Forward moving type cross-country accompanying forklift

Abstract

The utility model discloses a forward moving type cross-country accompanying forklift which comprises a forklift body, the forklift adopts a static pressure transmission three-fulcrum straddle type, the straddle of the forklift body is respectively welded with a get-on hook, the straddle of the forklift body is provided with a hydraulic motor, and the hydraulic motor is provided with a cross-country tire. The forklift body is provided with a double-acting vehicle-mounted moving device. And a driving steering device for the static pressure forklift is arranged at the rear part of the forklift body. The hydraulic motor, the double-acting vehicle-mounted moving device and the driving steering device for the static pressure forklift are connected with a hydraulic pipeline control system and an electrical system, the variable pump is driven by the engine, and the hydraulic motor is driven by the variable pump to complete walking. A steering oil cylinder of the rear wheel driving steering device drives a steering connecting rod and a steering support to achieve rear wheel steering. The gear pump drives the multi-way valve to complete work and get-on actions, and truck carrying is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of forklift devices, in particular to a forward-moving off-road accompanying forklift. Background Art

[0002] At present, among mechanical engineering vehicles, forklifts cannot completely follow the speed of trucks to work in the field, and must be loaded and transported to the field by other special vehicles. During the transfer process, the forklift loading process is very inconvenient, requiring the use of ramps and other devices, and requires professional operators to operate, which is very inconvenient and brings inconvenience to the transportation of forklifts. Utility Model Content

[0003] In view of the above defects or shortcomings, the purpose of the utility model is to provide a forward-moving off-road traveling forklift.

[0004] In order to achieve the above purpose, the technical solution of the utility model is:

[0005] A forward-moving off-road traveling forklift comprises: a forklift body, a hydrostatic drive mechanism installed on the front wheels of the forklift body, a driving steering device installed on the rear wheels of the forklift body, a double-acting moving device for getting on the vehicle and working slidably installed on the legs of the forklift body, and a hydraulic pipeline control system and an electrical system are connected to the hydrostatic drive mechanism, the driving steering device and the double-acting moving device.

[0006] The static pressure driving mechanism comprises: an engine, a variable displacement pump and a hydraulic motor installed on the front wheel, the output end of the engine is connected to the variable displacement pump, and the output end of the variable displacement pump is connected to the hydraulic motor.

[0007] A slide is installed on the plug leg of the forklift body, a moving frame is installed on the double-acting moving device, the moving frame is installed in the slide through rollers, a push-out cylinder is connected to the moving frame, and the fixed end of the push-out cylinder is fixedly installed on the forklift body.

[0008] The double-acting moving device comprises: an outer mast installed on the forklift body, a liftable inner mast installed on the outer mast, a lifting device installed at the bottom of the outer mast, the top of the lifting device connected to the inner mast, a fork frame and a fork installed at the bottom of the inner mast,

[0009] The outer door frame is connected with the inner door frame through a double-acting cylinder.

[0010] A vehicle hook and a chain shaft are welded on the plug leg of the forklift body, the vehicle hook is connected to the upper shaft of the truck chassis, and the vehicle accessory chain is connected to the upper shaft of the truck chassis and the chain shaft for safety protection.

[0011] The driving steering device comprises: a steering bracket assembly installed on the rear wheel assembly, the steering bracket assembly is connected to a steering cylinder, a steering linkage mechanism, and a driving motor, and the steering cylinder drives the steering linkage mechanism and the steering bracket assembly to drive the rear wheel to steer.

[0012] The hydraulic pipeline control system is divided into a forklift traveling part and a working part; the traveling part includes a variable pump, a hydraulic motor and a pipeline; the working part includes an electro-hydraulic proportional valve and a gear pump; the traveling part is provided with oil circuit power by a variable pump, which is branched through pipelines to the hydraulic motor of the front wheel and the rear wheel motor to drive the entire vehicle.

[0013] The working part is provided with oil circuit power by a gear pump, the electro-hydraulic proportional valve distributes the flow and converts the oil circuit, and the oil cylinders of each circuit complete the lateral shifting and lifting of the goods.

[0014] The forklift body is a three-wheel drive structure, including two front wheels and one rear wheel.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model provides a forward-moving off-road traveling forklift, which is suitable for truck-carrying forklifts. Since the utility model adopts a hydrostatic transmission method and drives the front and rear hydraulic motors through a variable pump to achieve walking, the whole vehicle has high transmission efficiency and strong off-road capability, and is suitable for field work. In addition, the utility model is provided with a sliding dual-acting moving device for getting on the vehicle and working, which can achieve the dual effects of getting on the vehicle and working at the same time, and the slidable getting on the vehicle device makes the overall vehicle body design more compact, has a wide range of applications, and is easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model forward-moving off-road accompanying forklift Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model forward-moving off-road accompanying forklift Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the forward-moving structure of the forward-moving off-road accompanying forklift of the utility model;

[0020] Figure 4 This is a schematic diagram of the utility model of a forward-moving off-road accompanying forklift being carried by a truck;

[0021] Figure 5 This is the principle diagram of the hydraulic pipeline control system of the utility model forward-moving off-road accompanying forklift;

[0022] Figure 6This is a working diagram of the hydraulic pipeline control system of the utility model forward-moving off-road accompanying forklift;

[0023] Figure 7 This is a schematic diagram of the structure of the double-acting vehicle-mounted mobile device of the utility model;

[0024] Figure 8 The utility model is a schematic diagram of the structure of a driving steering device for a hydrostatic forklift.

[0025] In the figure, 1 is the forklift body; 2 is the upper hook, 3 is the hanging chain shaft, 4 is the hydraulic motor, 5 is the off-road tire, 6 is the mobile frame, 7 is the double-acting vehicle mobile device, 8 is the driving steering device for the hydrostatic forklift, 9 is the hydraulic pipeline control system, 10 is the electrical system, 7-1 is the outer door frame, 7-2 is the inner door frame, 7-3 is the fork frame, 7-4 is the fork, 7-5 is the double-acting cylinder, 8-1 is the rear wheel assembly, 8-2 is the steering bracket assembly, 8-4 is the steering cylinder, 8-5 is the steering linkage mechanism, 8-6 is the driving motor, 9-1 is the variable pump, 9-3 is the electro-hydraulic proportional valve, 9-4 is the gear pump. DETAILED DESCRIPTION

[0026] The utility model will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0027] like Figure 1-4 As shown, the utility model provides a forward-moving off-road accompanying forklift, comprising: a forklift body 1, a hydrostatic drive mechanism is installed on the front wheel of the forklift body 1, a driving steering device 8 is installed on the rear wheel of the forklift body 1, a double-acting moving device 7 for getting on the vehicle and working is slidably installed on the plug leg of the forklift body 1, and the hydrostatic drive mechanism, the driving steering device 8, and the double-acting moving device 7 are connected to a hydraulic pipeline control system 9 and an electrical system 10.

[0028] In the present invention, in order to make the vehicle body suitable for outdoor environments, convenient for transportation and operation in outdoor environments, the forklift body 1 is a three-wheel drive structure, wherein the forklift body 1 is a three-wheel drive structure, including two front wheels and one rear wheel. A plug leg is provided between the vehicle body and the wheels for connection.

[0029] Specifically, the hydrostatic drive mechanism includes: an engine, a variable pump 9-1 and a hydraulic motor 4 installed on the front wheel 5, the output end of the engine is connected to the variable pump 9-1, and the output end of the variable pump 9-1 is connected to the hydraulic motor 4. The power source of the forklift body is the engine, the engine drives the variable pump 9-1, and the variable pump 9-1 drives the hydraulic motor through the pipeline to complete the travel; and the hydrostatic forklift uses the steering cylinder of the driving steering device 8 to drive the steering connecting rod and the steering bracket to realize the rear wheel steering. The gear pump drives the multi-way valve through the hydraulic pipeline control system 9 to complete the work and the vehicle-mounting and following action. The vehicle-mounting hook 2 is connected to the upper shaft of the truck chassis, and the vehicle-mounted accessory chain is connected to the upper shaft of the truck chassis and the chain shaft 3 to play a safety protection role. The forward-moving off-road accompanying forklift is fixed on the card and runs with the truck.

[0030] Preferably, a slide is installed on the plug leg of the forklift body 1, a moving frame 6 is installed on the double-acting moving device 7, the moving frame 6 is installed in the slide through rollers, and a push-out cylinder 6-1 is connected to the moving frame 6, and the fixed end of the push-out cylinder 6-1 is fixedly installed on the forklift body 1. Specifically, Figure 7 As shown, the double-acting moving device 7 comprises: an outer mast 7-1 installed on the forklift body 1, a liftable inner mast 7-2 installed on the outer mast 7-1, a lifting device installed at the bottom of the outer mast 7-1, the top of the lifting device is connected to the inner mast 7-2, a fork frame 7-3 and a fork 7-4 are installed at the bottom of the inner mast 7-2, and the outer mast 7-1 is connected to the inner mast 7-2 through a double-acting cylinder 7-5. The moving frame 7-5 is connected to the slideway on the body through rollers, and the other end of the moving frame is connected to the body through a push-out cylinder. The moving frame and the double-acting vehicle-mounted moving device 7 are driven by the stroke of the push-out cylinder to realize the forward movement of the mast in the slideway on the body.

[0031] Furthermore, a vehicle hook 2 and a chain shaft 3 are welded on the plug leg of the forklift body 1, the vehicle hook 2 is connected to the upper shaft of the truck chassis, and the vehicle accessory chain is connected to the upper shaft of the truck chassis and the chain shaft 3 for safety protection. The vehicle hook 2 on the plug leg of the forklift body 1 is connected to the truck shaft, and the chain shaft 3 is connected to the truck through a safety chain to prevent the truck from falling off during operation.

[0032] Preferably, if Figure 8 As shown, the driving steering device 8 includes: a steering bracket assembly 8-2 installed on the rear wheel assembly 8-1, the steering bracket assembly 8-3 is connected with a steering cylinder 8-4, a steering link mechanism 8-5, and a driving motor 8-6, and the steering cylinder 8-4 drives the steering link mechanism 8-5 and the steering bracket assembly 8-2 to drive the rear wheel to steer. The hydraulic pipeline control system 9 is divided into a forklift walking part and a working part; as shown Figure 5 ,6 As shown, the walking part includes a variable pump 9-1, a hydraulic motor 4 and pipelines; the working part includes an electro-hydraulic proportional valve 9-3 and a gear pump 9-4; the walking part is provided with oil circuit power by the variable pump 9-1, which is divided into 3 routes and respectively supplied to the hydraulic motor 4 of the front wheel and the rear wheel motor through pipelines to drive the whole vehicle. The working part is provided with oil circuit power by the gear pump, the electro-hydraulic proportional valve 9-3 distributes the flow and converts the oil circuit, and each oil cylinder completes the side shifting and lifting of the goods, including the boarding action of the double-acting cylinder.

[0033] The specific working process of the utility model is as follows: the gear pump provides an oil circuit to the electro-hydraulic proportional valve, the electro-hydraulic proportional valve pushes the valve stem, the corresponding oil circuit of the electro-hydraulic proportional valve opens, and the moving frame and the double-acting vehicle-mounted moving device 7 are driven by the pushing cylinder stroke to realize the forward movement of the door frame in the slideway on the vehicle body; the lifting valve stem is pushed, the lifting oil circuit corresponding to the electro-hydraulic proportional valve opens, and the loading and unloading of goods is realized through the lifting stroke of the double-acting cylinder.

[0034] The operation process is: the vehicle key switch is turned on, the engine starts, the engine drives the variable pump, the variable pump divides the oil circuit into two paths, one to the front wheel hydraulic motor and the other to the rear wheel hydraulic motor, the motor drives the drive wheels to realize the operation of the forklift; if it is running at high speed in the field, press the switch button, the oil circuit of the front hydraulic motor is cut off, it becomes a free wheel, and the rear wheel becomes the drive wheel, and full speed operation can be achieved.

[0035] The gear pump drives the multi-way valve through the hydraulic pipeline control system 9 to complete the work and the vehicle-mounted action. The vehicle-mounted hook 2 is connected to the upper shaft of the truck chassis, and the vehicle accessory chain is connected to the upper shaft of the truck chassis and the hanging chain shaft 3 to play a safety protection role. The forward-moving off-road accompanying forklift is fixed on the card and runs with the truck.

[0036] The specific loading process is as follows: the forklift runs to the rear of the truck, the mast moves to the front of the forklift, the fork is raised to the height of the fork slot of the truck, the fork is inserted into the truck slot, the valve stem is pushed down, and the double-acting cylinder force of the mast is used to lift the forklift body off the ground. The mast moves the valve stem backward, and the forklift runs forward to the tail of the truck body, completing the forklift loading function. The forklift loading hook 2 is connected to the upper shaft of the truck chassis, and the accessory chain of the vehicle is connected to the upper shaft of the truck chassis and the chain shaft 3 for safety protection. Prevent the danger of the truck falling off during operation.

[0037] It is obvious to those skilled in the art that the above-mentioned specific examples are only preferred schemes of the present invention. Therefore, the improvements and changes that may be made by those skilled in the art to certain parts of the present invention still reflect the principles of the present invention and achieve the purpose of the present invention, and all belong to the scope of protection of the present invention.

Claims

1. A forward-moving off-road forklift, characterized in that: include: A forklift body (1), wherein a hydrostatic drive mechanism is mounted on the front wheels of the forklift body (1), a driving steering device (8) is mounted on the rear wheels of the forklift body (1), a double-acting moving device (7) for boarding and working is slidably mounted on the legs of the forklift body (1), and a hydraulic pipeline control system (9) and an electrical system (10) are connected to the hydrostatic drive mechanism, the driving steering device (8), and the double-acting moving device (7).

2. The reach-type off-road forklift according to claim 1, characterized in that: The static pressure drive mechanism comprises: an engine, a variable displacement pump (9-1) and a hydraulic motor (4) mounted on a front wheel (5); the output end of the engine is connected to the variable displacement pump (9-1), and the output end of the variable displacement pump (9-1) is connected to the hydraulic motor (4).

3. The reach-type off-road forklift according to claim 1, characterized in that: A slide is installed on the plug leg of the forklift body (1), a moving frame (6) is installed on the double-acting moving device (7), the moving frame (6) is installed in the slide via rollers, a push-out cylinder (6-1) is connected to the moving frame (6), and a fixed end of the push-out cylinder (6-1) is fixedly installed on the forklift body (1).

4. The reach-type off-road forklift according to claim 3, characterized in that: The double-acting moving device (7) comprises: an outer mast (7-1) mounted on a forklift body (1), a liftable inner mast (7-2) mounted on the outer mast (7-1), a lifting device mounted at the bottom of the outer mast (7-1), the top of the lifting device connected to the inner mast (7-2), and a fork frame (7-3) and a fork (7-4) mounted at the bottom of the inner mast (7-2).

5. The reach-type off-road forklift according to claim 4, characterized in that: The outer door frame (7-1) and the inner door frame (7-2) are connected via a double-acting cylinder (7-5).

6. The reach-type off-road forklift according to claim 1, characterized in that: A vehicle hook (2) and a chain shaft (3) are welded on the plug leg of the forklift body (1); the vehicle hook (2) is connected to the upper shaft of the truck chassis; and the vehicle accessory chain is connected to the upper shaft of the truck chassis and the chain shaft (3) for safety protection.

7. The reach-type off-road forklift according to claim 1, characterized in that: The driving steering device (8) comprises: a steering bracket assembly (8-2) mounted on a rear wheel assembly (8-1); the steering bracket assembly (8-3) is connected to a steering cylinder (8-4), a steering link mechanism (8-5), and a driving motor (8-6); the steering cylinder (8-4) drives the steering link mechanism (8-5) and the steering bracket assembly (8-2) to drive the rear wheel to steer.

8. The reach-type off-road forklift according to claim 7, characterized in that: The hydraulic pipeline control system (9) is divided into a forklift walking part and a working part; the walking part comprises a variable pump (9-1), a hydraulic motor (4) and pipelines; the working part comprises: an electro-hydraulic proportional valve (9-3) and a gear pump (9-4); the walking part is provided with oil circuit power by the variable pump (9-1), which is divided into three routes and respectively supplied to the hydraulic motor (4) of the front wheel and the rear wheel motor through pipelines to drive the entire vehicle; the working part is provided with oil circuit power by the gear pump (9-4), the electro-hydraulic proportional valve (9-3) distributes flow and converts oil circuits, and each oil cylinder completes the lateral shifting and lifting of goods.

9. The reach-type off-road forklift according to claim 1, characterized in that: The forklift body (1) is a three-wheel drive structure, including two front wheels and one rear wheel.

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