CN212794768U - Hydraulic torque open spanner - Google Patents

Abstract

The utility model discloses a hydraulic torque open spanner, which comprises a force application plug-in, a driving box and a driving part; the force application plug-in comprises a ratchet cage sleeve, a non-return pawl, a ratchet and a ratchet cover plate; the driving part is matched with the force application plug-in unit through a driving box and pushes the ratchet wheel to rotate in a reciprocating manner; a non-return pawl is arranged on the inner side of the ratchet cover plate; the ratchet wheel is matched with the non-return pawl, clamped in the ratchet wheel cage and synchronously rotates along with the ratchet wheel cage; a first notch is formed in the ratchet wheel cage sleeve; a second notch is formed in the ratchet wheel; the first notch corresponds to the second notch in position; the ratchet type hydraulic torque wrench with the notch design can greatly improve the adaptability of the operating environment and the operating efficiency; meanwhile, the fastening or loosening action can be reliably and stably executed by using the non-return pawl structures which are annularly and uniformly distributed on the inner side of the ratchet cover plate in the ratchet cage sleeve.

Description

Hydraulic torque open spanner

Technical Field

The utility model relates to the technical field of machinery, especially, relate to hydraulic pressure moment of torsion open-ended spanner.

Background

For the installation and the disassembly of the pipeline nut, because of the structural limitation, the common hydraulic hollow wrench can not be used, and the installation and the disassembly of the common wrench can only be manually adopted. The manual mounting and dismounting mode has the following defects:

1. the efficiency is low: an operator needs to rotate the wrench at one time, which is laborious and time-consuming; it usually takes an unequal time of 5-40 minutes to fasten a pipe and requires at least 2 workers;

2. the torque cannot be accurately determined: when the stress application spanner is used, the difference is too large when the stress application spanner is manually installed, and the difference is related to the strength and the physical state of workers, so that the applied torque cannot be accurately ensured to reach the thread pretightening force required by pipeline sealing, and leakage or over-tightening caused by insufficient fastening force is easily generated;

3. when the torque is large and the space is small, manual installation becomes very difficult;

4. the lines and nuts are easily damaged: in order to save labor for the staff during manual installation, often can use afterburning spanner or use to strike the spanner and screw up and loosen, especially when using to strike the spanner, the vibrations that strike the spanner collide and cause the pipeline impaired or the nut warp easily to influence the life of pipeline and nut, finally cause the leakage.

Therefore, the hydraulic torque open spanner which is suitable for the pipeline nut working environment and reliable in operation needs to be invented.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the not enough of existence among the prior art, the utility model provides an adaptation pipe nut operational environment, the reliable hydraulic pressure moment of torsion open end spanner of operation.

The technical scheme is as follows: in order to achieve the above object, the hydraulic torque open spanner of the present invention comprises a force application insert and a driving part; the force application plug-in comprises a ratchet cage sleeve and a ratchet; the driving part is matched with the ratchet wheel cage sleeve to push the ratchet wheel to rotate in a reciprocating manner; the ratchet cage sleeve is covered with a ratchet cover plate; a non-return pawl is arranged on the inner side of the ratchet cover plate; the ratchet wheel is matched with the non-return pawl, clamped in the ratchet wheel cage and synchronously rotates along with the ratchet wheel cage; a first notch is formed in the ratchet wheel cage sleeve; a second notch is formed in the ratchet wheel; the first notch is correspondingly matched with the second notch in position.

Furthermore, a clamping piece is arranged at the first notch; one end of the clamping piece is nested and matched with the ratchet wheel cover plate and freely stretches out and draws back in the first gap; a first groove body is arranged on the side surface of the clamping piece; two ends of the first notch are respectively embedded with a guide pin and a positioning pin; the embedded end of the guide pin is in sliding fit with the first groove body; and the embedding path of the positioning pin is correspondingly matched with the telescopic path of the first groove body.

Furthermore, a second groove body is arranged in the ratchet wheel cage sleeve and is arranged on the inner side of the ratchet wheel cover plate; a non-return pawl is telescopically embedded in the second groove body; one end of the non-return pawl extending out of the second groove body is correspondingly meshed with the outer side of the ratchet wheel, and the ratchet wheel is driven to rotate in a single direction.

Furthermore, a plurality of second groove bodies are circumferentially and uniformly distributed on the inner side of the ratchet cover plate in the ratchet dragon sleeve and synchronously matched with the ratchet.

Furthermore, an elastic piece is connected and arranged between the bottom of the second groove body and the embedded end of the check pawl; the elastic piece drives the check pawl to press the ratchet wheel.

Further, the device also comprises a driving box; the force application plug-in and the driving part are both arranged on the driving box; and one end of the driving box, which is far away from the force application plug-in unit, is provided with a long handle-shaped bearing structure.

Has the advantages that: the utility model relates to a hydraulic torque open-end wrench,

comprises a force application insert and a driving component; the force application plug-in comprises a ratchet cage sleeve and a ratchet; the driving part is matched with the ratchet wheel cage sleeve to push the ratchet wheel to rotate in a reciprocating manner; the ratchet cage sleeve is covered with a ratchet cover plate; a non-return pawl is arranged on the inner side of the ratchet cover plate; the ratchet wheel is matched with the non-return pawl, clamped in the ratchet wheel cage and synchronously rotates along with the ratchet wheel cage; a first notch is formed in the ratchet wheel cage sleeve; a second notch is formed in the ratchet wheel; the first notch is correspondingly matched with the second notch in position; the hydraulic wrench with the notch design can greatly improve the adaptability of the operating environment and the operating efficiency; meanwhile, the fastening action can be reliably and stably executed by using the non-return pawl structures which are circumferentially and uniformly distributed on the inner side of the ratchet cover plate in the ratchet cage sleeve; the hydraulic torque open spanner is suitable for the pipeline nut operation environment, is reliable in operation, saves labor cost and can be used in narrow and small space occasions.

Drawings

FIG. 1 is a schematic view of a construction pipeline structure;

FIG. 2 is a schematic diagram of the overall structure of a hydraulic torque open spanner;

FIG. 3 is a schematic view of a force application insert;

fig. 4 is a schematic view of the pawl and ratchet configuration.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

A hydraulic torque open spanner, as shown in fig. 2, comprising a force application insert 1 and a driving part 3; the force application plug-in 1 comprises a ratchet cage 7 and a ratchet 5; the driving part 3 is matched with the ratchet cage 7 to push the ratchet 5 to rotate back and forth; a ratchet cover plate 8 is covered on the ratchet cage 7; a non-return pawl 4 is arranged on the inner side of the ratchet cover plate 8; the ratchet wheel 5 is matched with the non-return pawl 4, clamped in the ratchet wheel cage 7 and synchronously rotates along with the ratchet wheel cage 7; a first gap 81 is formed in the ratchet wheel cage 7; a second notch 51 is arranged on the ratchet wheel 5; the first notch 81 and the second notch 51 are correspondingly matched in position, so that a pipeline and a nut part can be clamped in any position to carry out fastening operation without being sleeved in from one end of the pipeline and sliding to be transferred to an operation area; in actual production, two sections of pipelines are often required to be connected, for example, as shown in fig. 1, a connecting nut a2 and a compression nut A3 are adopted to connect a first pipeline a1 and a second pipeline a4, and other equipment structures restrict an operation space around the pipelines, so that a traditional closed-loop hydraulic wrench needs to be firstly sleeved on the pipelines and then moved to the position of the nut along the length direction of the pipelines, and the traditional closed-loop hydraulic wrench is complex in operation and is easily influenced by environmental factors, so that the operation cannot be smooth; therefore, the hydraulic wrench adopting the notch design can greatly improve the adaptability of the operating environment and the operating efficiency;

the first notch 81 is provided with a clamping piece 9; one end of the clamping piece 9 is nested and matched with the ratchet cover plate 8 and freely stretches and retracts in the first gap 81; when the wrench is used for installation and disassembly, the clamping piece 9 retracts, and the wrench is convenient for a pipeline near the nut to enter the ratchet wheel 5 in an opening mode, so that the ratchet wheel 5 can be rapidly matched with the connecting nut; before the rotary fastening operation is carried out, the clamping piece 9 extends out to seal the first notch 81, so that the wrench can be prevented from slipping in the operation process, and the structural strength near the first notch 81 is improved;

a first groove body 91 is arranged on the side surface of the clamping piece 9; the two ends of the first notch 81 are respectively embedded with a guide pin 10 and a positioning pin 11; the embedded end of the guide pin 10 is in sliding fit with the first groove body 91; the embedding path of the positioning pin 11 is correspondingly matched with the telescopic path of the first groove body 91; the guide pin 10 has the function of limiting the moving track of the first groove body 91, so that the reliability of the telescopic action of the clamping piece 9 is improved; the positioning pin 11 can be embedded into the first groove 91 after the clamping piece 9 extends out, so that the retraction action is limited, and the position stability of the clamping piece 9 in the operation process of fastening by using a wrench is ensured.

A second groove body 82 is arranged on the inner side of the ratchet cover plate 8 in the ratchet cage 7; a non-return pawl 4 is embedded in the second groove body 82 in a telescopic manner; one end of the non-return pawl 4 extending out of the second groove body 82 is correspondingly meshed with the outer side of the ratchet wheel 5, so that the ratchet wheel 5 is driven to rotate in a single direction; when the ratchet wheel 5 moves forwards in the ratchet wheel cage 7, the ratchet wheel 5 synchronously rotates along with the ratchet wheel cage 7 under the action of the check pawl 4, when an oil cylinder in the driving part returns, the ratchet wheel 5 does not move, the check pawl 4 returns along with the ratchet wheel cage 7, the ratchet wheel rotates in a reciprocating mode so as to drive the nut to rotate, in order to ensure that torque is effectively transmitted when the synchronous rotation is carried out, and meanwhile, the check pawl 4 is effectively spread by the ratchet wheel 5 when the check pawl 4 returns, the check pawl 4 is designed into an irregular tooth shape as shown in the attached drawing 4, so that the stress direction during the returning is consistent with the sliding direction in the second groove body 82;

as shown in the attached figure 3, according to the tooth shape of the non-return pawl 4, when the ratchet cage 7 drives the ratchet cover plate 8 to rotate anticlockwise, the non-return pawl 4 can block the ratchet 5, so that the connecting nut also synchronously rotates to realize fastening; when the ratchet cage 7 drives the ratchet cover plate 8 to rotate clockwise, the non-return pawl 4 retracts under the reaction force of the ratchet 5, so that the ratchet cage 7 can smoothly return to the initial position; the fastening of the connecting bolt can be completed by the driving member 3 by repeating the steps of fastening and returning to the initial position.

The plurality of second groove bodies 82 are annularly and uniformly distributed on the inner side of the ratchet cover plate 8 in the ratchet cage 7 and synchronously matched with the ratchet 5; the design of three groups of non-return pawls 4 is shown in the attached drawing 3, the multipoint driving can disperse stress to reduce structural wear, and when a certain non-return pawl 4 runs to the position of the second notch 51, the ratchet wheel 5 is still stressed so as to apply pretightening force as usual, so that the fastening action is always performed smoothly; meanwhile, a blocking groove structure (not shown in the figure) is arranged on the ratchet cover plate 8, so that when the second gap 51 passes through any one non-return pawl 4, the non-return pawl 4 is prevented from being separated from the second gap 51;

an elastic piece 6 is connected and arranged between the bottom of the second groove body 82 and the embedded end of the check pawl 4; the elastic piece 6 drives the check pawl 4 to press the ratchet wheel 5, so that the telescopic adjustment of the check pawl 4 is quicker, a certain pressing force can be always kept between the check pawl 4 and the ratchet wheel 5, and the reliability of occlusion transmission is improved; the elastic member 6 may be embodied in a spring structure.

Also comprises a driving box 2; the force application insert 1 and the driving part 3 are both arranged on the driving box 2; one end of the driving box 2, which is far away from the force application plug-in unit 1, is provided with a long handle-shaped bearing structure, so that the balance of stress positions of reaction force arms is ensured, and reaction stress points are easier to find.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims (6)

1. Hydraulic pressure moment of torsion open-end wrench, its characterized in that: comprises a force application insert (1) and a driving part (3);

the force application insert (1) comprises a ratchet cage sleeve (7) and a ratchet (5); the driving part (3) is matched with the ratchet wheel cage sleeve (7) to push the ratchet wheel (5) to rotate back and forth; a ratchet cover plate (8) is covered on the ratchet cage sleeve (7); a non-return pawl (4) is arranged on the inner side of the ratchet cover plate (8); the ratchet wheel (5) is matched with the non-return pawl (4), clamped in the ratchet wheel cage sleeve (7) and synchronously rotates along with the ratchet wheel cage sleeve (7); a first gap (81) is formed in the ratchet wheel cage sleeve (7); a second notch (51) is arranged on the ratchet wheel (5); the first notch (81) is matched with the second notch (51) correspondingly.

2. The hydraulic torque open spanner according to claim 1, wherein: a clamping piece (9) is arranged at the first notch (81); one end of the clamping piece (9) is nested and matched with the ratchet wheel cover plate (8) and freely stretches and retracts in the first gap (81); a first groove body (91) is arranged on the side surface of the clamping piece (9); a guide pin (10) and a positioning pin (11) are respectively embedded at two ends of the first notch (81); the embedded end of the guide pin (10) is in sliding fit with the first groove body (91); the embedding path of the positioning pin (11) is correspondingly matched with the telescopic path of the first groove body (91).

3. The hydraulic torque open spanner according to claim 1, wherein: a second groove body (82) is arranged on the inner side of the ratchet cover plate (8); the check pawl (4) is telescopically embedded in the second groove body (82); one end of the check pawl (4) extending out of the second groove body (82) is correspondingly meshed with the outer side of the ratchet wheel (5) to drive the ratchet wheel (5) to rotate in a single direction.

4. The hydraulic torque open spanner according to claim 3, wherein: the second groove bodies (82) are circumferentially and uniformly distributed on the inner side of the ratchet cover plate (8) and synchronously matched with the ratchet (5).

5. The hydraulic torque open spanner according to claim 3, wherein: an elastic piece (6) is connected between the bottom of the second groove body (82) and the embedded end of the check pawl (4); the elastic piece (6) drives the check pawl (4) to press the ratchet wheel (5).

6. The hydraulic torque open spanner according to claim 1, wherein: also comprises a driving box (2); the force application plug-in (1) and the driving part (3) are both arranged on the driving box (2); one end of the driving box (2) far away from the force application plug-in (1) is provided with a long handle-shaped bearing structure.

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