Ball nut facilitating replacement of external circulation reverser

Abstract

The utility model relates to the technical field of ball nut circulators, in particular to a ball nut facilitating replacement of an external circulation reverser, which comprises a screw rod, a circulation nut is mounted on the outer wall of the screw rod, and sealing scrapers are mounted at opposite ports of the circulation nut. When the limiting sliding plate slides, the limiting sliding plate can drive the conducting hole to transversely move, then the conducting hole and the communicating hole are staggered, the limiting sliding plate has the blocking effect on the ball, then thrust is only needed to be applied to the reverser, then the reverser drives the sliding block to slide on the inner wall of the sliding groove, and therefore the sliding block can slide on the inner wall of the sliding groove. The reverser can be pulled out to be conveniently replaced; an electric signal generated by the oil liquid sensor is transmitted to the controller through the wire, when set parameters are reached, the controller controls the oil pump to discharge lubricating oil in the inner cavity of the oil storage shell into the inner cavity of the guide pipe, the lubricating oil is automatically added to the device, and the practicability is better.

Description

Technical Field

[0001] The utility model relates to the technical field of ball nut circulators, in particular to a ball nut which is convenient for replacing an external circulation reverser. Background Art

[0002] As a precision transmission device that converts rotational motion into linear motion, the ball screw pair ensures precise relative displacement between the screw and the nut while transmitting power. One of its notable features is its low coefficient of friction, which makes it excellent in many high-precision applications. To allow the balls to circulate and roll within the nut, a circulator is usually installed on the nut. Depending on the design, these circulators can be divided into two types: internal circulation structure and external circulation structure.

[0003] When the ball never leaves the surface of the screw during the circulation process, it is an internal circulation. The internal circulation structure is compact, the nut is small, the outer diameter of the inner circulation nut is small, and the load is small. It is suitable for small light-load screws with high sensitivity and high-precision transmission characteristics, but it is not suitable for heavy loads and the reverser is difficult to process; when the ball returns to the screw and nut through the spiral groove or cannula on the outer surface of the nut, it is an external circulation. The radial dimension of the external circulation structure is larger and the manufacturing is simpler; the external circulation has a wide adaptability and a large installation space; the external circulation can withstand higher working temperatures and is mostly used for large and heavy-loaded screws.

[0004] Existing ball nut reverse circulators typically utilize a monolithic structure. Damage to the reverse circulator prevents timely replacement and maintenance, impacting the proper functioning of the entire device. Furthermore, the ball nut requires regular lubrication of its inner cavity during use. Insufficient lubrication can lead to wear between the ball and the screw, potentially causing the ball to fail.

[0005] Therefore, a ball nut that is easy to replace the external circulation reverser is needed to improve the above problems. Utility Model Content

[0006] In order to solve the problem that when the ball nut of the external circulation reverser is used, the reverse circulator is damaged, which will lead to the inability to replace and maintain it in time, thereby affecting the normal use of the entire device, the utility model provides a ball nut that is easy to replace the external circulation reverser to solve the above problem.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A ball nut for facilitating replacement of an external circulation reverser comprises a screw rod, a circulation nut is mounted on the outer wall of the screw rod, sealing scrapers are mounted at opposite ports of the circulation nut, a spiral groove is opened on the outer wall of the screw rod, an external circulation component is mounted on the outer wall of the circulation nut, and an oil injection component is mounted on the outer wall of the external circulation component.

[0009] As a preferred solution of the present invention, the external circulation component includes a fixing bolt, which is installed on the outer wall of the circulation nut, and a mounting plate is symmetrically provided on the outer wall of the fixing bolt.

[0010] As a preferred solution of the present invention, a limiting shell is symmetrically arranged on the inner wall of the mounting plate, a connecting hole is opened on the inner wall of the limiting shell, a conduit is installed at one end of the connecting hole, the conduit is connected to the outer wall of the circulation nut, and a limiting slide is slidably connected to the inner wall of the limiting shell.

[0011] As a preferred solution of the present invention, a conducting hole is provided on the outer wall of the limiting slide, and the conducting hole is located on one side of the connecting hole. A sliding groove is provided on the outer wall of the limiting shell, and a slider is slidably connected to the inner wall of the sliding groove, and a reverser is installed on the outer wall of the slider.

[0012] As a preferred solution of the present invention, the oil filling assembly includes an oil sensor and an oil storage shell. The oil sensor is embedded in the outer wall of the circulation nut, and the sensing end of the oil sensor extends to the inner cavity of the circulation nut. The oil storage shell is installed on the outer wall of the mounting plate.

[0013] As a preferred solution of the present invention, a controller is installed on the outer wall of the oil storage housing, an oil pump is installed at the oil outlet of the oil storage housing, and one end of the oil pump is connected to the outer wall of the conduit.

[0014] As a preferred solution of the present invention, the controller is connected to the oil sensor and the oil pump respectively through wires and the connection method is electrical connection. There are two groups of fixing bolts and they are respectively located on the opposite outer walls of the circulation nuts.

[0015] As a preferred solution of the present invention, the mounting plates are provided in two groups and are respectively located on the outer walls of the fixing bolts, the sliding grooves are provided in two groups and are respectively located on the outer walls of the limiting shell, and the sliding blocks are provided in multiple groups and are respectively located on the opposite outer walls of the limiting shell.

[0016] Compared with the prior art, the present invention can realize the convenient replacement of the external circulation reverser by arranging an external circulation component in the ball nut for facilitating the replacement of the external circulation reverser. When the limit slide slides, the limit slide drives the conducting hole to move laterally, thereby causing the conducting hole and the connecting hole to be misaligned. When the conducting hole and the connecting hole are misaligned, the balls in the inner cavity of the catheter cannot enter the conducting hole through the connecting hole, and the limit slide has a blocking effect on the balls. Subsequently, it is only necessary to apply a thrust to the reverser, thereby causing the reverser to drive the slider to slide on the inner wall of the slide groove, and the reverser can be pulled out for easy replacement, and the operation is simpler, thereby solving the problem of damage to the reverse circulator, which will lead to the inability to replace and maintain it in time, thereby affecting the normal use of the entire device.

[0017] The utility model can realize automatic oil filling of the circulation nut by arranging an oil filling assembly in the ball nut of the external circulation reverser for easy replacement. The oil sensor generates data in real time according to the lubricating oil in the inner cavity of the catheter. At the same time, the oil sensor generates an electrical signal which is transmitted to the controller through a wire. When the set parameters are reached, the controller controls the oil pump to operate, which will cause the oil pump to extract the lubricating oil from the inner cavity of the oil storage shell. At the same time, the oil pump discharges the lubricating oil into the inner cavity of the catheter, automatically adding lubricating oil to the device, thereby solving the problem of wear between the ball and the screw rod caused by insufficient lubricating oil, which may eventually cause the wear and failure of the ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a side structural diagram of the present utility model;

[0020] Figure 3 For this utility model Figure 1 A magnified schematic diagram of the A structure;

[0021] Figure 4 This is a schematic diagram of the structure of the inverter of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the limit housing of the utility model;

[0023] Figure 6 For this utility model Figure 5 A magnified schematic diagram of the B structure.

[0024] In the figure: 1. Screw; 2. Circulation nut; 3. Sealing scraper; 4. Spiral groove; 5. External circulation assembly; 501. Fixing bolt; 502. Mounting plate; 503. Limit housing; 504. Connecting hole; 505. Conduit; 506. Limit slide plate; 507. Through hole; 508. Slide groove; 509. Slider; 510. Reverser; 6. Oil filling assembly; 601. Oil sensor; 602. Oil storage housing; 603. Controller; 604. Oil pump. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] Example: See Figure 1-6 The ball nut shown is convenient for replacing the external circulation reverser, comprising a screw rod 1, a circulation nut 2 being mounted on the outer wall of the screw rod 1, a sealing scraper 3 being mounted at the opposite end of the circulation nut 2, a spiral groove 4 being opened on the outer wall of the screw rod 1, an external circulation assembly 5 being mounted on the outer wall of the circulation nut 2, and an oil injection assembly 6 being mounted on the outer wall of the external circulation assembly 5.

[0027] In this embodiment, specific reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 The outer circulation component 5 includes a fixing bolt 501, which is installed on the outer wall of the circulation nut 2. A mounting plate 502 is symmetrically arranged on the outer wall of the fixing bolt 501, and a limiting shell 503 is symmetrically arranged on the inner wall of the mounting plate 502. A connecting hole 504 is provided on the inner wall of the limiting shell 503, and a conduit 505 is installed at one end of the connecting hole 504. The conduit 505 is connected to the outer wall of the circulation nut 2, and a limiting slide 506 is slidably connected to the inner wall of the limiting shell 503. A conducting hole 507 is provided on the outer wall of the limiting slide 506. The conducting hole 507 is located on one side of the connecting hole 504, and a slide groove 508 is provided on the outer wall of the slide groove 508. A slider 509 is slidably connected to the inner wall of the slider 509, and a reverser 510 is installed on the outer wall of the slider 509.

[0028] Based on the above structural features and the connection relationship, the limiting slide 506 moves laterally in the inner cavity of the limiting housing 503. When the limiting slide 506 slides, the limiting slide 506 drives the conducting hole 507 to move laterally, thereby causing the conducting hole 507 and the communicating hole 504 to be misaligned. When the conducting hole 507 and the communicating hole 504 are misaligned, the ball in the inner cavity of the conduit 505 cannot pass through the communicating hole 504 into the conducting hole 507, so that the limiting slide 506 has a blocking effect on the ball.

[0029] In this embodiment, specific reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The oil filling assembly 6 includes an oil sensor 601 and an oil storage shell 602. The oil sensor 601 is embedded in the outer wall of the circulation nut 2, and the sensing end of the oil sensor 601 extends to the inner cavity of the circulation nut 2. The oil storage shell 602 is installed on the outer wall of the mounting plate 502. A controller 603 is installed on the outer wall of the oil storage shell 602. An oil pump 604 is installed at the oil outlet of the oil storage shell 602. One end of the oil pump 604 is connected to the outer wall of the conduit 505.

[0030] Among them, the controller 603 is connected to the oil sensor 601 and the oil pump 604 through wires and the connection method is electrical connection, so that the device is powered on, and the controller 603 controls the oil sensor 601 and the oil pump 604 to operate, and there are two groups of fixing bolts 501 and they are respectively located on the opposite outer walls of the circulation nut 2, and there are two groups of mounting plates 502 and they are respectively located on the outer walls of the fixing bolts 501, and there are two groups of slide grooves 508 and they are respectively located on the outer walls of the limiting shell 503, and there are multiple groups of sliders 509 and they are respectively located on the opposite outer walls of the limiting shell 503.

[0031] This solution is convenient for replacing the ball nut of the external circulation reverser when it is working. A limit shell 503 is symmetrically arranged on the inner wall of the mounting plate 502. A connecting hole 504 is provided on the inner wall of the limit shell 503. A conduit 505 is installed at one end of the connecting hole 504. The conduit 505 is connected to the outer wall of the circulation nut 2. A limit slide 506 is slidably connected to the inner wall of the limit shell 503. A conducting hole 507 is provided on the outer wall of the limiting slide 506. The conducting hole 507 is located on one side of the connecting hole 504. When the ball in the inner cavity of the circulation nut 2 slides into the inner cavity of the reverser 510 through the conduit 505, if the reverser 510 needs to be replaced, the limit slide 506 is first pulled, and then the limit slide 506 is moved in the limit shell 50 3 moves laterally. When the limiting slide 506 slides, the limiting slide 506 drives the conducting hole 507 to move laterally, thereby causing the conducting hole 507 and the communicating hole 504 to be misaligned. When the conducting hole 507 and the communicating hole 504 are misaligned, the balls in the inner cavity of the conduit 505 cannot enter the conducting hole 507 through the communicating hole 504, and the limiting slide 506 has a blocking effect on the balls. Subsequently, it is only necessary to apply a thrust to the deflector 510, thereby causing the deflector 510 to drive the slider 509 to slide on the inner wall of the slide groove 508, and the deflector 510 can be pulled out for easy replacement, which is simpler to operate, thereby solving the problem of damage to the reverse circulator, which will lead to the inability to replace and maintain it in time, thereby affecting the normal use of the entire device.

[0032] The oil sensor 601 is embedded in the outer wall of the circulation nut 2, and the sensing end of the oil sensor 601 extends to the inner cavity of the circulation nut 2. The oil sensor 601 generates data in real time according to the lubricating oil in the inner cavity of the conduit 505. At the same time, the oil sensor 601 generates an electrical signal that is transmitted to the controller 603 through a wire. The oil storage shell 602 is installed on the outer wall of the mounting plate 502. The controller 603 is installed on the outer wall of the oil storage shell 602. The oil outlet of the oil storage shell 602 is installed with an oil pump 604. One end of the oil pump 604 is connected to the outer wall of the conduit 505. When the set parameters are reached, the controller 603 controls the oil pump 604 to operate, which will cause the oil pump 604 to extract the lubricating oil from the inner cavity of the oil storage shell 602. At the same time, the oil pump 604 discharges the lubricating oil into the inner cavity of the conduit 505, automatically adding lubricating oil to the device, thereby solving the problem of insufficient lubricating oil, which will cause wear between the ball and the screw, and may eventually cause the ball to fail due to wear.

[0033] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ball nut for facilitating replacement of an external circulation reverser, comprising a screw rod (1), characterized in that: A circulation nut (2) is mounted on the outer wall of the screw rod (1), a sealing scraper (3) is mounted at the opposite end of the circulation nut (2), a spiral groove (4) is provided on the outer wall of the screw rod (1), an external circulation assembly (5) is mounted on the outer wall of the circulation nut (2), and an oil injection assembly (6) is mounted on the outer wall of the external circulation assembly (5).

2. The ball nut for facilitating replacement of an external circulation reverser according to claim 1, characterized in that: The outer circulation assembly (5) comprises a fixing bolt (501), wherein the fixing bolt (501) is mounted on the outer wall of the circulation nut (2), and a mounting plate (502) is symmetrically arranged on the outer wall of the fixing bolt (501).

3. The ball nut for facilitating replacement of an external circulation reverser according to claim 2, characterized in that: A limiting housing (503) is symmetrically arranged on the inner wall of the mounting plate (502), a connecting hole (504) is opened on the inner wall of the limiting housing (503), a conduit (505) is installed at one end of the connecting hole (504), the conduit (505) is connected to the outer wall of the circulation nut (2), and a limiting slide (506) is slidably connected to the inner wall of the limiting housing (503).

4. The ball nut for facilitating replacement of an external circulation reverser according to claim 3, characterized in that: A conducting hole (507) is provided on the outer wall of the limiting slide (506), and the conducting hole (507) is located on one side of the connecting hole (504). A sliding groove (508) is provided on the outer wall of the limiting housing (503), and a slider (509) is slidably connected to the inner wall of the sliding groove (508), and a deflector (510) is installed on the outer wall of the slider (509).

5. The ball nut for facilitating replacement of an external circulation reverser according to claim 4, characterized in that: The oil filling assembly (6) comprises an oil sensor (601) and an oil storage housing (602), wherein the oil sensor (601) is embedded in the outer wall of the circulation nut (2), and the sensing end of the oil sensor (601) extends to the inner cavity of the circulation nut (2), and the oil storage housing (602) is mounted on the outer wall of the mounting plate (502).

6. The ball nut for facilitating replacement of an external circulation reverser according to claim 5, characterized in that: A controller (603) is installed on the outer wall of the oil storage housing (602), and an oil pump (604) is installed at the oil outlet of the oil storage housing (602). One end of the oil pump (604) is connected to the outer wall of the conduit (505).

7. The ball nut for facilitating replacement of an external circulation reverser according to claim 6, characterized in that: The controller (603) is connected to the oil sensor (601) and the oil pump (604) via wires, and the connection method is electrical connection. The fixing bolts (501) are provided in two groups and are respectively located on opposite outer walls of the circulation nut (2).

8. The ball nut for facilitating replacement of an external circulation reverser according to claim 4, characterized in that: The mounting plates (502) are provided in two groups and are respectively located on the outer wall of the fixing bolt (501); the sliding grooves (508) are provided in two groups and are respectively located on the outer wall of the limiting shell (503); and the sliding blocks (509) are provided in multiple groups and are respectively located on the opposite outer walls of the limiting shell (503).

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