Heavy-load insertion pipe type nut

Abstract

The utility model relates to the technical field of ball screw pairs, and discloses a heavy-load insertion pipe type nut which comprises a nut body, balls are arranged in the nut body, an oil groove is formed in the inner wall of the nut body, a through hole is formed in the inner wall of the nut body, and the through hole is communicated with the oil groove. An oil pipe is fixedly installed on the inner wall of the nut body, the outer wall of the oil pipe is in threaded connection with a pipe cover, a lubricating mechanism is arranged on the nut body and comprises a boss, one end of the boss is fixedly installed on the outer wall of the nut body, and a pressing rod is hinged to the other end of the boss. And by arranging the lubricating mechanism, lubricating oil can be added to the balls from the inner side of the nut body, so that the balls in the nut body can be covered by the lubricating oil, the balls can be comprehensively lubricated, abrasion of the balls is avoided, and the service life of the nut body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of ball screw pairs, in particular to a heavy-load inserted nut. Background Technique

[0002] The ball screw pair is also known as the ball screw pair and the ball screw nut pair. The ball screw pair is composed of a screw rod and a nut in a supporting combination, and is the most accurate and commonly used transmission device in transmission machinery.

[0003] The nut of the ball screw pair is driven by balls between the screw rod. In order to avoid wear of the balls after long-term operation, the balls inside the nut need to be regularly lubricated with lubricating oil. However, after the nut and the screw rod are installed, the balls are located in the gap between the nut and the screw rod, and it is difficult for the lubricating oil to fully cover the balls, resulting in limited lubrication effect of the balls and affecting the service life of the nut. Content of the Utility Model

[0004] The purpose of the utility model is to provide a heavy-load inserted nut to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A heavy-load inserted nut, including a nut body, a ball is arranged inside the nut body, an oil groove is opened on the inner wall of the nut body, a through hole is opened on the inner wall of the nut body, an oil pipe is fixedly installed on the inner wall of the nut body, a pipe cap is threadedly connected to the outer wall of the oil pipe, a lubricating mechanism is arranged on the nut body, and lubricating oil can be added to the balls from the inner side of the nut body by setting the lubricating mechanism. An auxiliary mechanism is arranged on the lubricating mechanism, and the staff can conveniently judge the remaining amount of lubricating oil in the oil groove by setting the auxiliary mechanism. The lubricating mechanism includes:

[0006] A boss, one end of the boss is fixedly installed on the outer wall of the nut body, the other end of the boss is hinged with a pressing rod, a limiting groove is opened on the pressing rod, and a torsion spring is arranged at the hinged part of the pressing rod and the boss. By setting the pressing rod and the limiting groove, the connecting rod and the L-shaped rod can be extruded;

[0007] A piston, the piston is slidably connected to the inner wall of the oil groove, a connecting rod is fixedly installed on the top of the piston, and the end of the connecting rod away from the piston penetrates through the nut body and fits on the inner wall of the limiting groove. By setting the piston, the lubricating oil in the oil groove can be extruded out through the through hole;

[0008] A sealing plate, the sealing plate is slidably connected to the inner wall of the oil groove, an L-shaped rod is fixedly installed on the top of the sealing plate, and the end of the L-shaped rod away from the sealing plate penetrates through the nut body and fits on the inner wall of the limiting groove.

[0009] Preferably, a rubber pad is fixedly installed at the bottom of the sealing plate. By setting the sealing plate in cooperation with the rubber pad, the through hole can be blocked to avoid waste of lubricating oil.

[0010] Preferably, the auxiliary mechanism includes a sliding rod which is slidably connected to the inner wall of the piston and penetrates through the piston.

[0011] Preferably, a floating plate is fixedly installed at one end of the sliding rod, and a limiting block is fixedly installed at the other end of the sliding rod after penetrating through the nut body. By setting the floating plate, the sliding rod can be driven to slide up and down following the change of the liquid level.

[0012] Preferably, the sliding rod is slidably connected to the penetration part of the nut body.

[0013] Preferably, the connecting rod is slidably connected to the penetration part of the nut body, and the L-shaped rod is slidably connected to the penetration part of the nut body.

[0014] Compared with the prior art, the present utility model provides a heavy-load insert-type nut, which has the following

[0015] beneficial effects:

[0016] 1. For this heavy-load insert-type nut, through the setting of the lubricating mechanism, lubricating oil can be added to the balls from the inner side of the nut body, so that the balls inside the nut body can be covered with lubricating oil, thereby comprehensively lubricating the balls, avoiding wear of the balls, and improving the service life of the nut body.

[0017] 2. For this heavy-load insert-type nut, through the setting of the auxiliary mechanism, it is convenient for the staff to judge the remaining amount of lubricating oil in the oil groove, so as to add lubricating oil in time. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 is a schematic sectional structure diagram of the present utility model;

[0020] Figure 3 is a schematic bottom view structure diagram of the sealing plate of the present utility model;

[0021] Figure 4 is the present utility model Figure 2 is an enlarged structure diagram of part A.

[0022] In the figure: 1, nut body; 2, ball; 3, oil groove; 4, through hole; 5, oil pipe; 6, pipe cap; 7, lubricating mechanism; 71, boss; 72, piston; 73, sealing plate; 74, pressing rod; 75, limiting groove; 76, torsion spring; 77, connecting rod; 78, L-shaped rod; 79, rubber pad; 8, auxiliary mechanism; 81, sliding rod; 82, floating plate; 83, limiting block. Detailed implementation mode

[0023] As Figures 1-4 shown, the present utility model provides a technical solution: a heavy-load inserted tube type nut, including a nut body 1, a ball 2 is arranged inside the nut body 1, an oil groove 3 is opened on the inner wall of the nut body 1, a through hole 4 is opened on the inner wall of the nut body 1, and the lubricating oil inside the oil groove 3 can be discharged outward through the through hole 4. An oil pipe 5 is fixedly installed on the inner wall of the nut body 1, and a pipe cap 6 is threadedly connected to the outer wall of the oil pipe 5. Rotate the pipe cap 6 to separate it from the oil pipe 5. At this time, lubricating oil can be added to the inside of the oil groove 3 through the oil pipe 5. A lubricating mechanism 7 is arranged on the nut body 1. By arranging the lubricating mechanism 7, lubricating oil can be added to the ball 2 from the inner side of the nut body 1, so that the ball 2 inside the nut body 1 can be covered with lubricating oil. An auxiliary mechanism 8 is arranged on the lubricating mechanism 7. By arranging the auxiliary mechanism 8, it is convenient for the staff to judge the remaining amount of lubricating oil inside the oil groove 3, so as to add lubricating oil in time.

[0024] The above lubrication mechanism 7 includes a boss 71, a piston 72, a sealing plate 73, a pressure rod 74, a limiting groove 75, a torsion spring 76, a connecting rod 77, an L-shaped rod 78, and a rubber pad 79; one end of the boss 71 is fixedly installed on the outer wall of the nut body 1, the other end of the boss 71 is hinged with the pressure rod 74, the limiting groove 75 is formed on the pressure rod 74, a torsion spring 76 is arranged at the hinged part of the pressure rod 74 and the boss 71, pressing down the pressure rod 74 makes the pressure rod 74 rotate downward on the side wall of the boss 71 and compress the torsion spring 76, when the pressure rod 74 is released, the elastic force of the torsion spring 76 can drive the pressure rod 74 to rotate and reset. The piston 72 is slidably connected to the inner wall of the oil groove 3, and the piston 72 can be used to extrude the lubricating oil inside the oil groove 3 outward through the through hole 4, so that the lubricating oil flows on the surface of the ball 2. A connecting rod 77 is fixedly installed on the top of the piston 72, one end of the connecting rod 77 away from the piston 72 penetrates through the nut body 1 and fits on the inner wall of the limiting groove 75, and the connecting rod 77 is slidably connected to the penetrating part of the nut body 1. When the pressure rod 74 rotates downward, the limiting groove 75 will squeeze the connecting rod 77 downward, so that the connecting rod 77 drives the piston 72 to slide downward on the inner wall of the oil groove 3. The sealing plate 73 is slidably connected to the inner wall of the oil groove 3, an L-shaped rod 78 is fixedly installed on the top of the sealing plate 73, one end of the L-shaped rod 78 away from the sealing plate 73 penetrates through the nut body 1 and fits on the inner wall of the limiting groove 75, and the L-shaped rod 78 is slidably connected to the penetrating part of the nut body 1. A rubber pad 79 is fixedly installed on the bottom of the sealing plate 73. When the pressure rod 74 rotates downward on the side wall of the boss 71, the limiting groove 75 will squeeze the L-shaped rod 78 upward, so that the L-shaped rod 78 pulls the sealing plate 73 upward, making the sealing plate 73 slide upward on the inner wall of the oil groove 3 and driving the rubber pad 79 to separate from the oil groove 3. At this time, the through hole 4 is in communication with the oil groove 3.

[0025] The above auxiliary mechanism 8 includes a sliding rod 81, a floating plate 82, and a limiting block 83; the sliding rod 81 is slidably connected to the inner wall of the piston 72 and penetrates through the piston 72. One end of the sliding rod 81 is fixedly installed with the floating plate 82, and the other end of the sliding rod 81 penetrates through the nut body 1 and is fixedly installed with the limiting block 83. As the lubricating oil is consumed, the liquid level inside the oil groove 3 will gradually drop. At this time, the floating plate 82 will drive the sliding rod 81 to slide downward as the liquid level drops, and then the part of the sliding rod 81 exposed outside the nut body 1 will gradually shorten. The sliding rod 81 is slidably connected to the penetrating part of the nut body 1.

[0026] Working principle: When it is necessary to lubricate the ball 2, press down the pressing rod 74, so that the pressing rod 74 rotates downward on the side wall of the boss 71 and compresses the torsion spring 76. At this time, the limiting groove 75 will squeeze the L-shaped rod 78 upward, causing the L-shaped rod 78 to pull the sealing plate 73 upward, making the sealing plate 73 slide upward on the inner wall of the oil groove 3 and driving the rubber pad 79 to separate from the oil groove 3. At this time, the through hole 4 is disengaged from the blockage of the sealing plate 73, and the lubricating oil inside the oil groove 3 can be discharged outward through the through hole 4. At the same time, when the pressing rod 74 rotates downward, the limiting groove 75 will squeeze the connecting rod 77 downward, causing the connecting rod 77 to drive the piston 72 to slide downward on the inner wall of the oil groove 3. At this time, the piston 72 can be used to extrude the lubricating oil inside the oil groove 3 outward through the through hole 4, so that the lubricating oil flows on the surface of the ball 2, and the balls 2 inside the nut body 1 can be covered with lubricating oil, thereby lubricating the balls 2, avoiding wear of the balls 2, and improving the service life of the nut body 1.

[0027] After the piston 72 extrudes the lubricating oil inside the oil groove 3 outward through the through hole 4, the liquid level inside the oil groove 3 will gradually drop. At the same time, the floating plate 82 will drive the sliding rod 81 to slide downward as the liquid level drops, and then the part of the sliding rod 81 exposed outside the nut body 1 will gradually shorten. According to the length of the exposed part of the sliding rod 81, the liquid level of the lubricating oil inside the oil groove 3 can be judged, which is convenient for the staff to add lubricating oil in time according to the usage situation.

[0028] The above generally describes the present invention in detail, but based on the present invention, some modifications or improvements can be made, which are obvious to those of ordinary skill in the art. Therefore, modifications or improvements made without departing from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A heavy-load cannulated nut, comprising a nut body (1), wherein a ball (2) is provided inside the nut body (1), characterized in that: An oil groove (3) is provided on the inner wall of the nut body (1), a through hole (4) is provided on the inner wall of the nut body (1), an oil pipe (5) is fixedly mounted on the inner wall of the nut body (1), a pipe cover (6) is threadedly connected to the outer wall of the oil pipe (5), a lubricating mechanism (7) is provided on the nut body (1), an auxiliary mechanism (8) is provided on the lubricating mechanism (7), and the lubricating mechanism (7) comprises: A boss (71), one end of the boss (71) is fixedly mounted on the outer wall of the nut body (1), the other end of the boss (71) is hingedly connected to a pressure rod (74), a limiting groove (75) is provided on the pressure rod (74), and a torsion spring (76) is provided at the hinge between the pressure rod (74) and the boss (71); A piston (72) is slidably connected to the inner wall of the oil groove (3); a connecting rod (77) is fixedly installed on the top of the piston (72); an end of the connecting rod (77) away from the piston (72) passes through the nut body (1) and is attached to the inner wall of the limiting groove (75); A sealing plate (73) is slidably connected to the inner wall of the oil groove (3), and an L-rod (78) is fixedly installed on the top of the sealing plate (73). The end of the L-rod (78) away from the sealing plate (73) passes through the nut body (1) and fits on the inner wall of the limiting groove (75).

2. A heavy-load cannulated nut according to claim 1, characterized in that: A rubber pad (79) is fixedly mounted on the bottom of the sealing plate (73).

3. The heavy-load cannulated nut according to claim 1, characterized in that: The auxiliary mechanism (8) includes a sliding rod (81), the sliding rod (81) is slidably connected to the inner wall of the piston (72), and the sliding rod (81) passes through the piston (72).

4. The heavy-duty inserted nut according to claim 3, wherein: A floating plate (82) is fixedly mounted on one end of the slide rod (81), and a limiting block (83) is fixedly mounted on the other end of the slide rod (81) through the nut body (1).

5. The heavy-load cannulated nut according to claim 4, characterized in that: The sliding rod (81) is slidably connected to the penetration point of the nut body (1).

6. The heavy-duty inserted nut according to claim 1, wherein: The connecting rod (77) is slidably connected to the through-hole of the nut body (1), and the L rod (78) is slidably connected to the through-hole of the nut body (1).

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