Electric rotating device for piston system of piston type pressure gauge

Abstract

The utility model discloses an electric rotating device for a piston system of a piston type pressure gauge, which comprises a large belt wheel base and a synchronous motor, a deep groove ball bearing B is sleeved on the large belt wheel base, a large belt wheel is arranged on an outer ring of the deep groove ball bearing B, the large belt wheel is connected with a small belt wheel through a belt, and the small belt wheel is fixedly connected on an output shaft of the synchronous motor. The outer wall of the lower transmission cylinder is fixedly connected with an upper transmission cylinder, the top end of the upper transmission cylinder is in contact connection with a piston rod assembly through a friction plate, the outer wall of the piston rod assembly is sleeved with a piston system assembly, the piston system assembly is arranged in the upper transmission cylinder, the lower transmission cylinder and the large belt wheel base, and the piston system assembly is in contact with the inner wall of the lower transmission cylinder; a pressure input port is formed in the side face of the large belt wheel base. The electric rotating device for the piston system of the piston type pressure gauge solves the problems of inaccurate quantity value transmission and fracture of the piston rod which are possibly caused by manually rotating the piston in the prior art.

Description

Technical Field

[0001] The utility model belongs to the technical field of pressure measuring devices, and in particular relates to an electric rotating device for a piston system of a piston type pressure gauge. Background Art

[0002] Piston pressure gauges are essential measuring instruments used by metrology and testing institutes at all levels in my country and by pressure measurement departments of industrial enterprises to establish pressure standards. They are used for value transfer and can calibrate pressure instruments such as digital pressure gauges, precision pressure gauges, standard pressure gauges, pressure transmitters, and pressure sensors. During operation, the piston of a piston pressure gauge must rotate steadily and continuously at a speed of approximately 30 to 60 r / min. This reduces friction between the piston rod and the cylinder, allowing for more flexible rotation and improving the sensitivity and service life of the piston pressure gauge. This rotational motion not only helps maintain the piston pressure gauge's precise measurement capabilities but also extends its service life, ensuring the accuracy and reliability of measurement results.

[0003] Usually the piston is rotated manually, that is, the operator rotates the piston clockwise with both hands in a hugging manner. After the piston rotates, the pressure inside the piston system is increased, causing the piston to rise and float. At this time, the piston is not subject to external force and rotates freely by inertia.

[0004] The current problems are: first, the operator cannot guarantee that the piston speed is (30~60) r / min each time he rotates the piston manually; second, when the operator manually rotates the piston, the force applied to the piston rod cannot guarantee its uniformity and coaxiality, resulting in unstable rotation of the piston, and in severe cases, the piston rod may break. At the same time, the unstable rotation of the piston also has a certain impact on the value transmission of the piston pressure gauge, and the accuracy and reliability of the measurement results cannot be guaranteed. Utility Model Content

[0005] The utility model aims to provide an electric rotating device for a piston system of a piston pressure gauge, which solves the problem that the existing manual rotation of the piston may cause inaccurate value transmission and breakage of the piston rod.

[0006] The technical solution adopted by the present utility model is an electric rotating device of a piston system of a piston pressure gauge, comprising a large pulley base and a synchronous motor, a deep groove ball bearing B is sleeved on the large pulley base, a large pulley is mounted on the outer ring of the deep groove ball bearing B, the large pulley is connected to a small pulley through a belt, the small pulley is fixedly connected to the output shaft of the synchronous motor, a lower transmission cylinder is fixedly connected to the large pulley, an upper transmission cylinder is fixedly connected to the outer wall of the lower transmission cylinder, the top end of the upper transmission cylinder is contacted and connected with a piston rod assembly through a friction plate, a piston system assembly is sleeved on the outer wall of the piston rod assembly, the piston system assembly is arranged in the upper transmission cylinder, the lower transmission cylinder and the large pulley base, the piston system assembly is in contact with the inner wall of the lower transmission cylinder, and a pressure input port is provided on the side of the large pulley base.

[0007] The utility model is also characterized in that:

[0008] The deep groove ball bearing B is fixedly connected to the large pulley base through a bearing inner ring pressure ring, and the deep groove ball bearing B is fixedly connected to the large pulley through a bearing outer ring pressure ring.

[0009] The pressure input port is opened to the central hydraulic channel of the large pulley base, and the central hydraulic channel of the large pulley base corresponds to the hydraulic channel of the piston system component.

[0010] The diameter of the large pulley is twice the diameter of the small pulley.

[0011] The piston rod assembly includes a piston rod fixing seat, the cross-section of the piston rod fixing seat is "concave", a piston rod is arranged in the piston rod fixing seat, the piston rod is inserted into the piston system assembly, a small piston tray is provided on the outer wall of the piston rod fixing seat, and the small piston tray is connected to the notch at the top of the piston rod fixing seat through a small tray tightening screw.

[0012] The piston system assembly includes a piston cylinder base. The outer wall of the piston cylinder base is sleeved with an A-type elastic retaining ring and two deep groove ball bearings A arranged side by side. The A-type elastic retaining ring is arranged between the two deep groove ball bearings A. The outer walls of the two deep groove ball bearings A are in contact with the inner wall of the lower transmission cylinder. The cross-section of the piston cylinder base is "concave". A piston cylinder is provided at the notch at the top of the piston cylinder base. The outer walls of the piston cylinder and the piston cylinder base are both sleeved with a piston cylinder clamping sleeve. The inner wall of the top of the piston cylinder clamping sleeve is provided with a limit bearing. The limit bearing is sleeved on the outer wall of the piston rod fixing seat. The limit bearing is fixed to the piston cylinder clamping sleeve through a limit bearing pressure ring.

[0013] The cross section of the large pulley base is concave, the piston cylinder base is inserted into the groove notch of the large pulley base, and a sealing ring is provided between the groove notch of the large pulley base and the piston cylinder base.

[0014] The piston rod is inserted into the piston cylinder, and the limit bearing and deep groove ball bearing A are coaxially arranged with the upper transmission cylinder, the lower transmission cylinder, the large pulley base, the large pulley and the deep groove ball bearing B.

[0015] The main shaft of the synchronous motor is fixed to the small pulley by means of set screws.

[0016] The beneficial effects of the utility model are:

[0017] This utility model provides a piston pressure gauge with an electrically powered piston rotation device, effectively preventing the risk of piston rod breakage caused by manual rotation and the inaccurate output value caused by the left-right piston swing. In this structure, the drive cylinder is split into two parts, facilitating installation and removal of the piston system. Therefore, a piston pressure gauge equipped with this device improves the safety of the piston system and the accuracy of the output value, extending the service life of the piston pressure gauge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of the electric rotating device of the piston system of the piston pressure gauge of the utility model;

[0019] Figure 2 This is a top view of the electric rotating device of the piston system of the piston pressure gauge of the utility model;

[0020] Figure 3 This is a structural diagram of the piston rod assembly of the utility model;

[0021] Figure 4 This is a structural diagram of the piston system components of the utility model.

[0022] In the figure, 1. Piston rod assembly, 11. Piston small tray, 12. Small tray tightening screw, 13. Piston rod fixing seat, 14. Piston rod, 2. Piston system assembly, 21. Limit bearing pressure ring, 22. Limit bearing, 23. Piston cylinder tightening sleeve, 24. Piston cylinder, 25. Piston cylinder base, 26. Deep groove ball bearing A, 27. Type A elastic retaining ring, 31. Friction plate, 32. Upper transmission cylinder, 33. Lower transmission cylinder, 34. Large pulley base, 35. Large pulley, 36. Bearing inner ring pressure ring, 37. Deep groove ball bearing B, 38. Bearing outer ring pressure ring, 39. Pressure input port, 41. Synchronous motor, 42. Belt, 43. Small pulley. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0024] The utility model provides an electric rotating device for the piston system of a piston pressure gauge, such as Figure 1As shown, it includes a large pulley base 34 and a synchronous motor 41. A deep groove ball bearing B37 is sleeved on the large pulley base 34. A large pulley 35 is installed on the outer ring of the deep groove ball bearing B37. The large pulley 35 is connected to a small pulley 43 through a belt 42. The small pulley 43 is fixed to the output shaft of the synchronous motor 41. The fixing hole of the synchronous motor 41 is a long slot hole. The large pulley 35 is fixed with a lower transmission cylinder 33. The outer wall of the lower transmission cylinder 33 is fixed with an upper transmission cylinder 32. The transmission cylinder is split into two parts, which is convenient for the installation and disassembly of the piston system. The top of the upper transmission cylinder 32 is connected to the piston rod assembly 1 through a friction plate 31. The friction plate 31 is inlaid with Embedded in the top of the upper transmission cylinder 32, the outer wall of the piston rod assembly 1 is provided with a piston system assembly 2, which is arranged in the upper transmission cylinder 32, the lower transmission cylinder 33 and the large pulley base 34. The piston system assembly 2 contacts the inner wall of the lower transmission cylinder 33, and a pressure input port 39 is provided on the side of the large pulley base 34. The deep groove ball bearing B37 is fixed to the large pulley base 34 through the bearing inner ring pressure ring 36, and the deep groove ball bearing B37 is fixed to the large pulley 35 through the bearing outer ring pressure ring 38. The pressure input port 39 is opened to the central hydraulic channel of the large pulley base 34, and the central hydraulic channel of the large pulley base 34 corresponds to the hydraulic channel of the piston system assembly 2. Figure 2 As shown, the diameter of the large pulley 35 is twice the diameter of the small pulley 43. Figure 3 As shown, the piston rod assembly 1 includes a piston rod fixing seat 13, the cross section of the piston rod fixing seat 13 is "concave", a piston rod 14 is arranged in the piston rod fixing seat 13, and the piston rod 14 is inserted into the piston system assembly 2. The outer wall of the piston rod fixing seat 13 is provided with a piston small tray 11, and the notch at the top of the piston rod fixing seat 13 is connected to the piston small tray 11 through the small tray pressing screw 12. Figure 4As shown, the piston system component 2 includes a piston cylinder base 25, the outer wall of the piston cylinder base 25 is provided with an A-type elastic retaining ring 27 and two deep groove ball bearings A26 arranged side by side, the A-type elastic retaining ring 27 is arranged between the two deep groove ball bearings A26, the outer walls of the two deep groove ball bearings A26 are in contact with the inner wall of the lower transmission cylinder 33, the cross-section of the piston cylinder base 25 is "concave", the piston cylinder 24 is provided at the notch at the top of the piston cylinder base 25, the outer walls of the piston cylinder 24 and the piston cylinder base 25 are both provided with a piston cylinder clamping sleeve 23, the inner wall of the top of the piston cylinder clamping sleeve 23 is provided with a limit bearing 22, the limit bearing 22 is sleeved on the outer wall of the piston rod fixing seat 13, and the limit bearing 22 is limited by the limit shaft The pressure ring 21 is fixedly connected to the piston cylinder compression sleeve 23; the cross-section of the large pulley base 34 is "concave", the upper end of the large pulley base 34 is an M20*1.5 internal thread, the piston cylinder base 25 is inserted into the groove notch of the large pulley base 34, and a sealing ring is provided between the groove notch of the large pulley base 34 and the piston cylinder base 25 for easy sealing; the piston rod 14 is inserted into the piston cylinder 24, and the limit bearing 22 and the deep groove ball bearing A26 are coaxially arranged with the upper transmission cylinder 32, the lower transmission cylinder 33, the large pulley base 34, the large pulley 35 and the deep groove ball bearing B37, ensuring that the transmission cylinder can rotate smoothly; the main shaft of the synchronous motor 41 and the small pulley 43 are fixed by a set screw.

[0025] The electric rotation device of the piston system of the piston pressure gauge provided by the utility model has the following working principle: the pressure inside the piston system is increased through the pressure input port 39, so that the piston rod assembly 1 rises and is in a floating state, and the piston small tray 11 and the friction plate 31 are separated. At this time, the piston is not subject to external force and rotates freely by inertia. At this time, the standard pressure is reached in the pipeline system.

[0026] Example 1

[0027] The electric rotating device of the piston system of the piston pressure gauge proposed in this embodiment is as follows: Figure 1 As shown, it includes a large pulley base 34 and a synchronous motor 41. A deep groove ball bearing B37 is provided on the large pulley base 34. A large pulley 35 is installed on the outer ring of the deep groove ball bearing B37. The large pulley 35 is connected to a small pulley 43 through a belt 42. The small pulley 43 is fixed to the output shaft of the synchronous motor 41. The lower transmission cylinder 33 is fixed to the large pulley 35. The outer wall of the lower transmission cylinder 33 is fixed to the upper transmission cylinder 32. The top of the upper transmission cylinder 32 is connected to the piston rod assembly 1 through the friction plate 31. The outer wall of the piston rod assembly 1 is provided with a piston system assembly 2. The piston system assembly 2 is arranged in the upper transmission cylinder 32, the lower transmission cylinder 33 and the large pulley base 34. The piston system assembly 2 is in contact with the inner wall of the lower transmission cylinder 33. A pressure input port 39 is provided on the side of the large pulley base 34.

[0028] Example 2

[0029] The electric rotating device of the piston system of the piston pressure gauge proposed in this embodiment is as follows: Figure 1 As shown, it includes a large pulley base 34 and a synchronous motor 41. A deep groove ball bearing B37 is provided on the large pulley base 34. A large pulley 35 is installed on the outer ring of the deep groove ball bearing B37. The large pulley 35 is connected to a small pulley 43 through a belt 42. The small pulley 43 is fixed to the output shaft of the synchronous motor 41. The large pulley 35 is fixed to a lower transmission cylinder 33. The outer wall of the lower transmission cylinder 33 is fixed to an upper transmission cylinder 32. The top of the upper transmission cylinder 32 is in contact with the friction plate 31. The piston rod assembly 1, the outer wall of the piston rod assembly 1 is provided with a piston system assembly 2, the piston system assembly 2 is arranged in the upper transmission cylinder 32, the lower transmission cylinder 33 and the large pulley base 34, the piston system assembly 2 is in contact with the inner wall of the lower transmission cylinder 33, and a pressure input port 39 is opened on the side of the large pulley base 34; the deep groove ball bearing B37 is fixedly connected to the large pulley base 34 through the bearing inner ring pressure ring 36, and the deep groove ball bearing B37 is fixedly connected to the large pulley 35 through the bearing outer ring pressure ring 38.

[0030] Example 3

[0031] The electric rotating device of the piston system of the piston pressure gauge proposed in this embodiment is as follows: Figure 1 As shown, it includes a large pulley base 34 and a synchronous motor 41. The large pulley base 34 is provided with a deep groove ball bearing B37. A large pulley 35 is installed on the outer ring of the deep groove ball bearing B37. The large pulley 35 is connected to a small pulley 43 through a belt 42. The small pulley 43 is fixed to the output shaft of the synchronous motor 41. The large pulley 35 is fixed with a lower transmission cylinder 33. The outer wall of the lower transmission cylinder 33 is fixed with an upper transmission cylinder 32. The top of the upper transmission cylinder 32 is in contact with a piston rod assembly 1 through a friction plate 31. The outer wall of the piston rod assembly 1 is provided with a piston system assembly 2 The piston system component 2 is arranged in the upper transmission cylinder 32, the lower transmission cylinder 33 and the large pulley base 34. The piston system component 2 contacts the inner wall of the lower transmission cylinder 33. A pressure input port 39 is opened on the side of the large pulley base 34; the deep groove ball bearing B37 is fixedly connected to the large pulley base 34 through the bearing inner ring pressure ring 36, and the deep groove ball bearing B37 is fixedly connected to the large pulley 35 through the bearing outer ring pressure ring 38; the pressure input port 39 is opened to the central hydraulic channel of the large pulley base 34, and the central hydraulic channel of the large pulley base 34 corresponds to the hydraulic channel of the piston system component 2.

[0032] Example 4

[0033] The electric rotating device of the piston system of the piston pressure gauge proposed in this embodiment is as follows: Figure 1As shown, it includes a large pulley base 34 and a synchronous motor 41. A deep groove ball bearing B37 is sleeved on the large pulley base 34. A large pulley 35 is installed on the outer ring of the deep groove ball bearing B37. The large pulley 35 is connected to a small pulley 43 through a belt 42. The small pulley 43 is fixed to the output shaft of the synchronous motor 41. The large pulley 35 is fixed to the lower transmission cylinder 33. The outer wall of the lower transmission cylinder 33 is fixed to the upper transmission cylinder 32. The top of the upper transmission cylinder 32 is in contact with the piston rod assembly 1 through the friction plate 31. The outer wall of the piston rod assembly 1 is sleeved with a piston system assembly 2. The piston system assembly 2 is arranged in the upper transmission cylinder 32, the lower transmission cylinder 33 and the large pulley base 34. The piston system assembly 2 contacts the inner wall of the lower transmission cylinder 33. A pressure input port 39 is opened on the side of the large pulley base 34. The deep groove ball bearing B37 is fixedly connected to the large pulley base 34 through the bearing inner ring pressure ring 36. The deep groove ball bearing B37 is fixedly connected to the large pulley 35 through the bearing outer ring pressure ring 38. The pressure input port 39 is opened to the central hydraulic channel of the large pulley base 34. The central hydraulic channel of the large pulley base 34 corresponds to the hydraulic channel of the piston system assembly 2. Figure 2 As shown, the diameter of the large pulley 35 is twice the diameter of the small pulley 43; Figure 3 As shown, the piston rod assembly 1 includes a piston rod fixing seat 13, the cross-section of the piston rod fixing seat 13 is "concave", a piston rod 14 is arranged in the piston rod fixing seat 13, the piston rod 14 is inserted into the piston system assembly 2, and a piston small tray 11 is provided on the outer wall of the piston rod fixing seat 13. The piston small tray 11 is connected to the notch at the top of the piston rod fixing seat 13 through a small tray tightening screw 12.

[0034] Example 5

[0035] The electric rotating device of the piston system of the piston pressure gauge proposed in this embodiment is as follows: Figure 1 As shown, it includes a large pulley base 34 and a synchronous motor 41. The large pulley base 34 is provided with a deep groove ball bearing B37. A large pulley 35 is installed on the outer ring of the deep groove ball bearing B37. The large pulley 35 is connected to a small pulley 43 through a belt 42. The small pulley 43 is fixed to the output shaft of the synchronous motor 41. The large pulley 35 is fixed with a lower transmission cylinder 33. The outer wall of the lower transmission cylinder 33 is fixed with an upper transmission cylinder 32. The top of the upper transmission cylinder 32 is in contact with a piston rod assembly 1 through a friction plate 31. The outer wall of the piston rod assembly 1 is provided with a piston system assembly 2 The piston system assembly 2 is located inside the upper transmission cylinder 32, the lower transmission cylinder 33, and the large pulley base 34. The piston system assembly 2 contacts the inner wall of the lower transmission cylinder 33. A pressure input port 39 is provided on the side of the large pulley base 34. The deep groove ball bearing B37 is fixed to the large pulley base 34 via the bearing inner ring pressure ring 36. The deep groove ball bearing B37 is fixed to the large pulley base 34 via the bearing outer ring pressure ring 38. The pressure input port 39 is connected to the central hydraulic channel of the large pulley base 34. The central hydraulic channel of the large pulley base 34 corresponds to the hydraulic channel of the piston system assembly 2. Figure 2As shown, the diameter of the large pulley 35 is twice the diameter of the small pulley 43. Figure 3 As shown, the piston rod assembly 1 includes a piston rod fixing seat 13, the cross section of the piston rod fixing seat 13 is "concave", a piston rod 14 is arranged in the piston rod fixing seat 13, and the piston rod 14 is inserted into the piston system assembly 2. The outer wall of the piston rod fixing seat 13 is provided with a piston small tray 11, and the notch at the top of the piston rod fixing seat 13 is connected to the piston small tray 11 through the small tray pressing screw 12. Figure 4 As shown, the piston system assembly 2 includes a piston cylinder base 25. The outer wall of the piston cylinder base 25 is sleeved with an A-type elastic retaining ring 27 and two deep groove ball bearings A26 arranged side by side. The A-type elastic retaining ring 27 is arranged between the two deep groove ball bearings A26. The outer walls of the two deep groove ball bearings A26 are in contact with the inner wall of the lower transmission cylinder 33. The cross-section of the piston cylinder base 25 is "concave". A piston cylinder 24 is provided at the notch at the top of the piston cylinder base 25. The outer walls of the piston cylinder 24 and the piston cylinder base 25 are both sleeved with a piston cylinder clamping sleeve 23. The inner wall of the top of the piston cylinder clamping sleeve 23 is provided with a limit bearing 22. The limit bearing 22 is sleeved on the outer wall of the piston rod fixing seat 13. The limit bearing 22 is fixedly connected to the piston cylinder clamping sleeve 23 through a limit bearing pressure ring 21.

[0036] Example 6

[0037] The electric rotating device of the piston system of the piston pressure gauge proposed in this embodiment is as follows: Figure 1 As shown, it includes a large pulley base 34 and a synchronous motor 41. The large pulley base 34 is provided with a deep groove ball bearing B37. A large pulley 35 is installed on the outer ring of the deep groove ball bearing B37. The large pulley 35 is connected to a small pulley 43 through a belt 42. The small pulley 43 is fixed to the output shaft of the synchronous motor 41. The large pulley 35 is fixed with a lower transmission cylinder 33. The outer wall of the lower transmission cylinder 33 is fixed with an upper transmission cylinder 32. The top of the upper transmission cylinder 32 is in contact with a piston rod assembly 1 through a friction plate 31. The outer wall of the piston rod assembly 1 is provided with a piston system assembly 2 The piston system assembly 2 is located inside the upper transmission cylinder 32, the lower transmission cylinder 33, and the large pulley base 34. The piston system assembly 2 contacts the inner wall of the lower transmission cylinder 33. A pressure input port 39 is provided on the side of the large pulley base 34. The deep groove ball bearing B37 is fixed to the large pulley base 34 via the bearing inner ring pressure ring 36. The deep groove ball bearing B37 is fixed to the large pulley base 34 via the bearing outer ring pressure ring 38. The pressure input port 39 is connected to the central hydraulic channel of the large pulley base 34. The central hydraulic channel of the large pulley base 34 corresponds to the hydraulic channel of the piston system assembly 2. Figure 2 As shown, the diameter of the large pulley 35 is twice the diameter of the small pulley 43. Figure 3As shown, the piston rod assembly 1 includes a piston rod fixing seat 13, the cross section of the piston rod fixing seat 13 is "concave", a piston rod 14 is arranged in the piston rod fixing seat 13, and the piston rod 14 is inserted into the piston system assembly 2. The outer wall of the piston rod fixing seat 13 is provided with a piston small tray 11, and the notch at the top of the piston rod fixing seat 13 is connected to the piston small tray 11 through the small tray pressing screw 12. Figure 4 As shown, the piston system assembly 2 includes a piston cylinder base 25, the outer wall of the piston cylinder base 25 is provided with an A-type elastic retaining ring 27 and two deep groove ball bearings A26 arranged side by side, the A-type elastic retaining ring 27 is arranged between the two deep groove ball bearings A26, the outer walls of the two deep groove ball bearings A26 are in contact with the inner wall of the lower transmission cylinder 33, the cross-section of the piston cylinder base 25 is "concave", the piston cylinder 24 is provided at the top notch of the piston cylinder base 25, the piston cylinder 24 and the outer walls of the piston cylinder base 25 are both provided with a piston cylinder pressing sleeve 23, the top inner wall of the piston cylinder pressing sleeve 23 is provided with a limit bearing 22, the limit bearing 22 is sleeved on the outer wall of the piston rod fixing seat 13, the limit bearing 22 is fixed to the piston cylinder pressing sleeve 23 through the limit bearing pressure ring 21; the large pulley base 34 has a "concave" cross-section, the piston cylinder base 25 is inserted into the groove notch of the large pulley base 34, and a sealing ring is provided between the groove notch of the large pulley base 34 and the piston cylinder base 25.

[0038] Example 7

[0039] The electric rotating device of the piston system of the piston pressure gauge proposed in this embodiment is as follows: Figure 1 As shown, it includes a large pulley base 34 and a synchronous motor 41. The large pulley base 34 is provided with a deep groove ball bearing B37. A large pulley 35 is installed on the outer ring of the deep groove ball bearing B37. The large pulley 35 is connected to a small pulley 43 through a belt 42. The small pulley 43 is fixed to the output shaft of the synchronous motor 41. The large pulley 35 is fixed with a lower transmission cylinder 33. The outer wall of the lower transmission cylinder 33 is fixed with an upper transmission cylinder 32. The top of the upper transmission cylinder 32 is in contact with a piston rod assembly 1 through a friction plate 31. The outer wall of the piston rod assembly 1 is provided with a piston system assembly 2 The piston system assembly 2 is located inside the upper transmission cylinder 32, the lower transmission cylinder 33, and the large pulley base 34. The piston system assembly 2 contacts the inner wall of the lower transmission cylinder 33. A pressure input port 39 is provided on the side of the large pulley base 34. The deep groove ball bearing B37 is fixed to the large pulley base 34 via the bearing inner ring pressure ring 36. The deep groove ball bearing B37 is fixed to the large pulley base 34 via the bearing outer ring pressure ring 38. The pressure input port 39 is connected to the central hydraulic channel of the large pulley base 34. The central hydraulic channel of the large pulley base 34 corresponds to the hydraulic channel of the piston system assembly 2. Figure 2As shown, the diameter of the large pulley 35 is twice the diameter of the small pulley 43. The synchronous motor 41 has a constant output speed of 60 r / min. The rotation speed of the large pulley 35 and the lower transmission cylinder 33 is 30 r / min through the belt 42. The rotation speed of the upper transmission cylinder 32 and the friction plate 31 is also 30 r / min. Figure 3 As shown, the piston rod assembly 1 includes a piston rod fixing seat 13, the cross section of the piston rod fixing seat 13 is "concave", a piston rod 14 is arranged in the piston rod fixing seat 13, and the piston rod 14 is inserted into the piston system assembly 2. The outer wall of the piston rod fixing seat 13 is provided with a piston small tray 11, and the notch at the top of the piston rod fixing seat 13 is connected to the piston small tray 11 through the small tray pressing screw 12. Figure 4 As shown, the piston system component 2 includes a piston cylinder base 25, the outer wall of the piston cylinder base 25 is provided with an A-type elastic retaining ring 27 and two deep groove ball bearings A26 arranged side by side, the A-type elastic retaining ring 27 is provided between the two deep groove ball bearings A26, the outer walls of the two deep groove ball bearings A26 are in contact with the inner wall of the lower transmission cylinder 33, the cross-section of the piston cylinder base 25 is "concave", the piston cylinder 24 is provided at the notch at the top of the piston cylinder base 25, the outer walls of the piston cylinder 24 and the piston cylinder base 25 are both provided with a piston cylinder pressing sleeve 23, the inner wall of the top of the piston cylinder pressing sleeve 23 is provided with a limit bearing 22, and the limit bearing 22 is provided on the movable On the outer wall of the plug rod fixing seat 13, the limit bearing 22 is fixedly connected to the piston cylinder pressing sleeve 23 through the limit bearing pressure ring 21; the cross-section of the large pulley base 34 is "concave", and the piston cylinder base 25 is inserted into the groove notch of the large pulley base 34. A sealing ring is provided between the groove notch of the large pulley base 34 and the piston cylinder base 25; the piston rod 14 is inserted into the piston cylinder 24, and the limit bearing 22 and the deep groove ball bearing A26 are coaxially arranged with the upper transmission cylinder 32, the lower transmission cylinder 33, the large pulley base 34, the large pulley 35 and the deep groove ball bearing B37; the main shaft of the synchronous motor 41 and the small pulley 43 are fixed by a set screw.

Claims

1. Electric rotating device of piston system of piston pressure gauge, characterized in that: The invention comprises a large pulley base (34) and a synchronous motor (41), wherein a deep groove ball bearing B (37) is sleeved on the large pulley base (34), a large pulley (35) is mounted on the outer ring of the deep groove ball bearing B (37), the large pulley (35) is connected to a small pulley (43) via a belt (42), the small pulley (43) is fixed to the output shaft of the synchronous motor (41), a lower transmission cylinder (33) is fixed to the outer wall of the lower transmission cylinder (33), and a plurality of small pulleys (43) are connected to the output shaft of the synchronous motor (41). An upper transmission cylinder (32) is provided. The top end of the upper transmission cylinder (32) is in contact with a piston rod assembly (1) through a friction plate (31). The outer wall of the piston rod assembly (1) is provided with a piston system assembly (2). The piston system assembly (2) is provided in the upper transmission cylinder (32), the lower transmission cylinder (33) and the large pulley base (34). The piston system assembly (2) contacts the inner wall of the lower transmission cylinder (33). A pressure input port (39) is provided on the side of the large pulley base (34).

2. The electric rotation device of the piston system of the piston pressure gauge according to claim 1, characterized in that: The deep groove ball bearing B (37) is fixedly connected to the large pulley base (34) via a bearing inner ring pressure ring (36), and the deep groove ball bearing B (37) is fixedly connected to the large pulley (35) via a bearing outer ring pressure ring (38).

3. The electric rotation device of the piston system of the piston pressure gauge according to claim 2, characterized in that: The pressure input port (39) is connected to the central hydraulic channel of the large pulley base (34), and the central hydraulic channel of the large pulley base (34) corresponds to the hydraulic channel of the piston system component (2).

4. The electric rotation device of the piston system of the piston pressure gauge according to claim 3, characterized in that: The diameter of the large pulley (35) is twice the diameter of the small pulley (43).

5. The electric rotation device of the piston system of the piston pressure gauge according to claim 4, characterized in that: The piston rod assembly (1) includes a piston rod fixing seat (13), the cross section of the piston rod fixing seat (13) is "concave", a piston rod (14) is provided in the piston rod fixing seat (13), the piston rod (14) is inserted into the piston system assembly (2), the outer wall of the piston rod fixing seat (13) is provided with a piston small tray (11), and the notch at the top of the piston rod fixing seat (13) is connected to the piston small tray (11) via a small tray pressing screw (12).

6. The electric rotation device of the piston system of the piston pressure gauge according to claim 5, characterized in that: The piston system component (2) includes a piston cylinder base (25), the outer wall of the piston cylinder base (25) is provided with an A-type elastic retaining ring (27) and two deep groove ball bearings A (26) arranged side by side, the A-type elastic retaining ring (27) is arranged between the two deep groove ball bearings A (26), the outer walls of the two deep groove ball bearings A (26) are in contact with the inner wall of the lower transmission cylinder (33), the cross section of the piston cylinder base (25) is "concave", the top notch of the piston cylinder base (25) is provided with a piston cylinder (24), the outer walls of the piston cylinder (24) and the piston cylinder base (25) are both provided with a piston cylinder pressing sleeve (23), the top inner wall of the piston cylinder pressing sleeve (23) is provided with a limit bearing (22), the limit bearing (22) is sleeved on the outer wall of the piston rod fixing seat (13), and the limit bearing (22) is fixedly connected to the piston cylinder pressing sleeve (23) through a limit bearing pressure ring (21).

7. The electric rotation device of the piston system of the piston pressure gauge according to claim 6, characterized in that: The large pulley base (34) has a concave cross-section, the piston cylinder base (25) is inserted into the groove notch of the large pulley base (34), and a sealing ring is provided between the groove notch of the large pulley base (34) and the piston cylinder base (25).

8. The electric rotating device for the piston system of a piston pressure gauge according to claim 7, characterized in that: The piston rod (14) is inserted into the piston cylinder (24), and the limit bearing (22) and the deep groove ball bearing A (26) are coaxially arranged with the upper transmission cylinder (32), the lower transmission cylinder (33), the large pulley base (34), the large pulley (35) and the deep groove ball bearing B (37).

9. The electric rotating device for the piston system of a piston pressure gauge according to claim 8, characterized in that: The main shaft of the synchronous motor (41) and the small pulley (43) are fixedly connected via set screws.

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