CN209800416U - Oil cylinder with fine adjustment, buffering and sealing automatic compensation functions - Google Patents

Abstract

The utility model relates to a but fine setting area buffering and sealed automatic compensation's hydro-cylinder, the cylinder body has, the cylinder bottom, piston and piston rod, the cylinder body passes through welded fastening with the cylinder bottom and is connected, the piston is installed on the piston rod, piston and piston rod are installed in the cylinder body inner chamber, the side is equipped with first hydraulic fluid port and second hydraulic fluid port on the cylinder body, the cylinder body front end is equipped with the uide bushing, the uide bushing passes through bolt fixed mounting on the cylinder body, be equipped with sealed compensation unit on the uide bushing inner wall, be equipped with compensating spring and compensation sealing washer on the sealed compensation unit, the uide bushing is just being equipped with buffer unit in the one side of piston, buffer unit quantity is 4, evenly distributed is on the circle footpath of uide bushing, the centre that piston and piston rod are connected is. The utility model aims at overcoming the defect that prior art exists, provide a take buffering, sealing washer can automatic compensation and can suitably adjust the hydro-cylinder of piston and cylinder body inner wall angle after wearing and tearing.

Description

Oil cylinder with fine adjustment, buffering and sealing automatic compensation functions

Technical Field

The utility model relates to a hydraulic actuator, especially a but fine setting area buffering and automatic compensation's hydro-cylinder.

background

The oil cylinder is used as a hydraulic actuating element, has simple structure, no transmission clearance and stable motion, is widely applied to various mechanical fields, has various structural forms and various classification methods, is divided into a piston type, a plunger type, a telescopic type and a swing type according to the structural form, and has the working principle of converting hydraulic energy into mechanical energy and making linear or swing reciprocating motion no matter which type of oil cylinder is used. Because the oil cylinder is driven by a mechanism with certain mass, the oil cylinder still has larger kinetic energy when moving to the stroke midpoint, if the oil cylinder does not decelerate and buffer in time, the oil cylinder can collide with a cylinder body mechanically, the service life of the oil cylinder can be reduced in the past, potential safety hazards can be generated at any time, in addition, a sealing ring is one of necessary sealing units of the oil cylinder, if the existing sealing unit is abraded, the existing sealing unit needs to be disassembled and replaced, otherwise, hydraulic oil can be leaked, in addition, in the process of the movement of a piston in an inner cavity of the cylinder body, blockage caused by poor angle between the piston and the inner wall of the cylinder body can occur, and therefore, the oil cylinder with the buffer and the sealing ring can automatically compensate after being abraded and can properly adjust the angle between the piston and the inner wall of the.

Disclosure of Invention

The utility model aims at overcoming the defect that prior art exists, provide a take buffering, sealing washer can automatic compensation and can suitably adjust the hydro-cylinder of piston and cylinder body inner wall angle after wearing and tearing.

Realize the utility model discloses the technical scheme of purpose is: a fine-adjustment oil cylinder with buffering, sealing and automatic compensation functions is provided with a cylinder body, a cylinder bottom, a piston and a piston rod, wherein the cylinder body is fixedly connected with the cylinder bottom through welding; a sealing compensation unit is arranged on the inner wall of the guide sleeve; the number of the compensation units can be specifically set according to the inner diameter of the guide sleeve or the size of the piston rod; the sealing compensation unit is provided with a compensation spring and a compensation sealing ring; a compensation pad is additionally arranged between the compensation spring and the compensation sealing ring; a sliding cylinder and a lock cylinder are arranged on the periphery of the compensation spring; a buffer unit is arranged on one surface of the guide sleeve, which is opposite to the piston; the number of the buffer units is equal to that of the buffer units, and the buffer units are uniformly distributed on the ring diameter of the guide sleeve; a roller path is arranged in the middle of the connection between the piston and the piston rod; the piston is provided with a threaded hole which is communicated with the raceway; and a steel ball is arranged in the raceway, the diameter of the steel ball is the same as that of the raceway, and the diameter of the steel ball is smaller than the diameter of a thread formed on the piston. The sliding cylinder is sleeved on the lock column, and a clamping plate is arranged at the top end of the lock column; a compensation sealing ring is arranged on the compensation gasket; and rubber is arranged on the peripheries of the sliding cylinder and the lock cylinder and is tightly attached to the inner wall of the guide sleeve. The buffer unit comprises a buffer pad, a buffer cover and a buffer spring; the buffer spring is connected with the positioning rod in the guide sleeve through welding, and the other end of the buffer spring is connected with the buffer pad through welding. A concave bolt is arranged in the threaded hole in the piston, and the bottom of the concave bolt is in a semi-concave circular shape with the diameter being the same as that of the steel ball; and a sealing ring is arranged on the piston, and the sealing ring is closely attached to the concave bolt and the piston.

after the technical scheme is adopted, the utility model discloses following positive effect has:

(1) The utility model discloses buffer spring in the buffer unit that the uide bushing just set up on piston one side drives the buffer cap inwards along the locating lever after the atress to slide, can effectively lighten the mechanical impact that great kinetic energy brought when the stroke is ended soon of piston, avoids the direct contact of piston and uide bushing, reduces the damage that the hydro-cylinder brought because of inertia.

(2) The utility model discloses traditional sealing washer is compared to sealed compensation unit, and sealed effect is better, and sealed cycle is longer, produces wearing and tearing back at the compensation sealing washer surface, and compensation spring that compensation pad below compressed can promote the compensation sealing washer forward, will continue to fill by the clearance that wearing and tearing produced for the tight piston rod of compensation sealing washer laminating, exert sealed effect again.

(3) The utility model discloses steel ball in the raceway that sets up between piston and the piston rod can make the fine setting to the piston angle when piston and cylinder body inner wall cause the card pause or pause because the angle is not good to can alleviate the wearing and tearing of piston and cylinder body inner wall.

Drawings

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of the buffering unit of the present invention;

Fig. 3 is a schematic structural diagram of the sealing compensation unit of the present invention;

The reference numbers in the drawings are as follows: 1 is a cylinder body; 2 is a cylinder bottom; 3 is a piston; 4 is a piston rod; 5 is a guide sleeve; 6 is a bolt; 7 is a first oil port; 8 is a second oil port; 9 is a raceway; 10 is a steel ball; 11 is a concave bolt; 12 is a sealing ring; 13 is a buffer unit; 131 is a buffer pad; 132 is a buffer cover; 133 is a buffer spring; 134 is a positioning rod; 135 is a slideway; 14 is a sealing compensation unit; 141 is rubber; 142 is a lock cylinder; 143 is a slide cylinder; 144 is a compensation spring; 145 is a compensation pad; 146 is a compensating seal ring.

Detailed Description

(example 1)

Referring to fig. 1 to 3, the utility model provides a but fine setting area buffering and sealed automatic compensation's hydro-cylinder has cylinder body 1, cylinder bottom 2, piston 3 and piston rod 4, cylinder body 1 passes through welded fastening with cylinder bottom 2 and is connected, piston 3 installs on piston rod 4, piston 3 and piston rod 4 install in cylinder body 1 inner chamber, the side is equipped with first hydraulic fluid port 7 and second hydraulic fluid port 8 on cylinder body 1, cylinder body 1 front end is equipped with uide bushing 5, uide bushing 5 passes through bolt 6 fixed mounting on cylinder body 1, be equipped with sealed compensation unit 14 on the uide bushing 5 inner wall, be equipped with compensating spring 144 and compensation sealing washer 146 on the sealed compensation unit 14, set up the compensation pad 145 between compensation spring 144 and compensation sealing washer 146 additional, compensation pad 145 is the metal material, compensation pad 145 links to each other through the welding with compensation spring 144, the compensation pad 145 surface is equipped with a layer of silica gel, when compensation spring 144 is under the longest extension state, the compensating pad 145 does not exceed the guide sleeve 5, a sliding barrel 143 and a lock column 142 are arranged on the periphery of the compensating spring 144, the sliding barrel 143 is sleeved on the lock column 142, a clamping plate is arranged at the top end of the lock column 142, a compensating sealing ring 146 is arranged on the compensating pad 145, rubber 141 is arranged on the peripheries of the sliding barrel 143 and the lock column 142, the rubber 141 is tightly attached to the inner wall of the guide sleeve 5, the face, opposite to the piston 3, of the guide sleeve 5 is provided with buffer units 13, the number of the buffer units 13 is 4, the buffer units are uniformly distributed on the ring diameter of the guide sleeve 5, and each buffer unit 13 comprises a buffer pad 131, a buffer cover 132 and a; the buffer spring 133 is connected with a positioning rod 134 in the guide sleeve 5 through welding, the other end of the buffer spring 133 is connected with the buffer pad 131 through welding, a roller path 9 is arranged in the middle of the piston 3 connected with the piston rod 4, a threaded hole is formed in the piston 3 and communicated with the roller path 9, a steel ball 10 is installed in the roller path 9, the diameter of the steel ball 10 is the same as that of the roller path 9, the diameter of the steel ball 10 is smaller than that of a thread formed in the piston 3, a concave bolt 11 is arranged in the threaded hole in the piston 3, the bottom of the concave bolt 11 is in a semi-concave circular shape, the diameter of the bottom of the concave bolt is the same as that of the steel ball 9, a sealing.

The utility model discloses a theory of operation does: in the working process of the oil cylinder, when the movement angle between the piston 3 and the inner wall of the cylinder body 1 is not good, the steel balls 9 between the piston 3 and the piston rod 4 can finely adjust the angle between the piston 3 and the inner wall of the cylinder body 1, when the piston 3 and the piston rod 4 run to the end of the stroke, the buffer unit 13 arranged on the guide sleeve 5 achieves the purposes of reducing the speed of the piston 3 and lightening the mechanical impact with the cylinder body 1 by means of the acting force of the buffer spring 133 opposite to the movement direction of the piston 3, and when the compensation sealing ring 146 on the guide sleeve 5 is abraded, the compensation spring 144 in the sealing compensation unit 14 can push the compensation sealing ring 146 to move outwards to make up the gap generated by the previous abrasion.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (4)

1. A fine-adjustment oil cylinder with buffering and sealing automatic compensation is provided with a cylinder body (1), a cylinder bottom (2), a piston (3) and a piston rod (4), wherein the cylinder body (1) is fixedly connected with the cylinder bottom (2) through welding, the piston (3) is installed on the piston rod (4), the piston (3) and the piston rod (4) are installed in an inner cavity of the cylinder body (1), a first oil port (7) and a second oil port (8) are formed in the upper side edge of the cylinder body (1), a guide sleeve (5) is arranged at the front end of the cylinder body (1), and the guide sleeve (5) is fixedly installed on the cylinder body (1) through a bolt (6); the method is characterized in that: a sealing compensation unit (14) is arranged on the inner wall of the guide sleeve (5); a compensation spring (144) and a compensation sealing ring (146) are arranged on the sealing compensation unit (14); a compensation pad (145) is additionally arranged between the compensation spring (144) and the compensation sealing ring (146); a sliding cylinder (143) and a lock cylinder (142) are arranged on the periphery of the compensation spring (144); a buffer unit (13) is arranged on one surface of the guide sleeve (5) opposite to the piston (3); the number of the buffer units (13) is 4, and the buffer units are uniformly distributed on the diameter of the guide sleeve (5); a roller path (9) is arranged in the middle of the connection between the piston (3) and the piston rod (4); a threaded hole is formed in the piston (3), and the threaded hole is communicated with the roller path (9); and a steel ball (10) is arranged in the roller path (9), the diameter of the steel ball (10) is the same as that of the roller path (9), and the diameter of the steel ball (10) is smaller than the diameter of a thread hole formed in the piston (3).

2. The fine-adjustable oil cylinder with the buffer and the seal automatic compensation functions as claimed in claim 1, characterized in that: the sliding cylinder (143) is sleeved on the lock column (142), and a clamping plate is arranged at the top end of the lock column (142); a compensation sealing ring (146) is arranged on the compensation pad (145); rubber (141) are arranged on the peripheries of the sliding barrel (143) and the lock cylinder (142), and the rubber (141) is tightly attached to the inner wall of the guide sleeve (5).

3. the fine-adjustable oil cylinder with the buffer and the seal automatic compensation functions as claimed in claim 1, characterized in that: the buffer unit (13) comprises a buffer pad (131), a buffer cover (132) and a buffer spring (133); the buffer spring (133) is connected with the positioning rod (134) in the guide sleeve (5) through welding, and the other end of the buffer spring (133) is connected with the buffer pad (131) through welding.

4. the fine-adjustable oil cylinder with the buffer and the seal automatic compensation functions as claimed in claim 1, characterized in that: a concave bolt (11) is arranged in a threaded hole in the piston (3), and the bottom of the concave bolt (11) is in a semi-concave circular shape with the diameter being the same as that of the steel ball (10); and a sealing ring (12) is arranged on the piston (3), and the sealing ring (12) is closely attached to the concave bolt (11) and the piston (3).