CN214007644U

CN214007644U - Balance brake mechanism of walking motor

Info

Publication number: CN214007644U
Application number: CN202023292705.5U
Authority: CN
Inventors: 曹改荣; 李禧; 韩新宁
Original assignee: Sks Hydraulic Technology Co ltd
Current assignee: Sks Hydraulic Technology Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-08-20
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a balanced arrestment mechanism of walking motor, including two overflow valves and a relief pressure valve, two overflow valves and the equal integrated equipment of a relief pressure valve are on a steel balance valve piece, and steel balance valve piece is installed and is covered after the walking motor, and the back lid has the lid behind 100 types of hydraulic flow channel for inside shaping. The utility model discloses a balanced valve block of steel part has replaced traditional foundry goods balanced valve to with two overflow valves and a relief pressure valve integration on balanced valve block of steel part, lid behind the 100 types of cooperation a section runner and processing are simple, the equipment is simple, high-efficient. The steel part balance valve block can save the die sinking cost, and meanwhile, the steel part material is stable relative to the casting material, the product percent of pass is high, and the service life is long.

Description

Balance brake mechanism of walking motor

Technical Field

The utility model relates to a hydraulic pressure plunger motor's technical field, especially a walking motor's balanced arrestment mechanism.

Background

In the prior art, in order to maintain the walking stability of the walking machine, a balance valve is usually arranged to prevent the motor from stalling caused by insufficient oil supply in an open circuit. In a conventional brake mechanism, as shown in fig. 1, two relief valves (2) are assembled from a 181-type rear cover (42) of a traveling motor (4), and then assembled with a balance valve (7). The structure shown in figure 1 is formed, in the structure, the two inserted overflow valves (2) can set the highest pressure of the motor, and the balance valve (7) mainly has the functions of pressure reduction and balance. The back lid runner is complicated in this design, and can not the exclusive use, and balanced valve body is the casting simultaneously, and the product that the foundry sand core skew or the material is loose to cause often can appear scrapping in the course of working. In addition, after a part of balance valves are used for a period of time, the balance valves fail due to the fact that original air holes which cannot be checked by naked eyes are continuously enlarged under pressure impact, and the service life of the whole motor is shortened. Meanwhile, the pressure reducing valve in the balance valve has higher requirement on the machining precision, and when the precision deviation is larger, the pressure difference between two sides is often large, so that the product performance is influenced.

Disclosure of Invention

The utility model aims to solve the technical problem to the current situation of above-mentioned prior art, and provide a compact structure, low in manufacturing cost, long service life, balanced effectual walking motor's balanced arrestment mechanism.

The utility model provides a technical scheme that above-mentioned technical problem adopted does:

the utility model provides a balanced brake mechanism of walking motor, includes two overflow valves and a relief pressure valve, and two overflow valves and a relief pressure valve are all integrated equipment on a steel balance valve block, and steel balance valve block is installed and is covered after the walking motor, and the back lid has the 100 type back lids of hydraulic flow channel for the inside shaping.

In order to optimize the technical scheme, the specific measures adopted further comprise:

the two overflow valves comprise a left overflow valve and a right overflow valve; the oil inlet of the left overflow valve is communicated with the port A1 of the walking motor, the oil outlet of the left overflow valve is communicated with the port MA and the port A of the oil-way system, the oil inlet of the right overflow valve is communicated with the port B1 of the walking motor, and the oil outlet of the right overflow valve is communicated with the port MB and the port B of the oil-way system; and a control oil port of the left overflow valve is communicated with an oil outlet of the right overflow valve, and a control oil port of the right overflow valve is communicated with an oil outlet of the left overflow valve.

The port A1 of the traveling motor is communicated with a port MA1, and the port B1 of the traveling motor is communicated with a port MB 1; a left connecting oil duct is arranged between the oil inlet and the oil outlet of the left overflow valve, and a left check valve is installed in the left connecting oil duct; and a right connecting oil duct is arranged between the oil inlet and the oil outlet of the right overflow valve, and a right check valve is installed in the right connecting oil duct.

And a pressure selection valve is further integrated in the steel part balance valve block, a first selection port of the pressure selection valve is communicated with an oil outlet of the left overflow valve, a second selection port of the pressure selection valve is communicated with an oil outlet of the right overflow valve, and the oil outlet of the pressure selection valve is connected with an oil inlet end of the pressure reducing valve.

The oil outlet end of the pressure reducing valve is communicated with a BR port and a BR1 port of the oil-way system, and the pressure reducing valve is provided with a control port communicated with a DR port and a DR1 port of the oil-way system.

Compared with the prior art, the utility model discloses a steel spare balanced valve piece has replaced traditional foundry goods balanced valve to with two overflow valves and a relief pressure valve integration on steel spare balanced valve piece, lid behind the 100 types that cooperation a section runner and processing are simple, the equipment is simple, high-efficient. The steel part balance valve block can save the die sinking cost, and meanwhile, the steel part material is stable relative to the casting material, the product percent of pass is high, and the service life is long.

Drawings

FIG. 1 is a schematic diagram of a prior art balance brake mechanism;

FIG. 2 is a schematic diagram of the operation of a prior art balance brake mechanism;

fig. 3 is a schematic structural diagram of the present invention;

fig. 4 is a working principle diagram of the present invention.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

Fig. 3 to 4 are schematic diagrams of the structure and the operation principle of the present invention.

Wherein the reference numerals are: the hydraulic control system comprises an overflow valve 1, a left overflow valve 11, a right overflow valve 12, a pressure reducing valve 2, a steel balance valve block 3, a traveling motor 4, a 100-type rear cover 41, a 181-type rear cover 42, a left check valve 51, a right check valve 52, a pressure selection valve 6 and a balance valve 7.

Fig. 1 to 2 show the structure and the operation principle of a balance brake mechanism of a walking motor in the prior art, as shown in the figures, a back cover assembled with the walking motor 4 is a 181-type back cover 42, two relief valves 1 are inserted into the 181-type back cover 42, and a balance valve 7 matched with the two relief valves 1 is further assembled below the 181-type back cover 42. The balance valve block of the balance valve 7 is a casting part, and the cast sand core is deviated or the product caused by loose material is scrapped in the machining process. Meanwhile, the inner flow channel of the rear cover with the structure is complex to process and cannot be used independently, so that the production cost is relatively high, and the product precision deviation is large.

As shown in fig. 3 and 4, the utility model provides a novel walking motor's balanced arrestment mechanism, this balanced arrestment mechanism include two overflow valves 1 and a relief pressure valve 2, the utility model discloses a two overflow valves 1 and a relief pressure valve 2) all integrated equipment on a steel spare machine-shaping's steel spare balanced valve block 3, then cover after installing walking motor 4 through this steel spare balanced valve block 3, the utility model discloses a lid 41 behind the 100 types that the back lid has hydraulic flow channel for inside shaping. Because two overflow valves 1 and a pressure reducing valve 2 are integrated on the steel balance valve block 3, the hydraulic flow passage in the 100-type rear cover 41 is very simple to machine, and the machining cost is low. Particularly, the steel part balance valve block 3 adopts a steel part, the cost of opening the die of the traditional balance valve block is saved, and the material performance of the steel part is more stable relative to that of a casting, so that the product percent of pass is relatively high, and the service life can be greatly prolonged.

As shown in fig. 2, for convenience of description and understanding, one of the two relief valves 1 is named as a left relief valve 11, and the other of the two relief valves 1 is named as a right relief valve 12. The oil inlet of the left overflow valve 11 is communicated with the port A1 of the walking motor 4, the oil outlet of the left overflow valve 11 is communicated with the port MA and the port A of the oil-way system, the oil inlet of the right overflow valve 12 is communicated with the port B1 of the walking motor 4, and the oil outlet of the right overflow valve 12 is communicated with the port MB and the port B of the oil-way system; the control oil port of the left overflow valve 11 is communicated with the oil outlet of the right overflow valve 12, and the control oil port of the right overflow valve 12 is communicated with the oil outlet of the left overflow valve 11.

In the embodiment, the port a1 of the travel motor 4 is communicated with the port MA1, and the port B1 of the travel motor 4 is communicated with the port MB 1; a left connecting oil passage is arranged between the oil inlet and the oil outlet of the left overflow valve 11, and a left check valve 51 is installed in the left connecting oil passage. The utility model discloses a be provided with the right side between the oil inlet and the oil-out of right overflow valve 12 and connect the oil duct, install right check valve 52 in this right side connection oil duct. The left check valve 51 and the right check valve 52 can only conduct in a single direction, and the left check valve 51 can be pushed open by the hydraulic oil at the oil outlet of the left overflow valve 11 only when the pressure of the hydraulic oil at the oil outlet of the left overflow valve 11 is greater than that of the hydraulic oil at the port A1. Similarly, the right check valve 52 can be pushed open by the hydraulic oil at the oil outlet of the right overflow valve 12 only when the pressure of the hydraulic oil at the oil outlet of the right overflow valve 12 is greater than the pressure of the hydraulic oil at the port B1.

In the embodiment, the utility model discloses a still integrated pressure selection valve 6 in steel spare balanced valve block 3, the first select port of pressure selection valve 6 is linked together with the oil-out of left overflow valve 11, and the second select port of pressure selection valve 6 is linked together with the oil-out of right overflow valve 12, and the oil-in end of relief pressure valve 2 is connected to the oil-out of this pressure selection valve 6.

In the embodiment, the utility model discloses a pressure reducing valve 2's the oil end and oil piping's BR mouth and BR1 mouth looks UNICOM, this pressure reducing valve 2 have the control mouth that is linked together with oil piping's DR mouth and DR1 mouth.

While the preferred embodiments of the present invention have been illustrated, various changes and modifications may be made by those skilled in the art without departing from the scope of the present invention.

Claims

1. The utility model provides a balanced brake mechanism of walking motor, includes two overflow valves (1) and a relief pressure valve (2), characterized by: the two overflow valves (1) and the one pressure reducing valve (2) are assembled on a steel balance valve block (3) in an integrated mode, the steel balance valve block (3) is installed on a rear cover of a walking motor (4), and the rear cover is a 100-type rear cover (41) with a hydraulic flow channel formed inside.

2. The balance brake mechanism of a travel motor according to claim 1, wherein: the two overflow valves (1) comprise a left overflow valve (11) and a right overflow valve (12); the oil inlet of the left overflow valve (11) is communicated with an A1 port of the walking motor (4), the oil outlet of the left overflow valve (11) is communicated with an MA port and an A port of an oil way system, the oil inlet of the right overflow valve (12) is communicated with a B1 port of the walking motor (4), and the oil outlet of the right overflow valve (12) is communicated with an MB port and a B port of the oil way system; the control oil port of the left overflow valve (11) is communicated with the oil outlet of the right overflow valve (12), and the control oil port of the right overflow valve (12) is communicated with the oil outlet of the left overflow valve (11).

3. The balance brake mechanism of a travel motor according to claim 2, wherein: the port A1 of the walking motor (4) is communicated with a port MA1, and the port B1 of the walking motor (4) is communicated with a port MB 1; a left connecting oil channel is arranged between the oil inlet and the oil outlet of the left overflow valve (11), and a left check valve (51) is installed in the left connecting oil channel; a right connecting oil passage is arranged between the oil inlet and the oil outlet of the right overflow valve (12), and a right one-way valve (52) is installed in the right connecting oil passage.

4. The balance brake mechanism of a travel motor according to claim 3, wherein: the steel balance valve block (3) is further integrated with a pressure selection valve (6), a first selection port of the pressure selection valve (6) is communicated with an oil outlet of the left overflow valve (11), a second selection port of the pressure selection valve (6) is communicated with an oil outlet of the right overflow valve (12), and the oil outlet of the pressure selection valve (6) is connected with an oil inlet end of the pressure reducing valve (2).

5. The balance brake mechanism of a travel motor according to claim 4, wherein: the oil outlet end of the pressure reducing valve (2) is communicated with a BR port and a BR1 port of the oil-way system, and the pressure reducing valve (2) is provided with a control port communicated with a DR port and a DR1 port of the oil-way system.