CN206268151U - For Paver Hydraulic support and the hydraulic control circuit of side slope vibration - Google Patents

Abstract

The utility model discloses a hydraulic control circuit for paver hydraulic support and side slope vibration, which comprises a hydraulic pump, a multi-way valve, a control valve group and a solenoid valve group, and the solenoid valve group includes a solenoid valve and a two-way overflow valve , the control valve group includes a first one-way valve and a second one-way valve, the outlet B1 of the first one-way valve is connected to the oil inlet A5 of the first side slope vibration motor, and the oil outlet B5 of the first side slope vibration motor is connected to the second side slope vibration motor oil outlet B5 The side slope vibration motor oil inlet A6 is connected, the second side slope vibration motor oil outlet B6 is connected with the second one-way valve inlet A2, and the working oil port A3 of the two-way relief valve is connected with the rodless cavity of the left hydraulic support cylinder. The working port A3 of the flow valve is connected to the rodless chamber of the right hydraulic support cylinder, the working port B3 of the two-way relief valve is connected to the rod chamber of the left hydraulic support cylinder, and the working port B3 of the two-way relief valve is connected to the rod chamber of the right hydraulic support cylinder connect. The control loop can control the actions of the hydraulic support loop and the side slope vibration loop through the same control loop.

Description

Hydraulic Control Circuit for Paver Hydraulic Support and Slope Vibration

technical field

The utility model belongs to the technical field of paver hydraulic control, in particular to a hydraulic control circuit for hydraulic support of paver and side slope vibration.

Background technique

The paver is a construction equipment mainly used for paving various materials on the base and surface of the road. When the auxiliary hydraulic system of the paver is a multi-way valve system, when the paver is paving a large-width road, when the length of the screed connection is 20 meters or more, the screed is too heavy, and the main machine is easy to tilt backward. A hydraulic support device can be installed at the rear of the paver, and a rear fulcrum of the paver is added. As shown in Figure 1, this hydraulic support device includes a left connecting seat 21, a right connecting seat 22, and a left fixed arm 23 , right fixed arm 24, left swing arm 25 and right swing arm 26, described left connecting seat 21 and right connecting seat 22 are all connected with paver body, one end of described left fixed arm 23 is fixed with left connecting seat 21 Connected, the other end of the left fixed arm 23 is equipped with a left hydraulic support wheel 27, one end of the right fixed arm 24 is connected with the right connecting seat 22, and the other end of the right fixed arm 24 is equipped with a right hydraulic support wheel 28. The left fixed arm 23 is provided with a left support wheel cylinder 7 for driving the left swing arm 25 to rotate, and the right fixed arm 24 is provided with a right support wheel cylinder 8 for driving the right swing arm 26 to rotate.

However, due to the complexity of the hydraulic system of the paver and the large number of hydraulic pipelines, not all the auxiliary systems work when the paver is working. When paving large width and thickness, most of the above hydraulic support devices are used in the process of transition. , not used during paving; while slope vibration is used in the process of paving, how to control hydraulic support and slope vibration through the same road oil, so as to realize the purpose of saving installation space and energy, is a related field Technologists urgently need to solve technical problems.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the above-mentioned prior art and provide a hydraulic control circuit for the hydraulic support of the paver and the vibration of the side slope. The structure of the control loop is simple, and the actions of the hydraulic support loop and the slope vibration loop are controlled through the same control loop, which saves space and resources, is convenient to operate, and is easy to popularize and use, thereby improving the paving efficiency of the paver.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a hydraulic control circuit for the hydraulic support of the paver and the vibration of the slope, which is characterized in that it includes a hydraulic pump, a multi-way valve, a control valve group and a solenoid valve group, The outlet of the hydraulic pump is connected to the inlet of the multi-way valve through the first pipeline, and the working oil port A7 of the multi-way valve is connected to the oil inlet P3 of the control valve group through the second pipeline. The working oil port B7 of the valve is connected to the oil return port T3 of the control valve group through the third pipeline. The solenoid valve group includes a solenoid valve, a two-way relief valve, a first oil circuit and a second oil circuit. The solenoid valve It is a three-position four-way solenoid valve, the working oil port A of the solenoid valve is connected to the working oil port A4 of the two-way relief valve through the first oil circuit, and the working oil port B of the solenoid valve is connected through the second oil circuit It is connected with the working oil port B4 of the two-way relief valve. The control valve group includes a first one-way valve, a second one-way valve, a third oil circuit and a fourth oil circuit. The inlet A1 of the first one-way valve The fourth pipeline is connected to the oil return port T of the solenoid valve, the outlet B1 of the first check valve is connected to the oil inlet P3 of the control valve group through the third oil line, and the first check valve The outlet B1 of the first side slope vibration motor is also connected to the oil inlet A5 of the first side slope vibration motor through the fifth pipeline, and the oil outlet B5 of the first side slope vibration motor is connected to the inlet of the second side slope vibration motor through the sixth pipeline. The oil port A6 is connected, the oil outlet B6 of the second slope vibration motor is connected with the inlet A2 of the second check valve through the seventh pipeline, and the outlet B2 of the second check valve is connected through the first The four oil circuits are connected to the oil return port T3 of the control valve group, the outlet B2 of the second check valve is connected to the oil inlet P of the solenoid valve through the eighth pipeline, and the working oil port A3 of the two-way relief valve The ninth pipeline is connected with the rodless chamber of the left hydraulic support cylinder, the working oil port A3 of the two-way relief valve is connected with the rodless chamber of the right hydraulic support cylinder through the tenth pipeline, and the two-way relief valve is connected with the rodless chamber of the right hydraulic support cylinder through the tenth pipeline. The working oil port B3 is connected to the rod cavity of the left hydraulic support cylinder through the eleventh pipeline, and the working oil port B3 of the two-way relief valve is connected to the rod cavity of the right hydraulic support cylinder through the twelfth pipeline.

The above-mentioned hydraulic control circuit for paver hydraulic support and side slope vibration is characterized in that: the first pipeline, the second pipeline, the third pipeline, the fourth pipeline, the fifth pipeline, the The sixth pipeline, the seventh pipeline, the eighth pipeline, the ninth pipeline, the tenth pipeline, the eleventh pipeline and the twelfth pipeline are all hydraulic hoses.

Compared with the prior art, the utility model has the following advantages:

1. The structure of the utility model is simple, and the design is novel and reasonable.

2. The control valve group of the present utility model can effectively control the actions of the left hydraulic support wheel cylinder and the right hydraulic support wheel cylinder in the hydraulic support circuit during the transition process of the paver; when the left hydraulic support wheel cylinder in the hydraulic support circuit And when the right hydraulic support wheel oil cylinder is not in action, the actions of the first side slope vibration motor and the second side slope vibration motor in the side slope vibration circuit are controlled during the paving process.

3. The electromagnetic valve and the two-way overflow valve in the electromagnetic valve group of the utility model can control the extension and retraction of the piston rods of the left hydraulic support wheel cylinder and the right hydraulic support wheel cylinder in the hydraulic support circuit, and can effectively adjust the hydraulic pressure. Support the pressure in the circuit.

4. The utility model has the advantages of low cost of realization, good use effect, and convenient popularization and use.

The technical solutions of the present utility model will be further described in detail through the drawings and embodiments below.

Description of drawings

Fig. 1 is a schematic structural diagram of a hydraulic support device in the prior art.

Fig. 2 is a structural schematic diagram of the utility model.

Fig. 3 is a structural schematic diagram of the control valve group of the present invention.

Fig. 4 is a structural schematic diagram of the solenoid valve group of the present invention.

Explanation of reference signs:

1—hydraulic pump; 2—multi-way valve; 3—control valve group;

3-1—the first one-way valve; 3-2—the second one-way valve; 3-3—the third oil circuit;

3-4—the fourth oil circuit; 4—solenoid valve group; 4-1—solenoid valve;

4-2—two-way relief valve; 4-3—first oil circuit; 4-4—second oil circuit;

5—the first slope vibration motor; 6—the second slope vibration motor; 7—left hydraulic support wheel cylinder;

8—Right hydraulic support wheel cylinder; 9—First pipeline; 10—Second pipeline;

11—the third pipeline; 12—the fourth pipeline; 13—the fifth pipeline;

14—the sixth pipeline; 15—the seventh pipeline; 16—the eighth pipeline;

17—the ninth pipeline; 18—the tenth pipeline; 19—the eleventh pipeline;

20—the twelfth pipeline; 21—the left connecting seat; 22—the right connecting seat;

23—left fixed arm; 24—right fixed arm; 25—left swing arm;

26—right swing arm; 27—left hydraulic support wheel; 28—right hydraulic support wheel.

detailed description

A hydraulic control circuit for paver hydraulic support and slope vibration as shown in Figure 2, Figure 3 and Figure 4, including a hydraulic pump 1, a multi-way valve 2, a control valve group 3 and a solenoid valve group 4, The outlet of the hydraulic pump 1 is connected to the inlet of the multi-way valve 2 through the first pipeline 9, and the working oil port A7 of the multi-way valve 2 is connected to the oil inlet P3 of the control valve group 3 through the second pipeline 10 The working oil port B7 of the multi-way valve 2 is connected to the oil return port T3 of the control valve group 3 through the third pipeline 11. The solenoid valve group 4 includes a solenoid valve 4-1, a two-way relief valve 4- 2. The first oil circuit 4-3 and the second oil circuit 4-4, the solenoid valve 4-1 is a three-position four-way solenoid valve, and the working oil port A of the solenoid valve 4-1 passes through the first oil circuit 4-3 is connected to the working oil port A4 of the two-way overflow valve 4-2, and the working oil port B of the solenoid valve 4-1 is connected to the working oil port A4 of the second oil circuit 4-4 and the two-way overflow valve 4-2. The oil port B4 is connected, and the control valve group 3 includes a first one-way valve 3-1, a second one-way valve 3-2, a third oil circuit 3-3 and a fourth oil circuit 3-4, and the first The inlet A1 of the one-way valve 3-1 is connected to the oil return port T of the solenoid valve 4-1 through the fourth pipeline 12, and the outlet B1 of the first one-way valve 3-1 is connected through the third oil circuit 3-1. 3 is connected to the oil inlet P3 of the control valve group 3, and the outlet B1 of the first check valve 3-1 is also connected to the oil inlet A5 of the first side slope vibration motor 5 through the fifth pipeline 13. The oil outlet B5 of the first side slope vibration motor 5 is connected to the oil inlet A6 of the second side slope vibration motor 6 through the sixth pipeline 14, and the oil outlet B6 of the second side slope vibration motor 6 is connected through the seventh pipeline 14. The pipeline 15 is connected to the inlet A2 of the second one-way valve 3-2, and the outlet B2 of the second one-way valve 3-2 is connected to the oil return of the control valve group 3 through the fourth oil circuit 3-4. The outlet B2 of the second one-way valve 3-2 is connected to the oil inlet P of the solenoid valve 4-1 through the eighth pipeline 16, and the working oil port A3 of the two-way relief valve 4-2 The ninth pipeline 17 is connected to the rodless cavity of the left hydraulic support cylinder 7, and the working oil port A3 of the two-way relief valve 4-2 is connected to the rodless cavity of the right hydraulic support cylinder 8 through the tenth pipeline 18, The working oil port B3 of the two-way relief valve 4-2 is connected with the rod cavity of the left hydraulic support cylinder 7 through the eleventh pipeline 19, and the working oil port B3 of the two-way relief valve 4-2 is connected through the eleventh pipeline 19. The second pipeline 20 is connected with the rod cavity of the right hydraulic support cylinder 8 .

In this embodiment, when the hydraulic control circuit is in use, the high-pressure oil from the hydraulic pump 1 enters the multi-way valve 2 through the first pipeline 9, and when the working oil port A7 of the multi-way valve 2 outputs high-pressure oil, the The high-pressure oil enters the oil inlet P3 of the control valve group 3 through the second pipeline 10. At this time, the high-pressure oil enters the outlet B1 of the first check valve 3-1 through the third oil passage 3-3, and then from the The outlet B1 of the first one-way valve 3-1 reaches the oil inlet A5 of the first side slope vibration motor 5 through the fifth pipeline 13, and then pushes the first side slope vibration motor 5 to rotate. The oil in the slope vibration motor 5 enters the oil inlet A6 of the second slope vibration motor 6 through the sixth pipeline 14, and then pushes the second slope vibration motor 6 to rotate, and the low-pressure oil flows from the second slope vibration motor The oil outlet B6 of 6 flows back to the working oil port A2 of the control valve group 3 through the seventh pipeline 15, and then opens the second check valve 3-2, flows to the outlet B2 of the second check valve 3-2, and then It flows back to the oil return port T3 of the control valve group 3 through the fourth oil passage 3-4, and finally flows back to the multi-way valve 2 through the third pipeline 11. This moment, the left hydraulic support wheel oil cylinder 7 and the right hydraulic support wheel oil cylinder 8 of the hydraulic support device all do not act.

During the working process, the high-pressure oil from the hydraulic pump 1 enters the inlet of the multi-way valve 2. When the working oil port B7 of the multi-way valve 2 outputs high-pressure oil, the high-pressure oil enters the control valve group through the third pipeline 11 The oil return port T3 of 3 enters the outlet B2 of the second check valve 3-2 through the fourth oil passage 3-4, and then enters the oil inlet P of the solenoid valve 4-1 through the eighth pipeline 16. At this time, if the left position of the solenoid valve 4-1 is energized, the high-pressure oil enters the two-way relief valve 4-2 from the solenoid valve 4-1 through the first oil circuit 4-3 and reaches the work of the two-way relief valve 4-2. Oil port A3, and then through the ninth pipeline 17 and the tenth pipeline 18 to push the piston rods of the left hydraulic support wheel cylinder 7 and the right hydraulic support wheel cylinder 8 to extend, and the low-pressure oil passes through the eleventh pipeline 19 and the tenth pipeline The second pipeline 20 flows back to the working oil port B3 of the two-way relief valve 4-2, then flows into the solenoid valve 4-1 through 4-4, and then flows back to the first one-way valve 3-1 through the fourth pipeline 12 The inlet A1 of the first one-way valve 3-1 flows back to the oil inlet P3 of the control valve group 3 through the outlet B1 of the first one-way valve 3-1 through 3-3, and then flows back to the multi-way valve 2 through the second pipeline 10.

If the right position of the solenoid valve 4-1 is energized, the high-pressure oil enters the two-way relief valve 4-2 through the second oil circuit 4-4 and reaches the working oil port B3 of the two-way relief valve 4-2, and then passes through The eleventh pipeline 19 and the twelfth pipeline 20 enter the rod cavity of the left hydraulic support wheel cylinder 7 and the right hydraulic support wheel cylinder 8 respectively, so that the piston rods of the left hydraulic support wheel cylinder 7 and the right hydraulic support wheel cylinder 8 retracted, the low-pressure oil flows back to the working oil port A3 of the two-way relief valve 4-2 through the ninth pipeline 17 and the tenth pipeline 18, and then enters from the two-way relief valve 4-2 through the first oil circuit 4-3 Solenoid valve 4-1, then enters the inlet A1 of the first one-way valve 3-1 through the fourth pipeline 12, and then flows back to the oil inlet P3 of the control valve group 3 through the third oil circuit 3-3, and then passes through The second pipeline 10 flows back to the multi-way valve 2 . At this moment, the first side slope vibration motor 5 and the second side slope vibration motor 6 do not work.

In this embodiment, the control valve group 3 can effectively control the actions of the left hydraulic support wheel cylinder 7 and the right hydraulic support wheel cylinder 8 in the hydraulic support circuit during the transition process of the paver; When the wheel oil cylinder 7 and the right hydraulic support wheel oil cylinder 8 are inactive, the actions of the first side slope vibration motor 5 and the second side slope vibration motor 6 in the side slope vibration circuit are controlled during paving. The structure of the control loop is simple, and the actions of the hydraulic support loop and the slope vibration loop are controlled through the same control loop, which saves space and resources, is convenient to operate, and is easy to popularize and use, thereby improving the paving efficiency of the paver.

In this embodiment, the solenoid valve 4-1 and the two-way overflow valve 4-2 in the solenoid valve group 4 can control the piston rods of the left hydraulic support wheel cylinder 7 and the right hydraulic support wheel cylinder 8 in the hydraulic support circuit. Extends and retracts and effectively regulates the pressure in the hydraulic support circuit.

In this embodiment, the first pipeline 9, the second pipeline 10, the third pipeline 11, the fourth pipeline 12, the fifth pipeline 13, the sixth pipeline 14, the seventh pipeline 15, the The eighth pipeline 16 , the ninth pipeline 17 , the tenth pipeline 18 , the eleventh pipeline 19 and the twelfth pipeline 20 are hydraulic hoses.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any simple modifications, changes and equivalent structural transformations made to the above embodiments according to the technical essence of the present utility model still belong to Within the scope of protection of the technical solution of the utility model.

Claims (2)

1. The hydraulic control circuit for the hydraulic support of the paver and the vibration of the slope is characterized in that it includes a hydraulic pump (1), a multi-way valve (2), a control valve group (3) and a solenoid valve group (4), The outlet of the hydraulic pump (1) is connected to the inlet of the multi-way valve (2) through the first pipeline (9), and the working oil port A7 of the multi-way valve (2) is connected through the second pipeline (10) It is connected with the oil inlet P3 of the control valve group (3), and the working oil port B7 of the multi-way valve (2) is connected with the oil return port T3 of the control valve group (3) through the third pipeline (11). The solenoid valve group (4) includes a solenoid valve (4-1), a two-way relief valve (4-2), a first oil circuit (4-3) and a second oil circuit (4-4), and the solenoid valve (4-1) is a three-position four-way solenoid valve, and the working oil port A of the solenoid valve (4-1) passes through the first oil circuit (4-3) and the working oil of the two-way overflow valve (4-2). The working oil port B of the solenoid valve (4-1) is connected with the working oil port B4 of the two-way relief valve (4-2) through the second oil circuit (4-4), and the control The valve group (3) includes a first one-way valve (3-1), a second one-way valve (3-2), a third oil circuit (3-3) and a fourth oil circuit (3-4), the The inlet A1 of the first one-way valve (3-1) is connected with the oil return port T of the solenoid valve (4-1) through the fourth pipeline (12), and the outlet of the first one-way valve (3-1) B1 is connected to the oil inlet P3 of the control valve group (3) through the third oil passage (3-3), and the outlet B1 of the first check valve (3-1) is also passed through the fifth pipeline (13 ) is connected with the oil inlet A5 of the first side slope vibration motor (5), and the oil outlet B5 of the first side slope vibration motor (5) is connected with the second side slope vibration motor ( 6) is connected to the oil inlet A6, and the oil outlet B6 of the second slope vibration motor (6) is connected to the inlet A2 of the second one-way valve (3-2) through the seventh pipeline (15) , the outlet B2 of the second one-way valve (3-2) is connected to the oil return port T3 of the control valve group (3) through the fourth oil passage (3-4), and the second one-way valve ( The outlet B2 of 3-2) is connected to the oil inlet P of the solenoid valve (4-1) through the eighth pipeline (16), and the working oil port A3 of the two-way relief valve (4-2) is connected through the ninth pipeline The road (17) is connected to the rodless chamber of the left hydraulic support cylinder (7), and the working oil port A3 of the two-way relief valve (4-2) is connected to the right hydraulic support cylinder (8) through the tenth pipeline (18). The working oil port B3 of the two-way overflow valve (4-2) is connected with the rod cavity of the left hydraulic support cylinder (7) through the eleventh pipeline (19), and the two-way overflow The working oil port B3 of the valve (4-2) is connected with the rod cavity of the right hydraulic support cylinder (8) through the twelfth pipeline (20). 2. The hydraulic control circuit for paver hydraulic support and slope vibration according to claim 1, characterized in that: the first pipeline (9), the second pipeline (10), the third pipeline Road (11), fourth pipeline (12), fifth pipeline (13), sixth pipeline (14), seventh pipeline (15), eighth pipeline (16), ninth pipeline ( 17), the tenth pipeline (18), the eleventh pipeline (19) and the twelfth pipeline (20) are hydraulic hoses.