CN220766414U

CN220766414U - Multisection climbing forklift

Info

Publication number: CN220766414U
Application number: CN202322234384.0U
Authority: CN
Inventors: 黎敬远
Original assignee: Zhejiang Mike Intelligent Manufacturing Equipment Co ltd
Current assignee: Zhejiang Mike Intelligent Manufacturing Equipment Co ltd
Priority date: 2023-08-20
Filing date: 2023-08-20
Publication date: 2024-04-12
Anticipated expiration: 2033-08-20

Abstract

The utility model discloses a multi-section climbing forklift, which can ascend to a relatively higher position by empty vehicles or with cargoes and can descend to a relatively lower position by empty vehicles or with cargoes on the premise that a temporary ramp plate is not required to be arranged, so that the requirement on a transferring space is not high, the cargoes cannot incline greatly in the transferring process, and the stability of the transferring process and the quality of the cargoes can be ensured. The main structure of the brake system comprises a fork frame, a power system and a brake system; the vehicle further comprises a first vehicle section, a second vehicle section, a third vehicle section, a cockpit and a cargo fork; the first vehicle section is provided with a pair of first wheels, the second vehicle section is provided with a pair of second wheels, and the third vehicle section is provided with a pair of third wheels; the third vehicle section is provided with a fork frame lifter, the second vehicle section is provided with a second lifter and a third lifter, and the first vehicle section is provided with a second lifter and a second lifter.

Description

Multisection climbing forklift

Technical Field

The utility model belongs to the technical field of forklifts, and particularly relates to a multi-section climbing forklift.

Background

A forklift is an industrial transport vehicle, and is a wheeled transport vehicle for handling, stacking and short-distance transporting goods in a pallet, and is commonly used for transporting large objects in storage, and ISO/TC110 is called an industrial vehicle and is usually driven by a fuel engine or a battery (motor). The forklift is widely used in ports, stations, airports, cargo yards, factory workshops, warehouses, distribution centers and the like, and is an indispensable device for pallet transportation and container transportation in loading and unloading and carrying operations of pallet cargos in cabins, carriages and containers.

When a forklift is used for loading, unloading and transporting pallet cargos in a cabin, a carriage or a container, a situation that the forklift needs to "lift up" or "fall back" is often encountered, for example, a situation that a forklift empty car or a truck with a load directly reaches a relatively higher carriage from the ground (hereinafter, this example is also used for explanation, and the principle is consistent with that the forklift enters the cabin with a relatively higher position, the forklift enters a container with a relatively higher position, etc.), which is one of the situations that the forklift "lifts up", and then the situation that the forklift empty car or the truck with a load reaches the ground from the relatively higher carriage is one of the situations that the forklift "fall back".

In such cases as described above, the following schemes are currently adopted: when a forklift is lifted, the forklift is directly driven to lift the carriage through the temporary ramp plate, and when the forklift is lifted down, the forklift is directly returned to the ground through the temporary ramp plate.

Disclosure of Invention

The utility model provides a multi-section climbing forklift, which can ascend to a relatively higher position by empty vehicles or with cargoes and can descend to a relatively lower position by empty vehicles or with cargoes on the premise that a temporary ramp plate is not required to be arranged, so that the requirement on a transferring space is not high, the cargoes cannot incline greatly in the transferring process, and the stability of the transferring process and the quality of the cargoes can be ensured.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a multi-section climbing forklift comprises a power system and a brake system; the vehicle further comprises a first vehicle section, a second vehicle section, a third vehicle section, a cockpit arranged on the first vehicle section and a cargo fork frame arranged on the third vehicle section;

the first vehicle section is provided with a pair of first wheels, the second vehicle section is provided with a pair of second wheels, and the third vehicle section is provided with a pair of third wheels;

the advancing directions of the first vehicle section, the second vehicle section and the third vehicle section are consistent, and the first vehicle section, the second vehicle section, the third vehicle section and the cargo fork frame are sequentially arranged along the advancing direction of the first vehicle section;

the third car section is provided with a fork frame lifter for driving the cargo fork frame to lift relative to the third car section, the second car section is provided with a second and third lifter for driving the third car section to lift relative to the second car section, and the first car section is provided with a second and third lifter for driving the second car section to lift relative to the first car section.

Preferably, the power system comprises a pair of first driving machines which are arranged on the first vehicle section and are in one-to-one correspondence with the first wheels, the first wheels are driven by the corresponding first driving machines, and the power system further comprises a pair of third driving machines which are arranged on the third vehicle section and are in one-to-one correspondence with the third wheels, and the third wheels are driven by the corresponding third driving machines.

Preferably, the power system further comprises a forward pedal arranged in the cockpit and a reverse pedal arranged in the cockpit;

when the forward pedal is depressed: the first driving machine drives the corresponding first wheel to rotate and advance, and the third driving machine drives the corresponding third wheel to rotate and advance;

when the reversing pedal is depressed: the first driver drives the corresponding first wheel to rotate backwards, and the third driver drives the corresponding third wheel to rotate backwards.

Preferably, a wheel brake disc is arranged on the first wheel, a wheel brake disc is arranged on the third wheel, and the brake system comprises a plurality of dynamic brake structures which are in one-to-one correspondence with the wheel brake discs;

in the corresponding wheel brake disc and dynamic brake structure: the dynamic braking structure comprises a dynamic braking disc for contacting the wheel braking disc, a braking oil cylinder for driving the dynamic braking disc and an oil station for driving the braking oil cylinder, wherein the oil station comprises an oil tank, a braking oil pump for supplying hydraulic oil in the oil tank into the braking oil cylinder to realize braking and an oil return pipeline for allowing the hydraulic oil in the braking oil cylinder to flow back to the oil tank, a return spring for allowing the hydraulic oil in the braking oil cylinder to flow back to the oil tank through the oil return pipeline is arranged in the braking oil cylinder, the braking oil pump is communicated to the braking oil cylinder through an oil supply one-way valve, and the oil return pipeline is provided with an oil return one-way valve.

Preferably, the first vehicle section is provided with an upper frame and a vertical sliding rod which is in sliding connection with the upper frame, the lower end of the vertical sliding rod is provided with a lower wheel frame, an auxiliary wheel is arranged on the lower wheel frame, a vertical top spring is sleeved on the vertical sliding rod, the upper end of the vertical top spring is connected with the upper frame, the lower end of the vertical top spring is connected with the lower wheel frame, all brake oil pumps are connected in series in an oil pump circuit, the oil pump circuit also comprises a first contact arranged at the top of the upper frame, a second contact arranged at the top of the upper frame and a conducting strip arranged on the vertical sliding rod, the horizontal plane where the lowest point of the auxiliary wheel is positioned is an auxiliary surface, the horizontal plane where the lowest point of the first wheel is positioned is a first surface, and the auxiliary wheel is positioned between any first wheel and any second vehicle section;

when the difference in height between the auxiliary surface and the first surface is less than 3 cm: the vertical top spring is in a compressed state, the conducting strip is separated from the first contact, and the conducting strip is separated from the second contact;

when the auxiliary surface is lower than the first surface and the height difference between the auxiliary surface and the first surface is greater than or equal to 3 cm: the conducting strip is contacted with the first contact, the conducting strip is contacted with the second contact, and the oil pump circuit is conducted.

Preferably, the brake cylinder comprises an oil cylinder body, an inner piston and a piston rod, wherein the oil cylinder body is internally divided into an oil cavity and an air cavity communicated with the outside by the inner piston, the brake oil pump, the oil return pipeline and the oil cavity are sequentially communicated, the oil cavity, the oil return pipeline and the oil tank are sequentially communicated, the return spring is arranged in the air cavity, one end of the return spring is connected with the inner piston, and the other end of the return spring is connected with the oil cylinder body.

The beneficial effects of the utility model are as follows: on the premise that a temporary ramp plate is not required to be arranged, the empty car or the carried goods can ascend to a relatively higher position, and the empty car or the carried goods can also descend to a relatively lower position, so that the requirement on the transferring space is not high, the goods cannot incline greatly in the goods transferring process, the stability of the transferring process can be ensured, and the quality of the goods can be ensured; the utility model has the structure of preventing the vehicle from turning over, and can continuously back only after the first vehicle section descends and the first vehicle wheel contacts the ground, so as to continuously complete the process of 'low back'.

Drawings

FIG. 1 is a front view of the present utility model;

FIG. 2 is a schematic illustration of the structure of the present utility model at a first vehicle section;

FIG. 3 is a schematic view of the structure of the present utility model at a second section;

FIG. 4 is a schematic view of the structure of the third section of the present utility model;

FIG. 5 is a top view of the present utility model;

FIG. 6 is a schematic view showing a partial structure of embodiment 2 of the present utility model;

FIG. 7 is a schematic view showing the structure of an auxiliary wheel in embodiment 2 of the present utility model;

fig. 8 is a schematic view of the structure of a brake cylinder in embodiment 2 of the present utility model.

Reference numerals: 1. a first vehicle section; 101. a first wheel; 102. a first and second lifters; 103. an upper frame; 2. a second vehicle section; 201. a second wheel; 202. a second lifter and a third lifter; 3. a third vehicle section; 301. a third wheel; 4. a cargo fork; 5. fork lifter; 601. a wheel brake disc; 602. a dynamic brake disc; 603. a brake cylinder; 603.1, oil cylinder; 603.2, inner piston; 603.3, a piston rod; 603a, oil chamber; 603b, air cavities; 604. an oil tank; 605. a brake oil pump; 606. an oil return pipeline; 607. a return spring; 701. a vertical sliding rod; 702. a lower wheel frame; 703. an auxiliary wheel; 704. a vertical top spring; 705. a first contact; 706. a second contact; 707. conductive strips.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

Example 1

As shown in fig. 1, 2, 3, 4 and 5, the multi-section climbing forklift comprises a power system and a brake system; the vehicle further comprises a first vehicle section 1, a second vehicle section 2, a third vehicle section 3, a cockpit arranged on the first vehicle section 1 and a cargo fork 4 arranged on the third vehicle section 3;

the first vehicle section 1 is provided with a pair of first wheels 101, the second vehicle section 2 is provided with a pair of second wheels 201, and the third vehicle section 3 is provided with a pair of third wheels 301;

the advancing directions of the first vehicle section 1, the second vehicle section 2 and the third vehicle section 3 are consistent, and the first vehicle section 1, the second vehicle section 2, the third vehicle section 3 and the goods fork 4 are sequentially arranged along the advancing direction of the first vehicle section 1;

the third section 3 is provided with a fork lifter 5 for driving the cargo fork 4 to lift relative to the third section 3, the second section 2 is provided with a second and third lifter 202 for driving the third section 3 to lift relative to the second section 2, and the first section 1 is provided with a second and third lifter 102 for driving the second section 2 to lift relative to the first section 1.

The pallet fork 4 can load and unload and transport pallet goods. When the utility model is to be "lifted" (empty or loaded), taking the example of lifting the carriage from the ground, the utility model starts before the carriage, the two three lifters 202 drive the third section 3 together with the cargo fork 4 to rise above the carriage floor (the third wheel 301 rises above the carriage floor), the utility model advances a small distance to allow the third section 3 together with the cargo fork 4 to reach above the carriage floor, then the two three lifters 202 operate, the third section 3 together with the cargo fork 4 to descend, the third wheel 301 contacts the carriage floor, then the two three lifters 102 operate together with the two three lifters 202, the first section 1, the third section 3 together with the cargo fork 4 to remain stationary, the second section 2 to rise above the carriage floor (the second wheel 201 rises above the carriage floor), the utility model advances a short distance to bring the second vehicle section 2 above the cabin floor range, then the two-elevator 102 works with the two-three-elevator 202, the first vehicle section 1, the third vehicle section 3 and the cargo fork 4 remain stationary, the second vehicle section 2 descends to bring the second wheel 201 into contact with the cabin floor, then the two-elevator 102 works to raise the first vehicle section 1 above the cabin floor level (the first wheel 101 rises above the cabin floor level), the utility model advances a short distance to bring the first vehicle section 1 above the cabin floor range, then the two-elevator 102 works to lower the first vehicle section 1 to bring the first wheel 101 into contact with the cabin floor, thus completing the "climbing" process. When the present utility model is about to "go low" (empty or loaded), taking the example of going back to the ground from the car, the sequence of actions of the structures of the present utility model is the reverse of the above: first the first section 1 leaves the cabin floor area, then the first wheel 101 lands, then the second section 2 leaves the cabin floor area, then the second wheel 201 lands, finally the third section 3 leaves the cabin floor area together with the cargo fork 4, then the third wheel 301 lands.

In the process of ascending or descending, a temporary ramp plate is not required to be arranged, only a loading and unloading area which is larger than the occupied area of the utility model is required to work in front of a carriage, and in the process of transporting goods, the goods fork frame 4 is not inclined, so that the goods can not be inclined basically, the stability of the transporting process and the quality of the goods can be ensured, and the goods transporting device is particularly suitable for the goods which cannot be inclined at a large angle.

The power system comprises a pair of first driving machines which are arranged on the first vehicle section 1 and are in one-to-one correspondence with the first wheels 101, the first wheels 101 are driven by the corresponding first driving machines, the power system also comprises a pair of third driving machines which are arranged on the third vehicle section 3 and are in one-to-one correspondence with the third wheels 301, and the third wheels 301 are driven by the corresponding third driving machines.

The first driving machine and the third driving machine can be common power output machines such as motors and the like. When the utility model is to be turned, the speed difference between the wheels can be utilized.

The power system also comprises a forward pedal arranged in the cockpit and a reverse pedal arranged in the cockpit;

when the forward pedal is depressed: the first driving machine drives the corresponding first wheel 101 to rotate and advance, and the third driving machine drives the corresponding third wheel 301 to rotate and advance;

when the reversing pedal is depressed: the first drive machine drives the corresponding first wheel 101 in reverse rotation and the third drive machine drives the corresponding third wheel 301 in reverse rotation.

Example 2

Based on embodiment 1, as shown in fig. 6, a wheel brake disc 601 is provided on the first wheel 101, a wheel brake disc 601 is provided on the third wheel 301, and the brake system includes a plurality of dynamic brake structures corresponding to the wheel brake discs 601 one by one;

in the corresponding wheel brake disc 601 and dynamic brake configuration: the dynamic brake structure comprises a dynamic brake disc 602 for contacting a wheel brake disc 601, a brake oil cylinder 603 for driving the dynamic brake disc 602 and an oil station for driving the brake oil cylinder 603, wherein the oil station comprises an oil tank 604, a brake oil pump 605 for supplying hydraulic oil in the oil tank 604 into the brake oil cylinder 603 to realize braking and an oil return pipeline 606 for allowing the hydraulic oil in the brake oil cylinder 603 to flow back to the oil tank 604, a return spring 607 for allowing the hydraulic oil in the brake oil cylinder 603 to flow back to the oil tank 604 through the oil return pipeline 606 is arranged in the brake oil cylinder 603, the brake oil pump 605 is communicated to the brake oil cylinder 603 through an oil supply one-way valve, and the oil return pipeline 606 is provided with an oil return one-way valve.

The oil supply check valve may pass from the brake oil pump 605 to the brake oil cylinder 603 through the oil supply check valve, and the oil return check valve may pass from the brake oil cylinder 603 to the oil tank 604 through the oil return check valve.

The brake system further comprises a brake pedal arranged in the cockpit, and when the brake pedal is pressed down: all brake oil pumps 605 are started.

When braking is needed, the brake oil pump 605 works, part of hydraulic oil in the oil tank 604 is supplied to the brake oil cylinder 603, and the brake oil cylinder 603 drives the movable brake disc 602 to contact and press the wheel brake disc 601 arranged on the wheels, so that friction is reduced, and friction braking is performed. When braking is no longer needed, the brake oil pump 605 stops working, and then a part of hydraulic oil in the brake oil cylinder 603 flows back to the oil tank 604 through the oil return pipeline 606, and the brake oil cylinder 603 drives the brake disc 602 to leave the wheel brake disc 601 arranged on the wheels.

As shown in fig. 7, the first vehicle section 1 is provided with an upper frame 103 and a vertical sliding rod 701 slidingly connected with the upper frame 103, the lower end of the vertical sliding rod 701 is provided with a lower wheel frame 702, the lower wheel frame 702 is provided with an auxiliary wheel 703, the vertical sliding rod 701 is sleeved with a vertical top spring 704, the upper end of the vertical top spring 704 is connected with the upper frame 103, the lower end of the vertical top spring 704 is connected with the lower wheel frame 702, all brake oil pumps 605 are connected in series in an oil pump circuit, the oil pump circuit also comprises a first contact 705 arranged at the top of the upper frame 103, a second contact 706 arranged at the top of the upper frame 103 and a conductive strip 707 arranged on the vertical sliding rod 701, the horizontal plane where the lowest point of the auxiliary wheel 703 is located is an auxiliary surface, the horizontal plane where the lowest point of the first wheel 101 is located is a first surface, and the auxiliary wheel 703 is located between any first wheel 101 and the second vehicle section 2;

when the difference in height between the auxiliary surface and the first surface is less than 3 cm: the vertical top spring 704 is in a compressed state, the conductive strip 707 is separated from the first contact 705, and the conductive strip 707 is separated from the second contact 706;

when the auxiliary surface is lower than the first surface and the height difference between the auxiliary surface and the first surface is greater than or equal to 3 cm: the conductive strip 707 is in contact with the first contact 705, the conductive strip 707 is in contact with the second contact 706, and the oil pump circuit is conducted.

In the process of 'low back' of the utility model, the first vehicle section 1 falls to the ground firstly, then the second vehicle section 2 falls to the ground, and finally the third vehicle section 3 and the goods fork 4 fall to the ground together. During the "low-back" process, after the first vehicle section 1 leaves the area above the floor of the vehicle, both the second wheel 201 and the third wheel 301 should continue to contact the floor of the vehicle, at which time the first vehicle section 1 is lowered until the first wheel 101 contacts the ground, and then the present utility model can continue to back. In practice, the operator is likely to have "over-backing" due to inconvenience in observation, mishandling, etc., which is dangerous, for example, when the first wheel 101 is not in contact with the ground, but the second wheel 201 is already out of the range above the floor of the cabin, at which time the utility model will tip over all the way back. In view of this, in this solution, during the "low back" process, the first vehicle section 1 leaves above the cabin floor range first, at a certain moment, the auxiliary wheel 703 leaves above the cabin floor range, at this moment, the first wheel 101 leaves above the cabin floor range, while the second wheel 201 and the third wheel 301 still continue to contact the cabin floor (the auxiliary wheel 703 is located between any one of the first wheels 101 and the second vehicle section 2), under the action of the vertical top spring 704, the lower wheel frame 702, the vertical sliding bar 701 and the conductive bar 707 move down together until the conductive bar 707 contacts the first contact 705 and the conductive bar 707 contacts the second contact 706, at which time the oil pump circuit is turned on, and the brake oil pump 605 is operated to achieve wheel braking, so that the present utility model cannot continue to back at this moment, and can ensure that the second wheel 201 and the third wheel 301 continue to contact the cabin floor, and therefore the present utility model will not tip over all backwards. At this time, only when the first vehicle section 1 is lowered and the first wheel 101 contacts the ground, the auxiliary wheel 703 is also touched and reset, so that the conductive strip 707 is separated from the first contact 705, the conductive strip 707 is separated from the second contact 706, the brake oil pump 605 stops working, and then the brake fails, and then the utility model can continue to retract to continue to complete the 'low-back' process. In this embodiment, the above-mentioned "anti-rollover structure" is only provided at the first vehicle section 1, if there is a need, the same or similar "anti-rollover structure" may be provided at the second vehicle section 2 (of course, the second vehicle section 2 does not necessarily need to be provided with the "anti-rollover structure", because if the second vehicle wheel 201 does not contact the ground, the third vehicle wheel 301 leaves the area above the cabin floor on the premise that the first vehicle wheel 101 contacts the ground, the cargo fork 4 will drop slightly, the bottom of the cargo fork 4 will directly contact the cabin floor, and the operator will feel that the operator will also go to perform the operation of letting the second vehicle wheel 201 contact the ground, so there is no rollover risk here).

It should be noted that, in this scheme, a 3 cm allowance is set: "when the auxiliary surface and the first surface have a height difference of less than 3 cm: the vertical top spring 704 is in a compressed state, the conductive strip 707 is separated from the first contact 705, and the conductive strip 707 is separated from the second contact 706; when the auxiliary surface is lower than the first surface and the height difference between the auxiliary surface and the first surface is greater than or equal to 3 cm: the conductive strip 707 is in contact with the first contact 705, the conductive strip 707 is in contact with the second contact 706, and the oil pump circuit is on. This is because the ground is not necessarily completely level, and if the auxiliary wheel 703 moves up and down slightly, it will cause the oil pump circuit to be turned on or short-circuited, which is not beneficial to practical application, so that a certain margin is set to ensure stable and smooth working process.

As shown in fig. 8, the brake cylinder 603 includes a cylinder body 603.1, an inner piston 603.2 and a piston rod 603.3, the cylinder body 603.1 is divided into an oil cavity 603a and an air cavity 603b communicating with the outside by the inner piston 603.2, the brake oil pump 605, the oil return pipeline 606 and the oil cavity 603a are sequentially communicated, the oil cavity 603a, the oil return pipeline 606 and the oil tank 604 are sequentially communicated, the return spring 607 is disposed in the air cavity 603b, one end of the return spring 607 is connected with the inner piston 603.2, and the other end of the return spring 607 is connected with the cylinder body 603.1.

After the brake oil pump 605 has stopped, the return spring 607 can push the inner piston 603.2 to move, so that part of the hydraulic oil in the oil chamber 603a is pumped back to the oil tank 604 via the return line 606.

The foregoing has outlined rather broadly the more detailed description of embodiments of the utility model, wherein the principles and embodiments of the utility model are explained in detail using specific examples, the above examples being provided solely to facilitate the understanding of the method and core concepts of the utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present utility model, the present description should not be construed as limiting the present utility model.

Claims

1. A multi-section climbing forklift comprises a power system and a brake system; the vehicle is characterized by further comprising a first vehicle section (1), a second vehicle section (2), a third vehicle section (3), a cockpit arranged on the first vehicle section (1) and a goods fork frame (4) arranged on the third vehicle section (3);

a pair of first wheels (101) are arranged on the first vehicle section (1), a pair of second wheels (201) are arranged on the second vehicle section (2), and a pair of third wheels (301) are arranged on the third vehicle section (3);

the advancing directions of the first vehicle section (1), the second vehicle section (2) and the third vehicle section (3) are consistent, and the first vehicle section (1), the second vehicle section (2), the third vehicle section (3) and the goods fork frame (4) are sequentially arranged along the advancing direction of the first vehicle section (1);

be equipped with on the third car section (3) and be used for driving fork frame lift (5) that goods fork frame (4) goes up and down relative third car section (3), be equipped with on the second car section (2) and be used for driving second car section (3) two three lifters (202) that go up and down relative second car section (2), be equipped with on the first car section (1) and be used for driving two lifters (102) that go up and down relative first car section (1) of second car section (2).

2. A multi-section climbing forklift truck according to claim 1, wherein the power system comprises a pair of first driving machines provided on the first vehicle section (1) and in one-to-one correspondence with the first wheels (101), the first wheels (101) being driven by the corresponding first driving machines, and a pair of third driving machines provided on the third vehicle section (3) and in one-to-one correspondence with the third wheels (301), the third wheels (301) being driven by the corresponding third driving machines.

3. The multi-section climbing forklift of claim 2, wherein the power system further comprises a forward pedal disposed in the cockpit and a reverse pedal disposed in the cockpit;

when the forward pedal is depressed: the first driving machine drives the corresponding first wheel (101) to rotate and advance, and the third driving machine drives the corresponding third wheel (301) to rotate and advance;

when the reversing pedal is depressed: the first drive machine drives the corresponding first wheel (101) to rotate in reverse, and the third drive machine drives the corresponding third wheel (301) to rotate in reverse.

4. A multi-section climbing forklift as claimed in claim 1, 2 or 3, wherein the first wheel (101) is provided with a wheel brake disc (601), the third wheel (301) is provided with a wheel brake disc (601), and the brake system comprises a plurality of dynamic brake structures corresponding to the wheel brake discs (601) one by one;

in the corresponding wheel brake disc (601) and dynamic brake structure: the dynamic braking structure comprises a dynamic braking disc (602) used for contacting a wheel braking disc (601), a braking oil cylinder (603) used for driving the dynamic braking disc (602) and an oil station used for driving the braking oil cylinder (603), wherein the oil station comprises an oil tank (604), a braking oil pump (605) used for supplying hydraulic oil in the oil tank (604) into the braking oil cylinder (603) to realize braking and an oil return pipeline (606) used for allowing the hydraulic oil in the braking oil cylinder (603) to flow back to the oil tank (604), a return spring (607) used for allowing the hydraulic oil in the braking oil cylinder (603) to flow back to the oil tank (604) through the oil return pipeline (606) is arranged in the braking oil cylinder (603), the braking oil pump (605) is communicated to the braking oil cylinder (603) through an oil supply one-way valve, and the oil return pipeline (606) is provided with an oil return one-way valve.

5. The multi-section climbing forklift as claimed in claim 4, wherein the first vehicle section (1) is provided with an upper frame (103) and a vertical sliding rod (701) which is slidably connected with the upper frame (103), the lower end of the vertical sliding rod (701) is provided with a lower wheel frame (702), the lower wheel frame (702) is provided with an auxiliary wheel (703), the vertical sliding rod (701) is sleeved with a vertical top spring (704), the upper end of the vertical top spring (704) is connected with the upper frame (103), the lower end of the vertical top spring (704) is connected with a lower wheel frame (702), all brake oil pumps (605) are connected in series in an oil pump circuit, the oil pump circuit further comprises a first contact (705) arranged at the top of the upper frame (103), a second contact (706) arranged at the top of the upper frame (103) and a conducting bar (707) arranged on the vertical sliding rod (701), a horizontal plane where the lowest point of the auxiliary wheel (703) is located is an auxiliary plane, the lowest point of the first wheel (101) is located on the first plane, and the auxiliary wheel (703) is located between any first vehicle section (101) and the first vehicle section (2);

when the difference in height between the auxiliary surface and the first surface is less than 3 cm: the vertical top spring (704) is in a compressed state, the conducting strip (707) is separated from the first contact (705), and the conducting strip (707) is separated from the second contact (706);

when the auxiliary surface is lower than the first surface and the height difference between the auxiliary surface and the first surface is greater than or equal to 3 cm: the conductive strip (707) is in contact with the first contact (705), the conductive strip (707) is in contact with the second contact (706), and the oil pump circuit is conducted.

6. The multi-section climbing forklift as claimed in claim 4, wherein the brake cylinder (603) comprises an oil cylinder body (603.1), an inner piston (603.2) and a piston rod (603.3), the oil cylinder body (603.1) is divided into an oil cavity (603 a) and an air cavity (603 b) communicated with the outside by the inner piston (603.2), the brake oil pump (605), an oil return pipeline (606) and the oil cavity (603 a) are sequentially communicated, the oil cavity (603 a), the oil return pipeline (606) and the oil tank (604) are sequentially communicated, the return spring (607) is arranged in the air cavity (603 b), one end of the return spring (607) is connected with the inner piston (603.2), and the other end of the return spring (607) is connected with the oil cylinder body (603.1).