Valve rod meso-position sensing detection mechanism

Abstract

The utility model relates to the technical field of valve rod meso-position sensing detection, and discloses a valve rod meso-position sensing detection mechanism which comprises a control valve body. The valve rod is mounted on the control valve body; a detection mechanism is arranged on the left side of the control valve body corresponding to the left end of the valve rod; the side of the detection mechanism is connected with the surface of the control valve body through bolts I; the detection mechanism comprises a left shell and a right shell which are arranged left and right; a left cavity is formed in the left shell, and a right cavity is formed in the right shell; the interiors of the left cavity and the right cavity are arranged in a penetrating mode, and the close end faces of the left shell and the right shell are in contact; and a connecting rod is horizontally arranged in the left cavity. The device is wide in structural use range, can be used for valve rods of various specifications and models, is high in use sensitivity, and is provided with the two microswitches, so that the left and right displacement of the valve rod can be accurate to millimeter, and a control system can confirm whether the valve rod is in the middle position or not; and the integrated design facilitates maintenance and replacement by a customer.

Description

Technical Field

[0001] This utility model relates to the field of valve stem mid-position sensing and detection technology, specifically a valve stem mid-position sensing and detection mechanism. Background Technology

[0002] The neutral position of the valve stem not only directly affects the performance of the hydraulic system, but also influences the performance of the hydraulic pump and the hydraulic system when the directional valve switches from the neutral position to the left or right position. Therefore, it is necessary to confirm that the valve stem is in the neutral position when using hydraulic valves.

[0003] Existing testing institutions are usually designed to be controlled by microswitches. On the market, microswitches are mounted on brackets and installed by users themselves. Due to the varying skill levels of users and the need for adjustments for valve stems of different sizes, the sensitivity of the microswitches often fails to meet the requirements.

[0004] Therefore, a valve stem mid-position sensing detection mechanism is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a valve stem mid-position sensing and detection mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a valve stem mid-position sensing and detection mechanism, including a control valve body;

[0007] And the valve stem installed on the control valve body;

[0008] A detection mechanism is provided on the left side of the control valve body, corresponding to the left end of the valve stem.

[0009] The detection mechanism is connected to the surface of the control valve body via a bolt.

[0010] The detection mechanism includes a left housing and a right housing placed side by side;

[0011] The left shell has a left cavity inside, and the right shell has a right cavity inside;

[0012] The left cavity and the right cavity are connected internally, and the left shell and the right shell are in contact at their close end faces;

[0013] A connecting rod is horizontally arranged inside the left cavity, and spring seat one and spring seat two are slidably sleeved on the left and right ends of the connecting rod, respectively;

[0014] An L-shaped plate is fixedly installed on the left end face of the left shell, and an L-shaped plate is fixedly installed on the front face of the right shell. The interior of the left cavity is connected to the inner side of the L-shaped plate, and the interior of the right cavity is connected to the inner side of the L-shaped plate.

[0015] Preferably, both the upper and lower ends of the left and right housings are horizontally perforated with fastening through holes, and the two sets of fastening through holes are correspondingly arranged. The left and right housings are connected by screws passing through the two sets of fastening through holes.

[0016] Preferably, the right end of the connecting rod extends into the right cavity and is fixedly connected to a connector, the left end of the valve stem extends through the control valve body into the right cavity, a threaded hole is provided on the left end face of the valve stem, the surface of the connector is provided with an external thread, and the connector extends into the threaded hole and is threadedly connected to the left end of the valve stem.

[0017] Preferably, both the inner sides of the L-shaped plate one and the inner sides of the L-shaped plate two are connected to microswitches by bolt two. The two microswitches are provided with contacts at their close ends. Both contacts extend into the left cavity and contact the corresponding side of the spring seat one and the side of the spring seat two, respectively.

[0018] Preferably, the left side of the first spring seat is engaged with the inner wall of the left cavity, and the right side of the second spring seat is engaged with the side of the right housing.

[0019] Preferably, the surface of the connecting rod is provided with a sliding ring groove, and the adjacent ends of the first spring seat and the second spring seat are both engaged with the sliding ring groove.

[0020] Preferably, springs are sleeved on the outer sides of spring seat one and spring seat two, and the two ends of the springs are fixedly connected to the surfaces of spring seat one and spring seat two, respectively.

[0021] Preferably, the two microswitches are connected in parallel.

[0022] Compared with the prior art, the beneficial effects of this utility model are: the valve stem mid-position sensing detection mechanism,

[0023] 1) This device has a wide range of applications and can be used with valve stems of various specifications and models;

[0024] 2) It has high sensitivity. Because it is equipped with two microswitches, the displacement of the valve stem in the left and right directions can be accurate to the millimeter, which allows the control system to confirm whether the valve stem is in the neutral position; and the integrated design makes it convenient for customers to maintain and replace. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the testing mechanism structure of this utility model;

[0026] Figure 2 This is a bottom-view perspective view of the overall structure of this utility model;

[0027] Figure 3 This is a bottom-view three-dimensional cross-sectional view of the overall and partial structure of this utility model;

[0028] Figure 4 This is a three-dimensional exploded view of the inner part of the testing mechanism of this utility model;

[0029] Figure 5 This is a three-dimensional sectional view of the internal structure of the left shell of this utility model;

[0030] Figure 6 This is a three-dimensional right-side sectional view of the internal structure of the testing mechanism of this utility model;

[0031] Figure 7 This is a three-dimensional left-side sectional view of the internal structure of the testing mechanism of this utility model.

[0032] In the diagram: 1. Control valve body, 2. Valve stem, 3. Detection mechanism, 31. Left housing, 311. Left cavity, 32. Right housing, 321. Right cavity, 33. L-shaped plate one, 34. L-shaped plate two, 35. Micro switch, 351. Contact, 36. Connecting rod, 361. Connector, 37. Spring seat one, 38. Spring seat two, 39. Spring. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0034] Please see Figures 1-7 This utility model provides a technical solution: a valve stem mid-position sensing and detection mechanism, including a control valve body 1;

[0035] And the valve stem 2 installed on the valve body 1 of the control valve;

[0036] A detection mechanism 3 is provided on the left side of the control valve body 1, corresponding to the left end of the valve stem 2.

[0037] The detection mechanism 3 is connected to the surface of the control valve body 1 by a bolt 1 on one side;

[0038] The testing mechanism 3 includes a left housing 31 and a right housing 32 placed side by side;

[0039] The left shell 31 has a left cavity 311 inside, and the right shell 32 has a right cavity 321 inside;

[0040] The left cavity 311 and the right cavity 321 are internally connected, and the left shell 31 and the right shell 32 are in contact with each other at their close end faces;

[0041] A connecting rod 36 is horizontally arranged inside the left cavity 311, and spring seat 37 and spring seat 38 are respectively slidably sleeved on the left and right ends of the connecting rod 36.

[0042] An L-shaped plate 33 is fixedly installed on the left end face of the left shell 31, and an L-shaped plate 34 is fixedly installed on the front of the right shell 32. The interior of the left cavity 311 is connected to the inner side of the L-shaped plate 33, and the interior of the right cavity 321 is connected to the inner side of the L-shaped plate 34.

[0043] Both the upper and lower ends of the left housing 31 and the right housing 32 are horizontally provided with fastening through holes. The two sets of fastening through holes are provided in a corresponding manner. The left housing 31 and the right housing 32 are connected by a screw passing through the two sets of fastening through holes.

[0044] The right end of the connecting rod 36 extends into the right cavity 321 and is fixedly connected to the connector 361. The left end of the valve stem 2 passes through the control valve body 1 and extends into the right cavity 321. A threaded hole is opened on the left end face of the valve stem 2. An external thread is provided on the surface of the connector 361. The connector 361 extends into the threaded hole and is threadedly connected to the left end of the valve stem 2.

[0045] Microswitches 35 are connected to the inner sides of L-shaped plate 33 and L-shaped plate 34 by bolts 2. The two microswitches 35 are provided with contacts 351 at their close ends. The two contacts 351 extend into the left cavity 311 and contact the corresponding side of spring seat 37 and spring seat 38, respectively. The left side of spring seat 37 is engaged with the inner wall of the left cavity 311, and the right side of spring seat 38 is engaged with the side of the right shell 32. The two microswitches 35 are connected in parallel.

[0046] The connecting rod 36 has a sliding ring groove on its surface. The near ends of spring seat 37 and spring seat 38 are engaged with the sliding ring groove. Springs 39 are sleeved on the outer sides of spring seat 37 and spring seat 38. The two ends of spring 39 are fixedly connected to the surfaces of spring seat 37 and spring seat 38, respectively.

[0047] Furthermore, this embodiment employs a parallel double microswitch 35, which is linked with the valve stem 2. When the valve stem 2 is operated, the microswitch 25 is connected to provide a signal to the electronic control device, thereby determining that the valve stem 2 is not in the middle position.

[0048] When in use, this device has a wide range of applications and can be used with valve stems of various specifications and models. It has high sensitivity and the displacement of valve stem 2 in the left and right directions can be accurate to the millimeter, which allows the control system to confirm whether the valve stem is in the neutral position. Moreover, the integrated design makes it convenient for customers to maintain and replace valve stems.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A valve stem mid-position inductive detection mechanism, comprising a control valve body (1) and a valve stem (2) installed on the control valve body (1); a detection mechanism (3) is arranged on the left side of the control valve body (1) corresponding to the left end position of the valve stem (2); the side of the detection mechanism (3) is connected with the surface of the control valve body (1) through a bolt one; the detection mechanism (3) comprises a left shell (31) and a right shell (32) placed left and right; a left cavity (311) is arranged in the left shell (31), and a right cavity (321) is arranged in the right shell (32); the left cavity (311) and the right cavity (321) are throughly arranged in the interiors thereof, and the left shell (31) and the right shell (32) are in contact with each other at the end faces; a connecting rod (36) is horizontally arranged in the left cavity (311), spring seats one (37) and two (38) are respectively slidably sleeved on the left and right ends of the connecting rod (36); an L-shaped plate one (33) is fixedly arranged on the left end face of the left shell (31), an L-shaped plate two (34) is fixedly arranged on the front face of the right shell (32), the left cavity (311) is throughly arranged with the inner side of the L-shaped plate one (33), and the right cavity (321) is throughly arranged with the inner side of the L-shaped plate two (34). Fastening through holes are horizontally and throughly formed in the upper and lower ends of the left shell (31) and the right shell (32), and two groups of fastening through holes are correspondingly arranged; the left shell (31) and the right shell (32) are connected and arranged through the fastening through holes by a screw rod. characterized in that The right end of the connecting rod (36) extends into the right cavity (321) and is fixedly connected with a connecting head (361), the left end of the valve stem (2) extends into the right cavity (321) through the control valve body (1), a threaded hole is formed in the left end face of the valve stem (2), an external thread is arranged on the surface of the connecting head (361), the connecting head (361) extends into the threaded hole and is threadedly connected with the left end of the valve stem (2). The inner sides of the L-shaped plate one (33) and the L-shaped plate two (34) are connected with micro switches (35) through bolt two, the two micro switches (35) are provided with contact points (351) at the close ends thereof, and the two contact points (351) extend into the left cavity (311) and are respectively in contact with the side faces of the corresponding spring seats one (37) and two (38). The left side face of the spring seat one (37) is in clamping connection with the inner wall of the left cavity (311), and the right side face of the spring seat two (38) is in clamping connection with the side face of the right shell (32). A sliding ring groove is formed in the surface of the connecting rod (36), and the close ends of the spring seats one (37) and two (38) are in clamping connection with the sliding ring groove. The spring seats one (37) and two (38) are sleeved with springs (39) outside, and the two ends of the spring (39) are fixedly connected with the surfaces of the spring seats one (37) and two (38). The two micro switches (35) are connected in parallel. ​ 2. The valve stem mid-position inductive detection mechanism according to claim 1, characterized in that: ​ 3. A valve stem mid-position inductive sensing mechanism as defined in claim 2, wherein: ​ 4. The valve stem mid-position inductive sensing mechanism of claim 3, wherein: ​ 5. A stem center inductive sensing mechanism as defined in claim 4, wherein: ​ 6. A stem center inductive sensing mechanism as defined in claim 5, wherein: ​ 7. A stem center inductive sensing mechanism as defined in claim 6, wherein: ​ 8. The valve stem mid-position inductive sensing mechanism of claim 4, wherein: ​

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