Pressure-adjustable hydraulic reversing valve

Abstract

The utility model belongs to the technical field of hydraulic reversing valves, and discloses a pressure-adjustable hydraulic reversing valve which comprises a hydraulic reversing valve main valve body, a fixing seat is fixed on the hydraulic reversing valve main valve body, an adjusting assembly is installed on the fixing seat, a locking assembly is installed on the side face of the fixing seat, the adjusting assembly comprises a rotating block, and the rotating block is fixed on the fixing seat. The end face of the rotating block is fixedly connected with a connecting rod, the connecting rod is fixedly connected with a first-stage gear, the first-stage gear is in meshed connection with a second-stage gear, the second-stage gear is fixedly connected with a transmission rod, the bottom end of the transmission rod is fixedly connected with an adjusting reversing valve plate, and the adjusting reversing valve plate is installed in the hydraulic reversing valve main valve body. The first-stage gear and the second-stage gear are both arranged in the fixing base, the locking assembly fixes the first-stage gear, so that the first-stage gear cannot rotate due to vibration, it is guaranteed that the adjusting reversing valve block cannot deflect by angle when not adjusted, and the stability of the adjusting reversing valve block is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of reversing valves, in particular to a pressure-adjustable hydraulic reversing valve. Background Art

[0002] Hydraulic reversing valves are divided into two-way, three-way, four-way and five-way valves according to the number of passages controlled by the reversing valve. The absolute movement of the valve core and the valve body is used to open, close or change the direction of oil flow, thereby enabling the hydraulic actuator and its drive mechanism to start, end or change the direction of movement.

[0003] Chinese patent application number 202320364655.1 discloses a pressure-controllable hydraulic reversing valve, which can adjust the angle of the reversing valve plate, and the setting of the limit bearing seat can reduce the blocking feeling of sliding during adjustment, so that the device does not require excessive torque when adjusting the valve plate angle, and the effect is good during use. However, the pressure-controllable hydraulic reversing valve has the following shortcomings: affected by the environment in which the hydraulic reversing valve is used, it is subject to certain vibrations, and the structure using gear transmission will have a certain rotation under the action of vibration, affecting the angle of the regulating valve plate. Utility Model Content

[0004] In order to solve the problems raised in the above background technology, the utility model provides a pressure-adjustable hydraulic reversing valve, which has the advantages of locking the regulating reversing valve plate to prevent it from being affected by vibration.

[0005] To achieve the above object, the utility model provides the following technical solutions: a pressure-adjustable hydraulic reversing valve, comprising a hydraulic reversing valve main valve body, a fixing seat fixed on the hydraulic reversing valve main valve body, an adjusting component installed on the fixing seat, and a locking component installed on the side of the fixing seat;

[0006] The adjusting assembly includes a rotary block, the end face of the rotary block is fixedly connected to a connecting rod, the connecting rod is fixedly connected to a primary gear, the primary gear is meshingly connected to a secondary gear, the secondary gear is fixedly connected to a transmission rod, the bottom end of the transmission rod is fixedly connected to an adjusting reversing valve plate, and the adjusting reversing valve plate is installed in the main valve body of the hydraulic reversing valve.

[0007] Preferably, the locking assembly includes a fixed shell, a movable plate is provided in the fixed shell, one side of the movable plate is fixedly connected to an extension rod, the end of the extension rod is fixedly connected to a locking plate, the locking plate extends into the tooth gap of the primary gear, the side of the movable plate away from the extension rod is fixedly connected to a movable rod, a spring is provided on the movable rod, and the end of the movable rod away from the movable plate passes through the fixed shell and is connected to a pulling block.

[0008] Preferably, the outer surfaces of the rotating block and the pulling block are both provided with anti-slip grooves.

[0009] Preferably, one end of the connecting rod away from the rotating block is connected to the inner wall of the fixing seat through a bearing, and one end of the transmission rod away from the regulating reversing valve plate is connected to the inner wall of the fixing seat through a bearing.

[0010] Preferably, the first-stage gear and the second-stage gear are both arranged in a fixing seat.

[0011] Preferably, a sealing ring seat is installed in the main valve body of the hydraulic reversing valve at a position corresponding to the regulating reversing valve plate, the regulating reversing valve plate is located inside the sealing ring seat, and the transmission rod passes through the sealing ring seat to connect with the regulating reversing valve plate.

[0012] Preferably, the fixing seat, the adjusting assembly, the locking assembly and the sealing ring seat are symmetrically distributed on the main valve body of the hydraulic reversing valve.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model fixes the primary gear by setting a locking assembly so that it will not rotate due to vibration, ensuring that the regulating reversing valve plate will not deflect at an angle when not adjusted, which is conducive to ensuring the stability of the regulating reversing valve plate;

[0015] 2. The utility model sets a primary gear and a secondary gear, and transmits the power through the gears on the plane. The structure is simpler, the cost is lower, and it is easy to repair and replace. It is beneficial for maintenance personnel to repair the hydraulic reversing valve and convenient for the use of the hydraulic reversing valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the adjustment component of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the locking assembly of the utility model;

[0019] Figure 4 This is a schematic diagram of the sealing ring seat structure of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the primary gear and the locking plate of the utility model.

[0021] In the figure: 1. Main valve body of hydraulic reversing valve; 2. Fixed seat;

[0022] 3. Adjustment assembly; 31. Rotary block; 32. Connecting rod; 33. Primary gear; 34. Secondary gear; 35. Transmission rod; 36. Adjustment reversing valve plate;

[0023] 4. Locking assembly; 41. Fixed shell; 42. Movable plate; 43. Extending rod; 44. Locking piece; 45. Movable rod; 46. Spring; 47. Pulling block;

[0024] 5. Sealing ring seat. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figures 1 to 5 As shown, the utility model provides a pressure-adjustable hydraulic reversing valve, including a hydraulic reversing valve main valve body 1, a fixing seat 2 is fixed on the hydraulic reversing valve main valve body 1, and the fixing seat 2 is fixed on the hydraulic reversing valve main valve body 1, and can be connected by bolts to install an adjusting component 3, and an adjusting component 3 is installed on the fixing seat 2, and the adjusting component 3 can adjust the angle of the adjusting reversing valve plate 36, and a locking component 4 is installed on the side of the fixing seat 2 according to the step pressure size, and the locking component 4 can clamp the first-stage gear 33, and then fix the second-stage gear 34 and the adjusting reversing valve plate 36, so that the adjusting reversing valve plate 36 will not be affected by vibration and cause angle deviation;

[0027] The adjusting assembly 3 comprises a rotary block 31, the end face of the rotary block 31 is fixedly connected with a connecting rod 32, a through hole is provided on the fixing seat 2 for the connecting rod 32 to pass through, the connecting rod 32 is fixedly connected with a primary gear 33, the primary gear 33 is meshingly connected with a secondary gear 34, the diameter of the primary gear 33 is smaller than the diameter of the secondary gear 34, so that the adjustment precision is better, the secondary gear 34 is fixedly connected with a transmission rod 35, a through hole corresponding to the transmission rod 35 is provided on the main valve body 1 of the hydraulic reversing valve, so that the transmission rod 35 can pass through, and a sealing ring should be arranged in the through hole to ensure the sealing performance, the bottom end of the transmission rod 35 is fixedly connected with an adjusting reversing valve disc 36, and the adjusting reversing valve disc 36 is installed in the main valve body 1 of the hydraulic reversing valve.

[0028] Specifically, the locking assembly 4 includes a fixed shell 41, in which a movable plate 42 is arranged, and one side of the movable plate 42 is fixedly connected to a protruding rod 43, and a through hole matching the protruding rod 43 is opened on the fixed seat 2, so that the protruding rod 43 can pass through and limit the rotation of the protruding rod 43, and a locking plate 44 is fixedly connected to the end of the protruding rod 43. The structural size of the locking plate 44 corresponds to the tooth gap of the primary gear 33, so as to ensure that the end of the locking plate 44 can extend into and clamp the primary gear 33, and the locking plate 44 extends into the tooth gap of the primary gear 33, and a movable rod 45 is fixedly connected to the side of the movable plate 42 away from the protruding rod 43, and a hole for the movable rod 45 to pass through is opened on the fixed shell 41, and a spring 46 is sleeved on the movable rod 45, and the end of the movable rod 45 away from the movable plate 42 passes through the fixed shell 41 and is connected to a pulling block 47.

[0029] Furthermore, the outer surfaces of the rotating block 31 and the pulling block 47 are both provided with anti-skid patterns, which can increase the anti-skid effect and facilitate the rotating of the rotating block 31 and the pulling of the pulling block 47 .

[0030] Furthermore, one end of the connecting rod 32 away from the rotating block 31 is connected to the inner wall of the fixing seat 2 through a bearing, and one end of the transmission rod 35 away from the regulating reversing valve plate 36 is connected to the inner wall of the fixing seat 2 through a bearing.

[0031] It is worth noting that both the first-stage gear 33 and the second-stage gear 34 are disposed in the fixing seat 2 .

[0032] It is worth noting that a sealing ring seat 5 is installed at a position corresponding to the regulating reversing valve plate 36 in the main valve body 1 of the hydraulic reversing valve, the regulating reversing valve plate 36 is located on the inner side of the sealing ring seat 5, and the transmission rod passes through the sealing ring seat 5 to connect the regulating reversing valve plate 36.

[0033] It is worth mentioning that the fixing seat 2 , the adjusting assembly 3 , the locking assembly 4 , and the sealing ring seat 5 are all symmetrically distributed on the main valve body 1 of the hydraulic reversing valve.

[0034] Working principle and process: When the pressure needs to be adjusted, the pulling block 47 of the locking assembly 4 is pulled, and the movable rod 45 drives the movable plate 42 to move. At this time, the spring 46 is compressed by force, and then the extending rod 43 drives the locking plate 44 to move, so that the locking plate 44 can leave the tooth gap of the primary gear 33, and then the rotating block 31 of the adjusting assembly 3 is rotated, and the connecting rod 32 drives the primary gear 33 to rotate, and then the secondary gear 34 meshing with the primary gear 33 rotates. After the transmission of the transmission rod 35, the angle of the adjusting reversing valve plate 36 in the sealing ring seat 5 changes, and the pressure can be adjusted. Release the pulling block 47 of the locking assembly 4. 7. The spring 46 stretches, pressing the movable plate 42 to move, that is, driving the pulling block 47, the movable rod 45, the extending rod 43, that is, the locking piece 44 to move, and the end of the locking piece 44 re-extends into the tooth gap of the primary gear 33 to form a locking effect, or the end of the locking piece 44 is close to the teeth of the primary gear 33. When the primary gear 33 rotates, the locking piece 44 will extend into the tooth gap of the primary gear 33 under the thrust of the spring 46, thereby forming the locking of the primary gear 33, that is, fixing the position of the reversing valve plate 36 so that it will not be vibrated and have an angle deviation, which is beneficial to the use of the hydraulic reversing valve.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Although embodiments of the utility model have been shown and described, it is understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A pressure-adjustable hydraulic reversing valve, comprising a hydraulic reversing valve main valve body (1), characterized in that: A fixing seat (2) is fixed on the main valve body (1) of the hydraulic reversing valve, an adjusting component (3) is installed on the fixing seat (2), and a locking component (4) is installed on the side of the fixing seat (2); The regulating assembly (3) comprises a rotary block (31), the end surface of the rotary block (31) being fixedly connected to a connecting rod (32), the connecting rod (32) being fixedly connected to a primary gear (33), the primary gear (33) being meshingly connected to a secondary gear (34), the secondary gear (34) being fixedly connected to a transmission rod (35), the bottom end of the transmission rod (35) being fixedly connected to an regulating reversing valve disc (36), the regulating reversing valve disc (36) being installed in a main valve body (1) of a hydraulic reversing valve.

2. A pressure-adjustable hydraulic reversing valve according to claim 1, characterized in that: The locking assembly (4) comprises a fixed shell (41), a movable plate (42) is arranged in the fixed shell (41), one side of the movable plate (42) is fixedly connected to a protruding rod (43), the end of the protruding rod (43) is fixedly connected to a locking plate (44), the locking plate (44) extends into the tooth gap of the primary gear (33), a side of the movable plate (42) away from the protruding rod (43) is fixedly connected to a movable rod (45), a spring (46) is sleeved on the movable rod (45), and one end of the movable rod (45) away from the movable plate (42) passes through the fixed shell (41) and is connected to a pulling block (47).

3. A pressure-adjustable hydraulic reversing valve according to claim 2, characterized in that: The outer surfaces of the rotating block (31) and the pulling block (47) are both provided with anti-slip grooves.

4. The pressure-adjustable hydraulic reversing valve according to claim 1, characterized in that: One end of the connecting rod (32) away from the rotating block (31) is connected to the inner wall of the fixing seat (2) via a bearing, and one end of the transmission rod (35) away from the regulating reversing valve plate (36) is connected to the inner wall of the fixing seat (2) via a bearing.

5. The pressure-adjustable hydraulic reversing valve according to claim 1, characterized in that: The first-stage gear (33) and the second-stage gear (34) are both arranged in the fixing seat (2).

6. The pressure-adjustable hydraulic reversing valve according to claim 1, characterized in that: A sealing ring seat (5) is installed in the main valve body (1) of the hydraulic reversing valve at a position corresponding to the regulating reversing valve plate (36); the regulating reversing valve plate (36) is located inside the sealing ring seat (5); and the transmission rod (35) passes through the sealing ring seat (5) and is connected to the regulating reversing valve plate (36).

7. The pressure-adjustable hydraulic reversing valve according to claim 6, characterized in that: The fixing seat (2), the adjusting assembly (3), the locking assembly (4), and the sealing ring seat (5) are all symmetrically distributed on the main valve body (1) of the hydraulic reversing valve.

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