CN219139521U

CN219139521U - Double-acting gear rack swinging cylinder

Info

Publication number: CN219139521U
Application number: CN202223184711.8U
Authority: CN
Inventors: 秦铮铮; 余坚; 何毅
Original assignee: Zhejiang Sinpous Measurement And Control Technology Co ltd
Current assignee: Zhejiang Sinpous Measurement And Control Technology Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-06-06
Anticipated expiration: 2032-11-29

Abstract

The utility model relates to a double-acting gear rack swinging cylinder, which belongs to the technical field of swinging cylinders and comprises a gear box, wherein first cylinder bodies are arranged on two sides of the gear box, a gear and a first rack matched with the gear are arranged in the gear box, first piston shaft parts are extended from two ends of the first rack, the tail ends of the first piston shaft parts are connected with first pistons, the first pistons are arranged in the first cylinder bodies in a sliding manner, first oil cylinder covers are arranged at the head end ports and the tail end ports of the first cylinder bodies, and a first oil port, a second oil port, a third oil port and a fourth oil port which are communicated with the first cylinder bodies are respectively arranged on the four first oil cylinder covers; according to the utility model, the acting force of the oil cylinder can be effectively improved without changing the diameter of the cylinder body, and meanwhile, the first oil cylinder covers are arranged at the head and tail ports in the first cylinder body, so that the stability and reliability of the first piston shaft part in the piston making action can be improved.

Description

Double-acting gear rack swinging cylinder

Technical Field

The utility model relates to the technical field of oscillating cylinders, in particular to a double-acting rack and pinion oscillating cylinder.

Background

The gear rack swinging oil cylinder drives the gear through the rack to convert the reciprocating motion of the hydraulic cylinder into forward and reverse swinging rotation of the gear, and meanwhile, the thrust of the reciprocating cylinder is converted into the output torque of the gear shaft, so that the hydraulic cylinder has wide application in the field of mechanical production.

The patent of publication No. CN109578362A discloses a no sealed rack and pinion oscillating hydraulic cylinder, it includes the cylinder body of controlling horizontal extension, be provided with the rack axle of controlling horizontal extension in the cylinder body, both ends all are connected with the movable seat about the rack axle, cylinder body left and right sides end port shutoff is connected with the fixing base, open on the fixing base at both ends have with the hydraulic cavity body be linked together the liquid through-hole, set up to liquid through-hole A and liquid through-hole B respectively, when liquid through-hole A advances oil, liquid through-hole B goes out oil, the movable seat promotes the rack axle action by liquid through-hole A to liquid through-hole B, the effort of hydro-cylinder equals liquid through-hole A's oil pressure, when the effort that needs to increase the hydro-cylinder, can increase the diameter of cylinder body generally, but under some special circumstances, the effort that needs to increase the hydro-cylinder under the prerequisite that does not change cylinder body diameter.

Disclosure of Invention

The utility model aims to overcome the defects and the shortcomings of the prior art and provides a double-acting rack and pinion swinging cylinder.

The technical scheme adopted by the utility model is as follows: the utility model provides a double-acting rack and pinion swinging cylinder, its is including the gear box, the gear box both sides all are provided with first cylinder body, be provided with the gear in the gear box and with the first rack of gear adaptation, first piston shaft portion has all been extended at first rack both ends, the end-to-end connection of first piston shaft portion has first piston, first piston slides and sets up in first cylinder body, the head end port and the terminal port of first cylinder body all are provided with first cylinder cap, four be provided with first hydraulic fluid port, second hydraulic fluid port, third hydraulic fluid port and the fourth hydraulic fluid port with first cylinder body intercommunication respectively on the first cylinder cap.

The gear box is characterized by further comprising a second rack arranged in the gear box and adapted to the gear and second cylinder bodies arranged on two sides of the gear box, second piston shaft portions are respectively extended at two ends of the second rack, second pistons which are arranged on the second cylinder bodies in a sliding mode are connected with the tail ends of the second piston shaft portions, second oil cylinder covers are respectively arranged at the head end ports and the tail end ports of the second cylinder bodies, and oil ports communicated with the second cylinder bodies are respectively arranged on the four second oil cylinder covers.

The tail ends of the first piston shaft part and the second piston shaft part are respectively provided with an external thread section, and the first piston and the second piston are respectively provided with an internal thread section matched with the external thread section.

The first sealing groove, the second sealing groove and the third sealing groove are sequentially formed in the circumferential outer walls of the first piston and the second piston, and the first sealing ring is arranged in the first sealing groove, the second sealing groove and the third sealing groove.

And shaft shoulders are arranged on the first piston shaft part and the second piston shaft part, and the diameter of each shaft shoulder is larger than that of the external thread section.

The first cylinder body and the second cylinder body are both provided with flange parts which are connected with the gear box through bolts.

The first oil cylinder cover comprises a third oil cylinder cover welded with the tail end port of the first cylinder body and a fourth oil cylinder cover in threaded connection with the head end port of the first cylinder body.

The third oil cylinder cover comprises a welding part which is abutted against the end face of the tail end of the first cylinder body and an embedded part which stretches into the first cylinder body.

The fourth oil cylinder cover comprises a limiting part and a plurality of sealing groove parts, wherein the limiting part is in butt joint with the end face of the head end of the first cylinder body, the sealing groove parts are arranged on the outer wall of the fourth oil cylinder cover, and a second sealing ring is arranged in the sealing groove parts.

The fourth cylinder cap circumference inner wall is provided with a plurality of fourth seal grooves, be provided with the third sealing washer in the fourth seal groove.

The beneficial effects of the utility model are as follows: according to the utility model, the first oil cylinder covers are respectively arranged at the head end port and the tail end port of the first cylinder body, the first oil ports, the second oil ports, the third oil ports and the fourth oil ports which are communicated with the first cylinder body are respectively arranged on the four first oil cylinder covers, when the first oil ports and the third oil ports are used for simultaneously feeding oil and the second oil ports and the fourth oil ports are used for simultaneously discharging oil, the first piston pushes the first piston shaft part to move from the first oil ports to the fourth oil ports, at the moment, the acting force in the oil cylinder is equivalent to the oil pressure in the first oil ports plus the oil pressure in the third oil ports, the acting force of the oil cylinder is effectively improved under the condition that the diameter of the cylinder body is not changed, and meanwhile, the head end port and the tail end port in the first cylinder body are respectively provided with the first oil cylinder covers, so that the stability and the reliability of the first piston shaft part during the piston action can be improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that it is within the scope of the utility model to one skilled in the art to obtain other drawings from these drawings without inventive faculty.

FIG. 1 is a schematic diagram of a first embodiment;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a schematic diagram of a second embodiment;

FIG. 4 is an enlarged view of FIG. 3 at B;

fig. 5 is a schematic view of a piston in accordance with the present utility model.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.

It should be noted that, in the embodiments of the present utility model, all the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the "first" and "second" are only used for convenience of expression, and should not be construed as limiting the embodiments of the present utility model, and the following embodiments are not described one by one.

The terms of direction and position in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer only to the direction or position of the drawing. Accordingly, directional and positional terms are used to illustrate and understand the utility model and are not intended to limit the scope of the utility model.

Embodiment one:

as shown in fig. 1 and fig. 2, a double-acting rack and pinion oscillating cylinder, it includes gear box 1, gear box 1 both sides all are provided with first cylinder body 2, are provided with the slip passageway in the first cylinder body 2, be provided with gear 3 and with the first rack 4 of gear 3 adaptation in the gear box 1, gear 3 meshes with first rack 4, this is single rack type rack and pinion oscillating cylinder, first piston shaft 5 is all extended at first rack 4 both ends, the end connection of first piston shaft 5 has first piston 6, first piston 6 slides and sets up in first cylinder body 2, and the slip sets up in the slip passageway promptly, head end port and the terminal port of first cylinder body 2 all are provided with first cylinder cap 7, four be provided with first hydraulic fluid port 71, second hydraulic fluid port 72, third hydraulic fluid port 73 and fourth hydraulic fluid port 74 with first cylinder body 2 intercommunication on the first cylinder cap 7 respectively, when first hydraulic fluid port 71 advances oil port 73 and third hydraulic fluid port 73 simultaneously and second hydraulic fluid port 74 simultaneously, the end port 72 pushes away hydraulic fluid port 6 simultaneously with fourth hydraulic fluid port 74, can be moved by first cylinder body 5 simultaneously in order to change the diameter and the piston fluid cylinder body 5 simultaneously, the piston is moved in order to the first cylinder cap 7 is moved to the same place in order to the first cylinder body has the diameter is smooth with the first hydraulic fluid port, the piston fluid cylinder cap 7 is moved simultaneously.

Embodiment two:

as shown in fig. 3 to 5, a dual rack type rack and pinion oscillating cylinder is distinguished from the embodiment in that the oscillating cylinder further comprises a second rack 8 which is arranged in the gear box 1 and is matched with the gear 3, and second cylinder bodies 9 which are arranged at two sides of the gear box 1, in the embodiment, two cylinders are respectively arranged at two sides of the gear box 1, the gear 3 is meshed with the two racks, two ends of the second rack 8 are respectively extended with a second piston shaft 10, the tail end of the second piston shaft 10 is connected with a second piston 11 which is slidably arranged at the second cylinder body 9, a first end port and a tail end port of the second cylinder body 9 are respectively provided with a second oil cylinder cover 12, four oil ports 121 which are communicated with the second cylinder body 9 are respectively arranged on the oscillating cylinder, and are respectively set as A1, A2, A3, A4, B1, B2, B3 and B4, when the oil is simultaneously fed into the cylinders A1, A3, B2 and B4, and the oil is simultaneously discharged from the cylinders A2 and B4, the diameter of the oil cylinders is not equal to the diameter of the oil cylinders A1, B2 and B4, and the acting force is not equal to the acting force is changed.

The first piston shaft part 5 and the second piston shaft part 10 have the same structure, the tail ends of the first piston shaft part 5 and the second piston shaft part are provided with external thread sections, the first piston 6 and the second piston 11 have the same structure, and the first piston shaft part and the second piston shaft part are provided with internal thread sections matched with the external thread sections, and are connected through threads, so that the assembly and the disassembly are convenient; the first seal groove 101, the second seal groove 102 and the third seal groove 103 are sequentially arranged on the circumferential outer walls of the first piston 6 and the second piston 11, the first seal groove 101, the second seal groove 102 and the third seal groove 103 are internally provided with first seal rings, multiple seals are formed, leakage occurs in cavities on two sides of the piston when the piston acts, pressure relief is caused, and the performance of the swing cylinder is affected.

The first piston shaft part 5 and the second piston shaft part 10 are respectively provided with a shaft shoulder part 13, the diameter of the shaft shoulder parts 13 is larger than that of the external thread section, oil leakage from the joint of the piston and the piston shaft part is avoided, the threaded connection rotation transition of the piston and the piston shaft part is also avoided, and the assembly is convenient.

The first cylinder body 2 and the second cylinder body 9 are both provided with flange parts 201 which are connected with the gear box 1 through bolts, so that disassembly, assembly, maintenance and repair are convenient, for example, the sealing ring is invalid, and the sealing ring can be replaced in time.

The first oil cylinder cover 7 comprises a third oil cylinder cover 14 welded with the end port of the first cylinder body 2 and a fourth oil cylinder cover 15 in threaded connection with the head end port of the first cylinder body 2, the first cylinder body 2 and the third oil cylinder cover 14 are welded into a whole, assembly is simplified, tightness is ensured, and the fourth oil cylinder cover 15 is in threaded connection for convenient assembly; the third oil cylinder cover 14 comprises a welding part 141 which is abutted against the end face of the tail end of the first cylinder body 2 and an embedded part 142 which stretches into the first cylinder body 2, and the structure can improve the tightness of the joint of the third oil cylinder cover 14 and the first cylinder body 2; the fourth oil cylinder cover 15 includes a limiting portion 151 that abuts against the end face of the head end of the first cylinder body 2, and a plurality of sealing groove portions 152 that are disposed on the outer wall of the fourth oil cylinder cover 15, and a second sealing ring is disposed in the sealing groove portions 152; the limit part 151 is a flange arranged at one end of the fourth oil cylinder cover 15, a plurality of fourth sealing grooves 153 are formed in the inner wall of the periphery of the fourth oil cylinder cover 15, third sealing rings are arranged in the fourth sealing grooves 153, the relative tightness between the chambers at two sides of the piston is good due to the adoption of the structure, mutual leakage in the sliding process of the piston is avoided, and the performance of the swing cylinder is improved.

The foregoing disclosure is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.

Claims

1. The utility model provides a double-acting rack and pinion oscillating cylinder, its characterized in that, including gear box (1), gear box (1) both sides all are provided with first cylinder body (2), be provided with gear (3) in gear box (1) and with first rack (4) of gear (3) adaptation, first piston shaft portion (5) all extend at first rack (4) both ends, the end-to-end connection of first piston shaft portion (5) has first piston (6), first piston (6) slip sets up in first cylinder body (2), the head end port and the terminal port of first cylinder body (2) all are provided with first cylinder cap (7), four be provided with first hydraulic fluid port (71), second hydraulic fluid port (72), third hydraulic fluid port (73) and fourth hydraulic fluid port (74) with first cylinder body (2) intercommunication on first cylinder cap (7) respectively.

2. The double-acting gear rack swinging cylinder according to claim 1, further comprising a second rack (8) arranged in the gear box (1) and matched with the gear (3) and second cylinder bodies (9) arranged on two sides of the gear box (1), wherein two ends of the second rack (8) are respectively extended with a second piston shaft part (10), the tail end of the second piston shaft part (10) is connected with a second piston (11) which is slidably arranged on the second cylinder bodies (9), the head end port and the tail end port of the second cylinder bodies (9) are respectively provided with a second oil cylinder cover (12), and oil ports (121) communicated with the second cylinder bodies (9) are respectively arranged on the four second oil cylinder covers (12).

3. A double acting rack and pinion oscillating cylinder according to claim 2, characterized in that the ends of the first piston shaft part (5) and the second piston shaft part (10) are provided with male thread segments, and the first piston (6) and the second piston (11) are provided with female thread segments adapted to the male thread segments.

4. The double-acting rack and pinion oscillating cylinder according to claim 2, wherein the circumferential outer walls of the first piston (6) and the second piston (11) are respectively provided with a first sealing groove (101), a second sealing groove (102) and a third sealing groove (103) in sequence, and first sealing rings are respectively arranged in the first sealing groove (101), the second sealing groove (102) and the third sealing groove (103).

5. A double acting rack and pinion oscillating cylinder according to claim 3, characterized in that the first piston shaft part (5) and the second piston shaft part (10) are provided with shoulder parts (13), the diameter of the shoulder parts (13) being larger than the diameter of the male threaded section.

6. A double acting rack and pinion oscillating cylinder according to claim 2, characterized in that the first cylinder body (2) and the second cylinder body (9) are both provided with flange parts (201) in bolted connection with the gearbox (1).

7. A double acting rack and pinion oscillating cylinder according to claim 1, characterized in that the first cylinder head (7) comprises a third cylinder head (14) welded to the end port of the first cylinder body (2) and a fourth cylinder head (15) screwed to the head port of the first cylinder body (2).

8. A double acting rack and pinion oscillating cylinder according to claim 7, characterized in that the third cylinder head (14) comprises a welded portion (141) abutting against the end face of the first cylinder body (2) and an embedded portion (142) extending into the interior of the first cylinder body (2).

9. The double-acting rack and pinion oscillating cylinder according to claim 7, wherein the fourth cylinder head (15) comprises a limiting part (151) abutted against the end face of the head end of the first cylinder body (2) and a plurality of sealing groove parts (152) arranged on the outer wall of the fourth cylinder head (15), and a second sealing ring is arranged in the sealing groove parts (152).

10. A double-acting rack and pinion oscillating cylinder according to claim 7, characterized in that the fourth cylinder head (15) is provided with a number of fourth sealing grooves (153) in the circumferential inner wall, a third sealing ring being provided in the fourth sealing grooves (153).