to the battery device and the electronic control device for supplying power to the truck.

The portable electric transport vehicle according to claim 1, wherein: the accommodating space includes at least a battery mounting port disposed at an upper side, a battery maintenance port disposed at a side, and a limiting device; The battery device includes a battery pack having a battery housing, the battery housing being provided with a connector interface for outputting a voltage or current through the connector assembly to power the electric pallet truck.

A pick-up electric pallet truck according to claim 2, wherein: the frame comprises a skeleton tube connecting two forks on both sides of the top cover; the skeleton tube includes an extension portion and a vertical section; one end of the extension is connected to the top cover and extends in a direction away from the top cover in a length direction of the fork, the vertical section vertically connecting the other end of the extension And the fork.

A pick-up electric pallet truck according to claim 3, wherein: said limiting device comprises a limiting pillar vertically disposed under said top cover, said battery casing being at said limiting pillar An upper limit component and a lower limit component having different heights are provided on both sides; one of the limit components is provided with a connector interface.

A pick-up electric pallet truck according to claim 1, wherein: said drive wheel device comprises a drive wheel and a drive wheel carrier; said drive wheel carrier includes a wheel mount mounting portion for connecting the drive wheel, and The wheel frame mounting portion is provided with a guard device in front of the driving wheel; the guard device includes a guard portion disposed in front of the driving wheel, and an inspection portion disposed between the guard portion and the wheel frame mounting portion.

A pick-up electric pallet truck according to claim 5, wherein: The protection portion is a tubular positive protection tube, and the protection device comprises a side protection tube that is obliquely connected upwardly on both sides of the front protection tube to the wheel frame installation portion, the inspection portion includes the positive protection tube and the An access window formed by the side guard tube above the drive wheel.

A pick-up electric pallet truck according to claim 6, wherein: the wheel carrier mounting portion includes a bearing seat mounted above the driving wheel, and a bracket disposed on both sides of the bearing housing; The head end of the bracket is connected to the bearing seat, and the tail end of the bracket is connected to the side guard tube.

A pick-up electric pallet truck according to claim 7, wherein: the tail end of the bracket is provided with a hinge seat, and the fork is hinged to the hinge seat by its rocker arm mechanism. A pick-up electric pallet truck according to claim 1, wherein: said wire spool includes a casing mounted to said drive wheel means, and an electric wire disposed in said casing; said wire a spiral wound around the outer casing, the electric wire comprising a first direction section laterally connecting the battery in the outer casing, a second direction section connecting the electric control device in a longitudinal direction of the outer casing, and being disposed at the a spiral segment between the first direction segment and the second direction segment; the spiral segment includes an inner ring having a minimum radius and an outer ring having a largest radius, the first direction segment connecting the outer portion of the spiral segment a second direction segment connecting the inner circumference of the spiral segment.

The portable electric vehicle according to claim 9, wherein: a casing wall of the outer casing is provided with a lateral opening, and a width of the lateral cornice is larger than a diameter of the outer ring; a second direction segment extending to the outside of the outer casing via the lateral mortise; the lateral mortise opening is provided with a clamp mounting portion for mounting a clamp, the clamp can be fixedly connected to the outer casing and the first One direction segment.