A plug-in portable handling trolley

Abstract

The application belongs to the technical field of carrier design, and particularly relates to a plug-in portable carrier, which is modularly designed in a hand-operated hydraulic power system, a storage system and a carrier body, and uses the carrier body as a carrier of the system, on which the hand-operated hydraulic power system and the storage system are installed, and the carrier body is assembled conveniently, and the hand-operated hydraulic power system replaces the combination of a storage battery and a direct current motor, can provide hydraulic power in a manual mode, adjusts the height of the storage system, meets the height requirement of heavy object carrying, does not significantly increase the weight of the carrier, does not need frequent charging, does not need additional waterproof design, is easy to arrange the structure, and in addition, the hand-operated hydraulic power system is connected to the carrier body in a plug-in mode, can be easily detached from the carrier body when not needed, and reduces the weight of the carrier.

Description

Technical Field

[0001] This application belongs to the field of transport vehicle design technology, specifically relating to a plug-in portable transport vehicle. Background Technology

[0002] In industrial manufacturing, food processing and other production activities, heavy objects need to be moved, so trolleys are designed for this purpose.

[0003] Currently, the main structural form of transport trolleys is fixed, with the height of the heavy object placement platform not adjustable and the trolley itself unable to lift heavy objects. The few transport trolleys with adjustable platforms mostly use battery energy storage combined with DC motor to drive the adjustable platform lifting, resulting in a large counterweight of the transport trolley, requiring frequent charging, adding waterproof design, and making it difficult to arrange the structure. In view of this, this application is made. Summary of the Invention

[0004] The purpose of this application is to provide a plug-in portable transport cart to overcome or mitigate at least one of the known technical defects.

[0005] The technical solution of this application is:

[0006] A plug-in portable transport trolley includes a manual hydraulic power system, a storage system, and a transport trolley body;

[0007] The transport vehicle body includes lifting cylinders and a frame. The frame includes a base plate and two side walls. The two side walls are connected to the upper side of the base plate and have vertical slots and multiple horizontal slots. There are four lifting cylinders, which are installed on the base plate.

[0008] The storage system includes a storage platform, push-pull cylinders, and telescopic plates. The storage platform has positioning grooves on both sides, a mounting groove on the bottom wall, and four positioning holes. The piston rods of the four lifting cylinders are positioned in the four positioning holes, allowing the height of the storage platform to be adjusted. There are two telescopic plates, each set in one of the positioning grooves. There are also two push-pull cylinders, each set in the mounting groove. The piston rods of the push-pull cylinders are connected to the two telescopic plates, allowing the telescopic plates to extend or retract into the two positioning grooves. When extended outside the positioning grooves, the telescopic plates can engage with the corresponding horizontal slots on the two side walls of the transport vehicle frame.

[0009] The manual hydraulic power system includes a housing, an oil outlet control screw, an oil outlet control plug, a manual booster piston, an oil reservoir, and a manual booster pump. The housing has guide protrusions on two opposite side walls, which are engaged in two vertical slots. The reservoir contains an oil outlet channel, a booster chamber, an oil outlet port, and a return port. The oil outlet channel connects the oil reservoir and the booster chamber, and the manual booster pump and oil outlet control plug are sequentially mounted thereon. A screw is connected to the manual booster piston within the booster chamber, extending through an opening in the housing and threadedly engaging with it. The oil outlet control screw is threaded into the housing and can be screwed into or out of the oil outlet port. The oil outlet port connects to the booster chamber; the return port connects to the oil reservoir. The oil outlet port and return port are connected via pipelines to the oil passages on four lifting cylinders and two push-pull cylinders.

[0010] According to at least one embodiment of this application, in the above-described insert-type portable transport trolley, the lifting cylinders in the transport trolley body are divided into two pairs;

[0011] The transport vehicle also includes a lifting shaft and a rotating handwheel;

[0012] There are two lifting shafts, which are horizontally set and mesh with the teeth between the cylinders of two pairs of lifting cylinders. Both ends are connected to the two side walls of the frame, with one end extending out to the corresponding side wall of the frame.

[0013] There are two rotary handwheels, which are connected to the ends of the two lifting shafts that protrude from the corresponding side walls of the frame. In this way, the lifting shafts can be driven to rotate by the two rotary handwheels, thereby adjusting the height of the two pairs of lifting cylinders.

[0014] According to at least one embodiment of this application, the above-described plug-in portable transport trolley further includes guide columns and rollers, wherein there are four guide columns connected to the base plate of the frame; and four rollers are mounted on the base of the frame.

[0015] The storage system is rectangular, with guide holes at the four corners, and threaded sleeves installed in the four guide holes; the four threaded sleeves can rotate in the guide holes and are screwed onto the four guide posts.

[0016] According to at least one embodiment of this application, in the above-described insert-type portable transport trolley, the storage system further includes a push-pull plate and a cylinder liner;

[0017] There are two push-pull plates, which are set in the mounting slots to connect the two telescopic plates and the piston rods that connect the two push-pull cylinders;

[0018] The cylinder liner is fitted onto the cylinder body of the two push-pull cylinders and fixed in the mounting groove by a pressure plate.

[0019] According to at least one embodiment of this application, in the above-described plug-in portable transport trolley, the storage platform in the storage system has four oil passages.

[0020] The cylinder liner has four openings to allow the oil passages on the two push-pull cylinders to connect with the four oil passages;

[0021] Four oil passages are connected to one side wall of the platform, and are connected to the oil outlet and return port on the box via pipelines.

[0022] According to at least one embodiment of this application, the above-described insert-type portable transport cart further includes a handle;

[0023] There are two handles, which are installed on the top wall of the shelf.

[0024] According to at least one embodiment of this application, in the above-mentioned plug-in portable handling trolley, in the manual hydraulic power system, one end of the oil outlet control screw protrudes outside the housing, and the other end of the oil outlet control screw can be screwed into or out of the oil outlet by turning the oil outlet control screw with the one end protruding outside the housing, thereby changing the effective flow area of ​​the oil outlet.

[0025] The control end of the oil outlet control plug extends through the opening on the housing. The control end can be turned to screw the oil outlet control plug into or out of the oil outlet channel, thereby changing the effective flow area of ​​the oil outlet channel.

[0026] The input shaft of the manual booster pump extends through an opening on the housing, in which a sealing plug is installed. The input shaft of the manual booster pump is connected to the booster pump drive handle, which can drive the manual booster pump.

[0027] The connecting screw on the manual booster piston extends through the opening on the housing and connects to the booster piston drive handle.

[0028] According to at least one embodiment of this application, in the above-described insert-type portable transport trolley, the oil reservoir in the manual hydraulic power system is located at an upper position inside the box.

[0029] The housing also has an oil inlet and an oil outlet;

[0030] The oil filling port is located at the top of the tank and connects to the oil storage tank, where an oil filling plug is installed;

[0031] The oil drain port is connected to the oil outlet channel and is located at the bottom of the tank, where a sealing plug is installed;

[0032] The connection between the oil outlet channel and the booster chamber is located between the bottom wall of the booster chamber and the manual booster piston;

[0033] The connection between the oil outlet and the booster chamber is located between the bottom wall of the booster chamber and the manual booster piston.

[0034] According to at least one embodiment of this application, the above-described insert-type portable transport trolley further includes:

[0035] The hoisting system is connected to the top of the two side walls of the transport vehicle frame and is used to hoist and adjust heavy objects.

[0036] According to at least one embodiment of this application, in the above-described insert-type portable handling trolley, the lifting system includes a lifting frame, a crank handle, a reel, a lifting rope, and a hook;

[0037] The crank handle is mounted on the lifting frame via bearings;

[0038] The roller is connected to the crank handle;

[0039] One end of the lifting rope is connected to a reel, and the other end is connected to a hook. By turning the handle, the reel can be rotated to wind up and unwind the lifting rope and hook, and the hook can be used to hang and adjust heavy objects.

[0040] This application has at least the following beneficial technical effects:

[0041] A plug-in portable transport trolley is provided, which is modularly designed to consist of a manual hydraulic power system, a storage system, a lifting system, and a transport trolley body. The transport trolley body serves as the system carrier, on which the manual hydraulic power system, storage system, and lifting system are installed. Assembly is convenient, and the manual hydraulic power system replaces the combination of battery storage and DC motor. It can provide hydraulic power manually to adjust the height of the storage system to meet the height requirements of heavy object handling without significantly increasing the counterweight of the transport trolley. It does not require frequent charging, does not require additional waterproofing design, and is easy to lay out. In addition, the manual hydraulic power system is connected to the transport trolley body in a plug-in manner, and can be easily removed from the transport trolley body when not in use, reducing the counterweight of the transport trolley. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the plug-in portable transport cart provided in the embodiments of this application;

[0043] Figure 2 This is a schematic diagram of the external appearance of the manual hydraulic power system provided in the embodiments of this application;

[0044] Figure 3 This is a cross-sectional view of the manual hydraulic power system provided in the embodiments of this application;

[0045] Figure 4 This is a schematic diagram of the storage system provided in an embodiment of this application from one angle;

[0046] Figure 5 This is a schematic diagram of the storage system provided in an embodiment of this application from another angle;

[0047] Figure 6 This is a schematic diagram of the hoisting system provided in the embodiments of this application;

[0048] Figure 7 This is a schematic diagram of the transport vehicle body provided in the embodiments of this application;

[0049] in:

[0050] 1-Manual hydraulic power system; 2-Storage system; 3-Lifting system; 4-Transport vehicle body;

[0051] 1.1-Box housing; 1.2-Booster piston drive handle; 1.3-Oil outlet control screw; 1.4-Oil outlet control plug; 1.5-Sealing plug; 1.6-Oil filling plug; 1.7-Manual booster piston; 1.8-Oil reservoir; 1.9-Oil filling plug; 1.10-Sealing plug; 1.11-Manual booster pump;

[0052] 2.1-Handle; 2.2-Telescopic plate; 2.3-Push-pull plate; 2.4-Push-pull cylinder; 2.5-Cylinder liner; 2.6-Showcase;

[0053] 3.1-Lifting frame; 3.2-Crank handle; 3.3-Reel; 3.4-Lifting rope; 3.5-Hook;

[0054] 4.1-Lifting cylinder; 4.2-Lifting shaft; 4.3-Roller; 4.4-Guide column; 4.5-Rotating handwheel; 4.6-Frame;

[0055] A-Oil inlet; B-Oil outlet channel; C-Pressure chamber; D-Oil return port; E-Oil drain port; F-Oil passage; G-Guide hole; H-Positioning hole; I-Vertical groove; J-Horizontal groove.

[0056] To better illustrate this embodiment, some parts in the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the actual size of the product. Furthermore, the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Detailed Implementation

[0057] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, and other related parts can be referred to the general design.

[0058] Furthermore, unless otherwise defined, the technical or scientific terms used in this application description shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms indicating direction used in this application description are used only to indicate relative direction or positional relationship; when the absolute position of the described object changes, its relative positional relationship may also change accordingly. The word "comprising" as used in this application description indicates that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, but does not exclude other elements or objects.

[0059] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, terms such as "installation" and "connection" used in the description of this application should be interpreted broadly. For example, a connection can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand its specific meaning in this application according to the specific circumstances.

[0060] A plug-in portable transport trolley includes a manual hydraulic power system 1, a placement system 2, a lifting system 3, and a transport vehicle body 4, such as Figure 1 As stated above.

[0061] The manual hydraulic power system 1 can provide hydraulic pressure manually, specifically including a housing 1.1, a booster piston drive handle 1.2, an oil outlet control screw 1.3, an oil outlet control plug 1.4, a sealing plug 1.5, a booster pump drive handle 1.6, a manual booster piston 1.7, an oil reservoir 1.8, an oil filling plug 1.9, a sealing plug 1.10, and a manual booster pump 1.11, etc. Figures 2-3 As shown.

[0062] The housing 1.1 serves as the carrier for the manual hydraulic power system 1. It has guide protrusions on two opposite side walls, each with an oil inlet A, an oil outlet channel B, a pressure boosting chamber C, an oil outlet, an oil return port D, and an oil drain port E. An oil reservoir 1.8 is located inside the housing 1.1, slightly above the center. Housing 1.1

[0063] Oil inlet A is located at the top of the housing 1.1 and connects to the oil storage tank 1.8. Oil can be added to the oil storage tank 1.8 through oil inlet A. After the oil is added, it can be sealed with the oil plug 1.9.

[0064] Oil outlet channel B connects oil storage tank 1.8 and pressurization chamber C. Oil in oil storage tank 1.8 can flow to pressurization chamber C through oil outlet channel B. A manual booster pump 1.11 and an oil outlet control plug 1.4 are installed in oil outlet channel B. The input shaft of the manual booster pump 1.11 extends through an opening on housing 1.1 and connects to a booster pump drive handle 1.6. Thus, the manual booster pump 1.11 can be driven from outside housing 1.1 via the booster pump drive handle 1.6 to supply oil to the oil outlet channel B. The oil is pressurized. To prevent oil leakage from the corresponding opening, a sealing plug 1.5 is installed in the opening. The oil outlet control plug 1.4 is located downstream of the manual booster pump 1.11. Its control end extends through the opening on the housing 1.1. Thus, the oil outlet control plug 1.4 can be turned from outside the housing 1.1 by turning the control end to screw the oil outlet control plug 1.4 into or out of the oil outlet channel B, thereby changing the effective flow area of ​​the oil outlet channel B and adjusting the flow rate of the oil in the oil outlet channel B.

[0065] A manual booster piston 1.7 is installed inside the booster chamber C. The connection point between the piston and the oil outlet channel B is located between the bottom wall of the booster chamber C and the manual booster piston 1.7. A screw is connected to the manual booster piston 1.7. The screw extends through an opening on the housing 1.1 and is threadedly connected to the opening. It is connected to the booster piston drive handle 1.2. Thus, the manual booster piston 1.7 can be moved in the booster chamber C by turning the screw through the piston drive handle 1.2 from outside the housing 1.1, so as to compress the oil flowing into the booster chamber C and boost its pressure.

[0066] The oil outlet connects to the booster chamber C, with the connection point located between the bottom wall of booster chamber C and the manual booster piston 1.7. Oil flowing into booster chamber C can exit through the oil outlet. An oil outlet control screw 1.3 is threaded onto the housing 1.1. One end of the oil outlet control screw 1.3 protrudes outside the housing 1.1, while the other end extends into the oil outlet. Thus, by turning the end of the oil outlet control screw 1.3 protruding outside the housing 1.1, the other end of the oil outlet control screw 1.3 can be screwed into or out of the oil outlet, changing the effective flow area of ​​the oil outlet and adjusting the flow rate of oil in the outlet.

[0067] The return port D is connected to the oil storage tank 1.8 so that the oil flowing out of the oil outlet can flow back into the tank 1.1.

[0068] Oil drain port E is connected to oil outlet channel B and is located at the bottom of tank 1.1. It can drain the oil in tank 1.1 and oil outlet channel B to facilitate inspection and maintenance. After draining, it is sealed with sealing plug 1.10.

[0069] The storage system 2 is slidably connected to the transport vehicle body 4, and includes a handle 2.1, a telescopic plate 2.2, a push-pull plate 2.3, a push-pull cylinder 2.4, a cylinder liner 2.5, and a storage platform 2.6, as shown below. Figures 4-5 As shown.

[0070] The shelf 2.6 is rectangular and can hold heavy objects. It has four oil passages F, positioning grooves on both sides, mounting grooves and four positioning holes H on the bottom wall, and guide holes G at the four corners. Two positioning grooves are connected to the mounting groove, the mounting groove is connected to the four oil passages F, and the four oil passages F are connected to one side wall of the shelf 2.6, which is not the side wall with the positioning groove.

[0071] There are two telescopic plates 2.2, which are set in two positioning slots.

[0072] There are two push-pull plates 2.3, which are set in the mounting slot and connect to two telescopic plates 2.2.

[0073] There are two push-pull cylinders 2.4, which are installed in the mounting slot. The piston rods of the cylinders are connected to two push-pull plates 2.3. The oil passages on the cylinders are connected to four oil passages F. The four oil passages F are connected to the oil outlet and oil return port D on the housing 1.1 through pipelines. In this way, the oil from the manual hydraulic power system 1 can be used to drive the piston rods of the two push-pull cylinders 2.4 to extend and retract, thereby pushing and pulling the two push-pull plates 2.3 and the telescopic plates 2.2, so that the two telescopic plates 2.2 extend or retract into the two positioning slots.

[0074] Cylinder liner 2.5 is fitted onto the cylinder body of two push-pull cylinders 2.4 and fixed in the mounting groove by a pressure plate. It has four openings for the oil passage holes on the two push-pull cylinders 2.4 to communicate with the four oil passages F.

[0075] There are two handles 2.1, which are installed on the top wall of the shelf 2.6, near the side wall of the shelf 2.6 where the two telescopic plates 2.2 are located.

[0076] The hoisting system 3 includes a hoisting frame 3.1, a crank handle 3.2, a reel 3.3, hoisting ropes 3.4, and a hook 3.5, such as... Figure 6 As shown.

[0077] The crank handle 3.2 is mounted on the lifting frame 3.1 via a bearing.

[0078] The roller 3.3 is connected to the crank handle 3.2.

[0079] One end of the lifting rope 3.4 is connected to the reel 3.3, and the other end is connected to the hook 3.5. The reel 3.3 can be rotated by turning the handle 3.2 to wind up and unwind the lifting rope 3.4 and its hook 3.5. In this way, the hook 3.5 can be used to hang and adjust heavy objects.

[0080] The transport vehicle 4 serves as the system's moving carrier, on which are installed a manual hydraulic power system 1, a loading system 2, and a hoisting system 3, including lifting cylinders 4.1, lifting shafts 4.2, rollers 4.3, guide columns 4.4, rotating handwheels 4.5, and a frame 4.6, such as... Figure 7 As shown.

[0081] The frame 4.6 includes a base plate and two side walls, which are connected to the base plate by a crossbeam. The crossbeam is located near one edge of the two side walls at a corner. The inner sides of the two side walls have vertical slots I and multiple horizontal slots J. The two vertical slots I are located near the other edge of the two side walls. Guide protrusions on the two opposing side walls of the housing 1.1 engage with the vertical slots I on the inner sides of the two side walls of the frame 4.6, thereby enabling the manual hydraulic power system 1 to be inserted into the transport vehicle 4. The lifting frame 3.1 in the lifting system 3 is connected to the top of the two side walls of the frame 4.6.

[0082] There are four rollers 4.3, which are installed on the bottom plate of the frame 4.6 to facilitate the transfer of the vehicle body 4.

[0083] There are two pairs of lifting cylinders 4.1, mounted on the bottom plate of the frame 4.6. Their piston rods rest in four positioning holes H on the bottom wall of the platform 2.6. Oil passages on these cylinders are connected via pipelines to the oil outlet and return port D on the housing 1.1. This allows the hydraulic fluid from the manual hydraulic power system 1 to drive the piston rods of the two pairs of lifting cylinders 4.1 to extend and retract, adjusting the height of the platform 2.6. After the height of the platform 2.6 is adjusted, the hydraulic fluid from the manual hydraulic power system 1 can be used to drive the piston rods of the two push-pull cylinders 2.4 to extend outward, pushing the two push-pull plates 2.3 outward. The telescopic plates 2.2 extend out of the two positioning slots and engage with the corresponding horizontal slots J on the two side walls of the frame 4.1, thus reliably fixing the height of the storage platform 2.6. When the height of the storage platform 2.6 needs to be adjusted again, the oil from the manual hydraulic power system 1 can be used to drive the piston rods of the two push-pull cylinders 2.4 to retract inward, pulling the two push-pull plates 2.3 and the telescopic plates 2.2 inward, so that the two telescopic plates 2.2 retract into the two positioning slots and disengage from the corresponding horizontal slots J on the two side walls of the frame 4.1.

[0084] There are two lifting shafts 4.2, which are horizontally set and mesh with the teeth between the cylinders of the two pairs of lifting cylinders 4.1. Both ends are connected to the two side walls of the frame 4.6, with one end extending out to the corresponding side wall of the frame 4.6.

[0085] There are two rotating handwheels 4.5, connected to the ends of the two lifting shafts 4.2 that protrude from the corresponding side walls of the frame 4.6. This allows the lifting shafts 4.2 to rotate via the two handwheels 4.5, adjusting the height of the two pairs of lifting cylinders 4.1 to supplement the height adjustment capability of the lifting cylinders 4.1, enabling height adjustment of the platform 2.6 over a wider range. To prevent lateral deviation of the lifting cylinders 4.1 during this process, stop protrusions can be installed on the frame base plate or the two side walls to limit the movement of the two pairs of lifting cylinders 4.1 and maintain the meshing of the teeth between the lifting cylinders 4.1 and the lifting shafts 4.2. Furthermore, multiple pin holes can be made in the cylinder bodies of the two pairs of lifting cylinders 4.1 and on the two side walls of the frame 4.1. After adjusting the height of the two pairs of lifting cylinders 4.1 to the correct position, pins can be inserted into the corresponding pin holes for reliable fixation. When the height of the two pairs of lifting cylinders 4.1 needs to be adjusted again, the pins can be removed first.

[0086] There are four guide posts 4.4, which are connected to the base plate of the frame 4.1 and pass through the four guide holes G on the platform 2.6 to guide the platform when adjusting its height. In addition, in order to provide a certain positioning function for the platform 2.6, the four guide posts 4.4 can be set as studs, and threaded sleeves can be set in the four guide holes G on the platform 2.6. The four threaded sleeves can rotate in the guide holes G and are screwed onto the four guide posts 4.4.

[0087] Based on the plug-in portable handling trolley disclosed in the above embodiments, the following steps can be used to move heavy objects:

[0088] Using the hydraulic fluid from the manual hydraulic power system 1, two pairs of lifting cylinders 4.1 are driven, and two rotating handwheels 4.5 drive the lifting shaft 4.2, which in turn adjusts the height of the platform 2.6 to the required height.

[0089] Using the oil from the manual hydraulic power system 1, the piston rods of the two push-pull cylinders 2.4 are driven to extend outward, pushing the two push-pull plates 2.3 and the telescopic plate 2.2 outward, so that the two telescopic plates 2.2 extend out of the two positioning slots and are locked into the horizontal slots J of the corresponding height on the two side walls of the frame 4.1, thus fixing the platform 2.6 at the required height;

[0090] Place the heavy object on the platform 2.6. During this process, the hoisting system 3 can be used to hang and adjust the heavy object.

[0091] Push the transport vehicle 4 to move the heavy object to the required location.

[0092] In the plug-in portable transport trolley disclosed in the above embodiments, the two pairs of lifting cylinders 4.1 and their two push-pull cylinders 2.4 are driven by oil from the manual hydraulic power system 1. If high-pressure oil is required, the following steps can be referred to:

[0093] By turning the screw through the piston drive handle 1.2, the manual booster piston 1.7 is driven to move in the booster chamber C, so that the manual booster piston 1.7 moves to the top of the booster chamber C;

[0094] After the oil fills the pressurization chamber C, or reaches a certain height in the pressurization chamber C, the oil outlet control plug 1.4 is turned by the control end to screw the oil outlet control plug 1.4 into the oil outlet channel B, reducing the effective flow area of ​​the oil outlet channel B and reducing the flow rate of oil in the oil outlet channel B, or closing the oil outlet channel B at this point. Also, by turning the oil outlet control screw 1.3, which is exposed outside the housing 1.1, the other end of the oil outlet control screw 1.3 is screwed into the oil outlet to close the oil outlet.

[0095] By turning the screw through the piston drive handle 1.2, the manual booster piston 1.7 is driven to move in the booster chamber C, causing the manual booster piston 1.7 to press down and boost the oil in the booster chamber C;

[0096] After the oil pressure in the booster chamber C increases to the required high pressure, the oil outlet control screw 1.3 protrudes from the outer end of the housing 1.1. Turning the oil outlet control screw 1.3 causes the other end of the oil outlet control screw 1.3 to rotate out to open the oil outlet, supplying oil to the two pairs of lifting cylinders 4.1 and their two push-pull cylinders 2.4.

[0097] In the plug-in portable transport trolley disclosed in the above embodiments, the manual hydraulic power system 1, the placement system 2, the hoisting system 3, and the transport vehicle body 4 are modularly designed. The transport vehicle body 4 serves as the carrier of the system, on which the manual hydraulic power system 1, the placement system 2, and the hoisting system 3 are installed. Assembly is convenient. Moreover, the manual hydraulic power system 1 replaces the combination of battery energy storage and DC motor, which can provide hydraulic power manually to adjust the height of the placement system 2 to meet the height requirements of heavy object transport. It does not significantly increase the counterweight of the transport trolley, does not require frequent charging, does not require additional waterproof design, and is easy to lay out. In addition, the manual hydraulic power system 1 is connected to the transport vehicle body 4 in a plug-in form. When not in use, it can be easily removed from the transport vehicle body 4, reducing the counterweight of the transport trolley.

[0098] The technical solution of this application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A plug-in portable handling trolley, characterized in that Includes a manual hydraulic power system (1), a storage system (2), and a transport vehicle body (4); The transport vehicle body (4) includes lifting cylinders (4.1) and a frame (4.6). The frame (4.6) includes a base plate and two side walls. The two side walls are connected to the upper side of the base plate and have vertical slots (I) and multiple horizontal slots (J). There are four lifting cylinders (4.1) and they are set on the base plate. The storage system (2) includes a storage platform (2.6), a push-pull cylinder (2.4), and a telescopic plate (2.2). The storage platform (2.6) has positioning grooves on both sides, an installation groove on the bottom wall, and four positioning holes (H). The piston rods of the four lifting cylinders (4.1) are placed in the four positioning holes (H) to adjust the height of the storage platform (2.6). There are two telescopic plates (2.2), which are set in the two positioning grooves. There are two push-pull cylinders (2.4), which are set in the installation grooves. The piston rods on the cylinders are connected to the two telescopic plates (2.2) to drive the telescopic plates (2.2) to extend or retract into the two positioning grooves. When extended outside the positioning grooves, they can be inserted into the horizontal slots (J) of the corresponding height on the two side walls of the frame (4.6) of the transport vehicle body (4). The manual hydraulic power system (1) includes a housing (1.1), an oil outlet control screw (1.3), an oil outlet control plug (1.4), a manual booster piston (1.7), an oil reservoir (1.8), and a manual booster pump (1.11). The housing (1.1) has guide protrusions on two opposite side walls, which are engaged in two vertical slots (I). An oil reservoir (1.8) is provided inside, with an oil outlet channel (B), a booster chamber (C), an oil outlet, and a return port (D). The oil outlet channel (B) connects the oil reservoir (1.8) and the booster chamber (C), and is equipped with... The system includes a manual booster pump (1.11) and an oil outlet control screw (1.4). A manual booster piston (1.7) with a connecting screw is installed inside the booster chamber (C). The screw extends through an opening in the housing (1.1) and is threaded into the opening. The oil outlet control screw (1.3) is threaded into the housing (1.1) and can be screwed into or out of the oil outlet by turning it. The oil outlet is connected to the booster chamber (C). The oil return port is connected to the oil storage tank (1.8). The oil outlet and oil return port (D) are connected to the oil passages on the four lifting cylinders (4.1) and the two push-pull cylinders (2.4) through pipelines.

2. The plug-in portable transport trolley according to claim 1, characterized in that, The lifting cylinders (4.1) in the transport vehicle body (4) are divided into two pairs; The transport vehicle body (4) also includes a lifting shaft (4.2) and a rotating handwheel (4.5); There are two lifting shafts (4.2), which are horizontally set and mesh with the teeth of the cylinder bodies of two pairs of lifting cylinders (4.1). Both ends are connected to the two side walls of the frame (4.6), with one end extending out to the corresponding side wall of the frame (4.6). There are two rotating handwheels (4.5), which are connected to one end of the two lifting shafts (4.2) that protrude from the frame (4.6) and are on the corresponding side wall. In this way, the lifting shafts (4.2) can be driven to rotate by the two rotating handwheels (4.5) to adjust the height of the two pairs of lifting cylinders (4.1).

3. The plug-in portable transport trolley according to claim 2, characterized in that, The transport vehicle body (4) also includes guide columns (4.4) and rollers (4.3). There are four guide columns (4.4) connected to the base plate of the frame (4.1); there are four rollers (4.3) mounted on the base of the frame (4.6). The storage system (2) is rectangular, with guide holes (G) at the four corners, and threaded sleeves are installed in the four guide holes (G); the four threaded sleeves can rotate in the guide holes (G) and are screwed onto the four guide posts (4.4).

4. The plug-in portable transport trolley according to claim 1, characterized in that, The storage system (2) also includes a push-pull plate (2.3) and a cylinder liner (2.5); There are two push-pull plates (2.3), which are set in the mounting groove and connect the two telescopic plates (2.2) and the piston rods of the two push-pull cylinders (2.4); The cylinder liner (2.5) is fitted onto the cylinder body of the two push-pull cylinders (2.4) and fixed in the mounting groove by a pressure plate.

5. The plug-in portable transport trolley according to claim 4, characterized in that, The storage system (2) has four oil passages (F) on the storage platform (2.6); The cylinder liner (2.5) has four openings for the oil passages on the two push-pull cylinders (2.4) to connect with the four oil passages (F); Four oil passages (F) are connected to one side wall of the platform (2.6), and are connected to the oil outlet and oil return port (D) on the box (1.1) through pipelines.

6. The plug-in portable transport trolley according to claim 5, characterized in that, The storage system (2) also includes a handle (2.1); There are two handles (2.1), which are installed on the top wall of the shelf (2.6).

7. The plug-in portable transport trolley according to claim 1, characterized in that, In the manual hydraulic power system (1), one end of the oil outlet control screw (1.3) is exposed outside the housing (1.1). By turning the oil outlet control screw (1.3) at the end exposed outside the housing (1.1), the other end of the oil outlet control screw (1.3) can be screwed into or out of the oil outlet, thereby changing the effective flow area of ​​the oil outlet. The control end of the oil outlet control screw plug (1.4) extends through the opening on the housing (1.1). The control end can be turned to screw the oil outlet control screw plug (1.4) into or out of the oil outlet channel (B), thereby changing the effective flow area of ​​the oil outlet channel (B). The input shaft of the manual booster pump (1.11) extends through an opening in the housing (1.1), in which a sealing plug (1.5) is installed. The input shaft of the manual booster pump (1.11) is connected to the booster pump drive handle (1.6), which can drive the manual booster pump (1.11). The connecting screw on the manual booster piston (1.7) extends through the opening on the housing (1.1) and connects to the booster piston drive handle (1.2).

8. The plug-in portable transport trolley according to claim 7, characterized in that, In the manual hydraulic power system (1), the oil reservoir (1.8) is located at the upper part of the housing (1.1); The housing (1.1) also has an oil inlet (A) and an oil outlet (E); The oil inlet (A) is located at the top of the housing (1.1) and connects to the oil storage tank (1.8), where an oil filling plug (1.9) is installed; The oil drain port (E) is connected to the oil outlet channel (B) and is located at the bottom of the housing (1.1), where a sealing plug (1.10) is installed; The connection between the oil outlet channel (B) and the booster chamber (C) is located between the bottom wall of the booster chamber (C) and the manual booster piston (1.7); The connection between the oil outlet and the booster chamber (C) is located between the bottom wall of the booster chamber (C) and the manual booster piston (1.7).

9. The plug-in portable transport trolley according to claim 1, characterized in that, Also includes: The hoisting system (3) is connected to the top of the two side walls of the frame (4.6) of the transport vehicle body (4) and is used to hoist and adjust heavy objects.

10. The plug-in portable transport trolley according to claim 9, characterized in that, The hoisting system (3) includes a hoisting frame (3.1), a crank handle (3.2), a reel (3.3), hoisting ropes (3.4), and a hook (3.5); The crank handle (3.2) is mounted on the lifting frame (3.1) via a bearing; The roller (3.3) is connected to the crank handle (3.2); One end of the hoisting rope (3.4) is connected to the reel (3.3), and the other end is connected to the hook (3.5). By turning the handle (3.2), the reel (3.3) can be driven to rotate, and the hoisting rope (3.4) and its hook (3.5) can be wound up and down. The hook (3.5) can be used to hang and adjust heavy objects.

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