Passive operation valve block device of hydraulic motor

Abstract

The utility model provides a hydraulic motor passive operation valve block device which comprises a hydraulic motor, a valve block and an electromagnetic directional valve, the valve block is provided with an oil passing port I, an oil passing port II and an external control oil port, and two working ports of the electromagnetic directional valve are communicated with the oil passing port I and the oil passing port II respectively. The oil passing port I and the oil passing port II communicate with the hydraulic motor through a first oil way and a second oil way correspondingly. A balance valve I is connected to the first oil way in series, and a pressure guide opening of the balance valve I communicates with the second oil way. A balance valve II is connected to the second oil way in series, and a pressure guide opening of the balance valve II communicates with the first oil way. A third oil way is communicated between the first oil way and the second oil way, a hydraulic control reversing valve is connected in series in the third oil way, and the external control oil port is communicated with a hydraulic control port of the hydraulic control reversing valve; the passive operation valve block device of the hydraulic motor overcomes the defects that a clutch device is additionally arranged in existing hydraulic winding equipment, so that the manufacturing cost is high, and the size of the equipment is increased.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic winches, in particular to a hydraulic motor passive operation valve block device. Background Art

[0002] With the continuous development and progress of industrialization, construction machinery and ship machinery are also developing towards intelligence and convenience. For example, when using a hydraulic winch, during the lifting process, due to a malfunction in the main control system of the hydraulic winch, the heavy object will be suspended in the air and cannot land in time, causing unnecessary danger. In order to solve the problem of suspension, some manufacturers will add an external control clutch device. Although it can solve this problem, its manufacturing cost is high and it will also increase the overall volume of the hydraulic winch. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] The problem to be solved by the utility model is to provide a hydraulic motor passive operation valve block device to overcome the defects of high manufacturing cost and increased equipment volume caused by the external clutch device in the existing hydraulic hoisting equipment.

[0005] (II) Technical solution

[0006] In order to solve the technical problem, the utility model provides a hydraulic motor passive operation valve block device, comprising a hydraulic motor, a valve block and a three-position four-way electromagnetic reversing valve, wherein the valve block is provided with an oil port I, an oil port II and an external control oil port, and the two working ports of the electromagnetic reversing valve are respectively connected with the oil port I and the oil port II, and the oil port I and the oil port II are respectively connected with the hydraulic motor through a first oil circuit and a second oil circuit; a balancing valve I is connected in series with the first oil circuit, and the pressure guide port of the balancing valve I is connected with the second oil circuit; a balancing valve II is connected in series with the second oil circuit, and the pressure guide port of the balancing valve II is connected with the first oil circuit;

[0007] A third oil circuit is connected between the first oil circuit and the second oil circuit, and a hydraulically controlled reversing valve is connected in series in the third oil circuit; the external control oil port is connected to the hydraulic control port of the hydraulically controlled reversing valve, so that when oil enters the external control oil port, the third oil circuit is connected, and then the first oil circuit and the second oil circuit are connected.

[0008] In some embodiments, a brake for braking the hydraulic motor is also included, and a brake oil circuit is provided in the valve block, and the brake oil circuit is connected to the brake oil port of the brake; when oil is introduced into the oil port I, the oil port II or the external control oil port, the brake oil circuit is connected, so that oil is introduced into the brake oil port, and the brake is released.

[0009] In some embodiments, a fourth oil circuit is connected between the first oil circuit and the second oil circuit, a one-way valve I and a one-way valve II with opposite conduction directions are connected in series on the fourth oil circuit, and the hydraulic control port of the hydraulically controlled reversing valve is connected to the oil circuit between the one-way valve I and the one-way valve II.

[0010] In some embodiments, the brake oil circuit is connected in sequence with a shuttle valve I, a shuttle valve II and a sequence valve, one inlet of the shuttle valve I is connected to the first oil circuit, the other inlet thereof is connected to the second oil circuit, and the working port thereof is connected to an inlet of the shuttle valve II; the other inlet of the shuttle valve II is connected to the external control oil port, the working port thereof is connected to the sequence valve, and the sequence valve is connected to the brake oil port.

[0011] In some embodiments, one of the external oil control ports is connected to the hydraulic control port of the hydraulically controlled reversing valve, and the other is connected to an inlet of the shuttle valve II. The external oil control port includes a first external oil control port and a second external oil control port that are connected to each other.

[0012] In some embodiments, a throttle valve is connected in series to the third oil circuit; and a pressure reducing valve is connected in series between the working port of the shuttle valve II and the sequence valve.

[0013] In some embodiments, the electromagnetic reversing valve has an oil inlet and an oil return port. When the electromagnetic reversing valve is in a middle position, the oil port I and the oil port II are both connected to the oil return port; when the electromagnetic reversing valve is in a left position, the oil inlet is connected to the oil port I, and the oil return port is connected to the oil port II; when the electromagnetic reversing valve is in a right position, the oil inlet is connected to the oil port II, and the oil return port is connected to the oil port I.

[0014] In some embodiments, the valve block is provided with a brake pressure measuring port, which is connected between the sequence valve and the brake oil port. It also includes an oil drain port, and the hydraulic motor, the hydraulically controlled reversing valve, the pressure reducing valve and the sequence valve are all connected to the oil drain port.

[0015] (III) Beneficial effects

[0016] The utility model provides a hydraulic motor passive operation valve block device. When a main control system in a hydraulic hoisting device fails, the electromagnetic reversing valve is de-energized and located in the middle position, and oil is injected into the external oil control port X1 or X2 by a hand pump, and the hydraulic control reversing valve is turned on, so that the oil port I and the oil port II are turned on, and at the same time, the brake oil port Br is opened for oil inlet, and an external pulling force (or resistance) is added, so that the hydraulic motor can be passively operated to slowly lower the heavy object. The above device is used to replace the external clutch device. On the premise of meeting the function, the manufacturing cost is lower, and the space is not occupied, and the overall volume of the equipment will not be increased, thereby overcoming the defects of the external clutch device in the existing hydraulic hoisting equipment that leads to high manufacturing cost and increased equipment volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the hydraulic principle of a hydraulic motor passive operation valve block device of the utility model;

[0019] Figure 2 This is a schematic diagram of the hydraulic principle of a hydraulic motor passive operation valve block device after removing the brake oil circuit;

[0020] Figure 3 This is a schematic diagram of the hydraulic principle of a brake oil circuit of a hydraulic motor passively operated valve block device of the utility model;

[0021] The names of the components corresponding to the various figure marks in the figure are: 1. Hydraulic motor; 2. Valve block; 21. Balance valve I; 22. Balance valve II; 23. Hydraulic control reversing valve; 24. Check valve I; 25. Check valve II; 26. Shuttle valve I; 27. Shuttle valve II; 28. Sequence valve; 29. ​​Throttle valve; 30. Pressure reducing valve; 201. First oil circuit; 202. Second oil circuit; 203. Third oil circuit; 204. Brake oil circuit; 205. Fourth oil circuit; 3. Solenoid reversing valve; 4. Brake; A. Oil port I; B. Oil port II; P. Oil inlet; T. Oil return port; X1. First external control oil port; X2. Second external control oil port; Br. Brake oil port; MBr. Brake pressure measuring port; L. Oil drain port. DETAILED DESCRIPTION

[0022] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0024] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0025] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0026] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0027] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0028] See also Figures 1 to 3 The utility model provides a hydraulic motor passive operation valve block device, comprising a hydraulic motor 1, a valve block 2, a three-position four-way electromagnetic reversing valve 3 and a brake 4 for braking the hydraulic motor 1, wherein the brake 4, the hydraulic motor 1 and the electromagnetic reversing valve 3 are all located outside the valve block 2, and the brake 4 is arranged close to the hydraulic motor 1.

[0029] See also Figure 1 and Figure 2, the valve block 2 is provided with an oil port IA, an oil port IIB and an external control oil port, and the oil port IA and the oil port IIB are arranged adjacent to each other. The two working ports of the electromagnetic reversing valve 3 are respectively connected with the oil port IA and the oil port IIB, and the oil port IA and the oil port IIB are respectively connected with the hydraulic motor 1 through the first oil circuit 201 and the second oil circuit 202, and the first oil circuit 201 and the second oil circuit 202 are arranged symmetrically. A balancing valve I21 is connected in series to the first oil circuit 201, and the pressure guide port of the balancing valve I21 is connected to the second oil circuit 202; a balancing valve II22 is connected in series to the second oil circuit 202, and the pressure guide port of the balancing valve II22 is connected to the first oil circuit 201; wherein, the structures of the balancing valve I21 and the balancing valve II22 are the same.

[0030] See also Figure 1 and Figure 2 The first oil circuit 201 and the second oil circuit 202 are connected with a third oil circuit 203, and a hydraulically controlled reversing valve 23 is connected in series in the third oil circuit 203; the external control oil port is connected with the hydraulic control port of the hydraulically controlled reversing valve 23, so that when oil enters the external control oil port, the third oil circuit 203 is connected, and then the first oil circuit 201 and the second oil circuit 202 are connected. The hydraulically controlled reversing valve 23 is a two-position two-way valve. When there is no pressure at the external control oil port, the hydraulically controlled reversing valve 23 is in the lower position and the hydraulically controlled reversing valve 23 is disconnected.

[0031] See also Figure 1 and Figure 3 A brake oil circuit 204 is provided in the valve block 2, and the brake oil circuit 204 is connected with the brake oil port Br of the brake 4; when oil flows into any one of the oil port IA, the oil port IIB and the external control oil port, the brake oil circuit 204 is connected, so that oil flows into the brake oil port Br, and the brake 4 is released.

[0032] In some embodiments, Figure 1 and Figure 2 As shown, a fourth oil circuit 205 is connected between the first oil circuit 201 and the second oil circuit 202, and a check valve I24 and a check valve II25 with opposite conduction directions are connected in series on the fourth oil circuit 205, and the hydraulic control port of the hydraulic control reversing valve 23 is connected to the oil circuit between the check valve I24 and the check valve II25. The check valve I24 and the check valve II25 are arranged to play the role of replenishing oil when the motor is passively running.

[0033] In some embodiments, Figure 1 and Figure 3As shown, the brake oil circuit 204 is connected with shuttle valve I 26, shuttle valve II 27 and sequence valve 28 in sequence, one inlet of shuttle valve I 26 is connected with the first oil circuit 201, the other inlet thereof is connected with the second oil circuit 202, and its working port is connected with an inlet of shuttle valve II 27; the other inlet of shuttle valve II 27 is connected with the external control oil port, and its working port is connected with sequence valve 28, and sequence valve 28 is connected with brake oil port Br, and a pressure reducing valve 30 is connected in series between the working port of shuttle valve II 27 and sequence valve 28.

[0034] In some embodiments, Figure 1 and Figure 2 As shown, one of the external control oil ports is connected to the hydraulic control port of the hydraulic control reversing valve 23, and the other is connected to an inlet of the shuttle valve II 27. The external control oil ports include a first external control oil port X1 and a second external control oil port X2 that are connected to each other. Two external control oil ports are used to ensure the reliability of its use.

[0035] In some embodiments, Figure 1 and Figure 2 As shown, a throttle valve 29 is connected in series to the third oil circuit 203. The throttle valve 29 is provided to adjust the speed of the passive operation of the motor, thereby adjusting the speed of the lowering speed.

[0036] In some embodiments, Figure 1 and Figure 2 As shown, the electromagnetic reversing valve 3 has an oil inlet P and an oil return port T. When the electromagnetic reversing valve 3 is in the middle position, the oil port IA and the oil port IIB are both connected to the oil return port T; when the electromagnetic reversing valve 3 is in the left position, the oil inlet P is connected to the oil port IA, and the oil return port T is connected to the oil port IIB; when the electromagnetic reversing valve 3 is in the right position, the oil inlet P is connected to the oil port IIB, and the oil return port T is connected to the oil port IA. When hovering, the electromagnetic reversing valve needs to be placed in the middle position.

[0037] In some embodiments, Figure 1 and Figure 3 As shown, a brake pressure measuring port MBr is provided on the valve block 2, and the brake pressure measuring port MBr is connected between the sequence valve 28 and the brake oil port Br. The brake pressure measuring port is provided to facilitate the detection of the pressure at the brake oil port, which is more convenient to use.

[0038] In some embodiments, Figure 1 and Figure 3 As shown, it also includes an oil drain port L, and the hydraulic motor 1, the hydraulically controlled reversing valve 23, the pressure reducing valve 30 and the sequence valve 28 are all connected to the oil drain port L.

[0039] The use process of this hydraulic motor passive operation valve block device is as follows:

[0040] When the electromagnetic reversing valve 3 is in the left position, the oil inlet P and the oil port IA are connected, the hydraulic oil enters the oil port IA through the oil inlet P, and enters the hydraulic motor 1 through the one-way valve of the balance valve I; at the same time, the hydraulic oil enters the pressure-conducting port of the balance valve II, and the balance valve II is turned on; at the same time, the hydraulic oil opens the brake through the shuttle valve I, shuttle valve II, the pressure reducing valve and the sequence valve to release the brake; in this way, a circulation is formed among the oil inlet P, the oil port IA, the hydraulic motor 1, the oil port IIB, the oil return port T and the oil tank, and the hydraulic motor runs clockwise.

[0041] When the electromagnetic reversing valve 3 is in the right position, the hydraulic oil enters the oil port ⅡB through the oil inlet P, and enters the hydraulic motor 1 through the one-way valve of the balance valve Ⅱ; at the same time, the hydraulic oil enters the pressure port of the balance valve Ⅰ, and conducts the balance valve Ⅰ; at the same time, the hydraulic oil opens the brake through the shuttle valve Ⅰ, the shuttle valve Ⅱ, the pressure reducing valve and the sequence valve to release the brake; in this way, a circulation is formed among the oil inlet P, the oil port ⅡB, the hydraulic motor 1, the oil port IA, the oil return port T and the oil tank, and the hydraulic motor 1 runs counterclockwise.

[0042] When the electromagnetic reversing valve 3 is in the middle position, the balance valve I and the balance valve II lock the oil port IA and the oil port IIB, and oil enters the first external control oil port X1 or the second external control oil port X2 to open the hydraulic control reversing valve. At the same time, the other hydraulic oil opens the brake through the shuttle valve II, the pressure reducing valve and the sequence valve to release the brake; in this way, a circulation is formed between the oil port IA and the oil port IIB and the hydraulic control reversing valve and the throttle valve; under the action of external force, the motor can operate passively (the two one-way valves play the role of oil replenishment).

[0043] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0044] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A hydraulic motor passive operation valve block device, characterized in that: The invention comprises a hydraulic motor (1), a valve block (2) and a three-position four-way electromagnetic reversing valve (3); the valve block (2) is provided with an oil port I (A), an oil port II (B) and an external control oil port; the two working ports of the electromagnetic reversing valve (3) are respectively connected to the oil port I (A) and the oil port II (B); the oil port I (A) and the oil port II (B) are respectively connected to the hydraulic motor (1) through a first oil circuit (201) and a second oil circuit (202); a balancing valve I (21) is connected in series to the first oil circuit (201); the pressure guide port of the balancing valve I (21) is connected to the second oil circuit (202); a balancing valve II (22) is connected in series to the second oil circuit (202); the pressure guide port of the balancing valve II (22) is connected to the first oil circuit (201); A third oil circuit (203) is connected between the first oil circuit (201) and the second oil circuit (202), and a hydraulically controlled reversing valve (23) is connected in series in the third oil circuit (203); the external oil control port is connected to the hydraulic control port of the hydraulically controlled reversing valve (23), so that when oil enters the external oil control port, the third oil circuit (203) is connected, and then the first oil circuit (201) and the second oil circuit (202) are connected.

2. The hydraulic motor passive operation valve block device according to claim 1, characterized in that: It also includes a brake (4) for braking the hydraulic motor (1), and a brake oil circuit (204) is provided in the valve block (2), and the brake oil circuit (204) is connected to the brake oil port (Br) of the brake (4); when oil flows into the oil port I (A), the oil port II (B) or the external control oil port, the brake oil circuit (204) is connected, so that oil flows into the brake oil port (Br), and the brake (4) is released.

3. The hydraulic motor passive operation valve block device according to claim 1, characterized in that: A fourth oil circuit (205) is connected between the first oil circuit (201) and the second oil circuit (202); a one-way valve I (24) and a one-way valve II (25) having opposite conduction directions are connected in series to the fourth oil circuit (205); and a hydraulic control port of the hydraulically controlled reversing valve (23) is connected to the oil circuit between the one-way valve I (24) and the one-way valve II (25).

4. The hydraulic motor passive operation valve block device according to claim 2, characterized in that: The brake oil circuit (204) is connected in sequence to a shuttle valve I (26), a shuttle valve II (27) and a sequence valve (28); one inlet of the shuttle valve I (26) is connected to the first oil circuit (201), the other inlet of the shuttle valve I (26) is connected to the second oil circuit (202), and the working port of the shuttle valve I (26) is connected to an inlet of the shuttle valve II (27); the other inlet of the shuttle valve II (27) is connected to the external control oil port, the working port of the shuttle valve II (27) is connected to the sequence valve (28), and the sequence valve (28) is connected to the brake oil port (Br).

5. The hydraulic motor passive operation valve block device according to claim 4, characterized in that: One of the external oil control ports is connected to the hydraulic control port of the hydraulic control reversing valve (23), and the other is connected to an inlet of the shuttle valve II (27). The external oil control port includes a first external oil control port (X1) and a second external oil control port (X2) that are connected to each other.

6. The hydraulic motor passive operation valve block device according to claim 3, characterized in that: A throttle valve (29) is connected in series to the third oil circuit (203).

7. The hydraulic motor passive operation valve block device according to claim 4, characterized in that: A pressure reducing valve (30) is connected in series between the working port of the shuttle valve II (27) and the sequence valve (28).

8. The hydraulic motor passive operation valve block device according to claim 1, characterized in that: The electromagnetic reversing valve (3) has an oil inlet (P) and an oil return port (T). When the electromagnetic reversing valve (3) is in a middle position, the oil passage port I (A) and the oil passage port II (B) are both connected to the oil return port (T); when the electromagnetic reversing valve (3) is in a left position, the oil inlet (P) is connected to the oil passage port I (A), and the oil return port (T) is connected to the oil passage port II (B); when the electromagnetic reversing valve (3) is in a right position, the oil inlet (P) is connected to the oil passage port II (B), and the oil return port (T) is connected to the oil passage port I (A).

9. The hydraulic motor passive operation valve block device according to claim 7, characterized in that: The valve block (2) is provided with a brake pressure measuring port (MBr), and the brake pressure measuring port (MBr) is connected between the sequence valve (28) and the brake oil port (Br).

10. The hydraulic motor passive operation valve block device according to claim 7, characterized in that: It also includes an oil drain port (L), and the hydraulic motor (1), the hydraulically controlled reversing valve (23), the pressure reducing valve (30) and the sequence valve (28) are all connected to the oil drain port (L).

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