CN211560189U - Strutting pressurizer - Google Patents

Abstract

For solving the deficiencies of the prior art, the utility model provides a strut presser, include: the device comprises a strip-shaped rack, a first acting arm fixed on one side of the rack, a rack moving base and a second acting arm which is fixed on the rack moving base and is designed in parallel with the first acting arm. The rack motion base includes: the ratchet cover plate base. The ratchet cover plate base is provided with a rack through groove matched with the rack, and a rotating mechanism is arranged on the side of the toothed belt facing the rack. And a gear is rotatably arranged in the rotating mechanism. The gear teeth of the gear are in toothed connection with the rack, and the gear shaft of the gear extends to the outside of the rotating mechanism. The utility model discloses can realize strutting simultaneously and the pressurization effect, avoid the not convenient part of change instrument, and realize fixing a position in real time and prevent the anti-skidding function through adding the ratchet of establishing. And simultaneously, the utility model discloses an install spanner additional and holder can change the internal stress of rotation that originally bore by the pinion rack into bearing by holder, has improved the life of pinion rack greatly.

Description

Strutting pressurizer

Technical Field

The utility model belongs to the technical field of medical equipment technique and specifically relates to a struts presser.

Background

During surgery, it is a very common practice to open or close pressure on a wound/incision/adjacent bone. In the prior art, a strutting device is generally adopted for strutting operation, and a pressurizing device is adopted for pressurizing operation. Wherein the spreading means generally comprise two reaction arms which can be moved away from each other, and the pressure means generally comprise two jaws which are connected by a resilient means. The prior device has the following problems: 1. the distraction and compression are sometimes performed sequentially at the same location, and replacement of the device can enlarge the wound of the patient and is not conducive to recovery of the patient. 2. The existing strutting and pressurizing device lacks of a positioning function, needs the self-force application and positioning of an operation operator, and is inconvenient for the operation. 3. The existing strutting and pressurizing device, particularly the strutting and pressurizing device with a rack, can apply rotary internal stress to the rack in the working process, is not beneficial to strutting or pressurizing operation on the one hand, and easily causes the fracture of the rack on the other hand, thereby reducing the service life of the device.

SUMMERY OF THE UTILITY MODEL

For solving the deficiencies of the prior art, the utility model provides a strut presser, include: the device comprises a strip-shaped rack, a first acting arm fixed on one side of the rack, a rack moving base and a second acting arm which is fixed on the rack moving base and is designed in parallel with the first acting arm.

Further, the rack motion base includes: the ratchet cover plate base is sleeved outside the rack. The ratchet cover plate base is provided with a rack through groove matched with the rack, and a rotating mechanism is arranged on the side of the toothed belt facing the rack. And a gear is rotatably arranged in the rotating mechanism. The gear teeth of the gear are in toothed connection with the rack, and the gear shaft of the gear extends to the outside of the rotating mechanism.

Furthermore, one side of the rack facing the first acting arm is provided with a first mounting protrusion. And a first mounting groove matched with the first mounting protrusion is formed in the first acting arm.

Furthermore, the ratchet cover plate base is arranged on one side facing the second action arm. And a second mounting groove matched with the second mounting protrusion is formed in the second acting arm.

Furthermore, the first installation bulge and the first installation groove and the second installation bulge and the second installation groove are fixed through screws or welded.

Furthermore, a gasket is sleeved outside the gear shaft. And the side wall of the gasket is connected with the gear side wall fixed shaft.

Furthermore, the rack is a rack with teeth on two sides, and the tooth grooves are a gear tooth groove and a ratchet tooth groove respectively. The rack motion base further comprises: the ratchet cover plate, the ratchet knob and the ratchet are arranged on the opposite side of the rotating mechanism, and a ratchet through groove communicated with the rack through groove is formed in the opposite side of the rotating mechanism. And ratchet shaft grooves are formed in the top ends of the side walls of the ratchet cover plate base, which are positioned on two sides of the ratchet through groove.

Furthermore, one end of each ratchet is fixed on two opposite sides of the shaft surface of the ratchet shaft, and the other end of each ratchet penetrates through the corresponding ratchet through groove to be in toothed connection with the rack. The ratchet shaft is arranged in the ratchet shaft groove. One end of the ratchet shaft is provided with a spring fixing groove at one side back to the through groove of the rack, and the other end of the ratchet shaft is provided with a polygonal fixing column extending to the outside of the through groove of the ratchet. A first threaded hole is formed in the middle shaft of the polygonal fixing column. The ratchet knob is sleeved outside the polygonal fixing column through a polygonal hole formed in the middle shaft, and the first fixing screw penetrates through the polygonal hole to be in threaded connection with the first threaded hole. The screw cap of the first fixing screw is wider than the aperture of the polygonal hole.

Furthermore, one side of the ratchet cover plate, which faces the ratchet shaft, is provided with an arc groove matched with the ratchet shaft, and the arc groove is fixed at the ratchet through groove of the ratchet cover plate base through a second fixing screw. A first spring and a limiting steel ball are clamped between the ratchet cover plate and the spring fixing groove.

Further, the spreading pressurizer comprises a wrench for driving the gear to rotate.

Furthermore, a polygonal groove is formed in the top of the gear extending to the outside of the connecting mechanism of the holder. The wrench includes: the wrench handle and the screwdriver rod are fixedly connected in an integrated or detachable mode. One end of the screwdriver rod facing the gear shaft is provided with a polygonal bulge matched with the polygonal groove.

Furthermore, one end of the wrench handle facing the screwdriver rod is provided with a slot matched with the screwdriver rod. A first bolt hole communicated with the slot is formed in the slot on the wrench grip. And a second bolt hole is formed in the position, corresponding to the first bolt hole, of the screwdriver rod. The first bolt hole and the second bolt hole are fixed through bolts.

Furthermore, the ratchet cover plate base is provided with a connecting mechanism of the holder which is rotationally connected with the gear shaft. The handle is sleeved outside the screwdriver rod. The holder includes: a wrench sleeve handle, a holder grip and a grip fastening cover.

Furthermore, one end of the wrench sleeve handle is provided with a connecting groove matched with the connecting mechanism of the holder, and the other end of the wrench sleeve handle is provided with a polygonal connecting column of the holder grip. The top end of the handle connecting column of the holder is provided with a handle fastening cover connecting column. The wrench sleeve handle and the grip fastening cover are coaxially provided with through holes matched with the outer diameter of the screwdriver rod at the middle shaft.

Further, the holder grip includes a long handle type grip portion. One end of the grip part facing the wrench sleeve handle is provided with a connecting hole matched with the polygonal grip connecting column of the holder.

Furthermore, handle fastening lid and handle fastening lid spliced pole assorted screw thread.

Furthermore, a locking groove is formed in the connecting mechanism of the holder. The holder includes: the unlocking ejector pin, the locking pin spring, the locking pin cover plate and the ejector pin return spring. The wrench sleeve handle is provided with a locking pin sliding groove.

Further, the locking pin includes: locking pin insert, toper unblock sliding surface. The conical unlocking sliding surface is in contact fit with the end of the unlocking thimble to realize the opening and closing of the holder and the rack moving base. The locking pin is tightly pressed and connected with the locking pin cover plate through a locking pin spring to realize self-locking. The locking pin cover plate is fixed with the wrench sleeve handle through a third fixing screw.

Furthermore, the wrench sleeve handle is arranged in a thimble return spring through groove communicated with the locking pin sliding groove. An unlocking thimble through groove is formed in the handle of the holder.

Furthermore, one end of the unlocking thimble is provided with an unlocking thimble end which penetrates through the thimble return spring through groove and is pressed on the conical unlocking sliding surface, and the other end of the unlocking thimble penetrates through the unlocking thimble through groove and is fixed with the button. The outer diameter of the end of the unlocking thimble is smaller than that of the unlocking thimble, and the first limiting ring is sleeved with the thimble return spring through groove in a sliding connection mode. And an ejector pin return spring is clamped between the first limiting ring and the bottom surface of the ejector pin return spring through groove.

Furthermore, the unlocking ejector pin is fixedly connected with the second limiting ring and is in sliding connection with the unlocking ejector pin through groove. And an unlocking thimble limiting groove is formed in one side, facing the unlocking thimble, of the wrench sleeve handle. The unlocking thimble penetrates through the unlocking thimble limiting groove and is in sliding connection with the unlocking thimble limiting groove.

The utility model discloses one in the following advantage has at least:

1. the utility model discloses can realize strutting simultaneously and the pressurization effect, avoid the not convenient part of change instrument, and can realize fixing a position in real time and prevent the anti-skidding function through adding the ratchet of establishing.

2. The utility model discloses an install spanner additional and a holder, can change the internal stress of rotation that bears originally by the rack and bear by a holder, improved the life of rack greatly.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural view of the distraction pressurizer of the utility model.

Fig. 2 is a schematic view of an assembly structure of the rack and the first acting arm of the present invention.

Fig. 3 is a schematic view of the assembly structure of the motion base and the second acting arm of the present invention.

Fig. 4 is a schematic view of an assembly structure of the wrench of the present invention.

Fig. 5 is a schematic view of the assembly structure of the positioning handle of the present invention.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

Example 1

A distraction pressurizer, as shown in fig. 1, comprising: the device comprises a strip-shaped rack 1, a first acting arm 2 fixed on one side of the rack 1, a rack moving base 3 moving along the rack 1, and a second acting arm 4 fixed on the rack moving base 3 and designed in parallel with the first acting arm 2. The rack movement base 3 includes: the ratchet cover plate base 301 is sleeved outside the rack 1. The ratchet cover base 301 is provided with a rack through slot 311 matching the rack 1, and a rotation mechanism 312 on the toothed belt side facing the rack 1. A gear 313 is rotatably mounted in the rotating mechanism 312. The gear teeth 3131 of the gear 313 are in gear contact with the rack 1, and the gear shaft 3132 thereof extends to the outside of the rotating mechanism 312.

The use process of the device is as follows: the first and second active arms 2 and 4 are first fixed to the wound/incision on either side or adjacent bone. Then, the gear shaft 3132 is rotated by the portion of the gear shaft 3132 extending to the outside of the rotating mechanism 312, and the gear teeth 3131 on the gear shaft 3132 are rotated with respect to the rack bar 1, so that the ratchet cover base 301 is moved left and right along the rack bar 1 and with respect to the rack bar 1 by the rotating mechanism 312 rotatably connected to the gear 313. Since the first acting arm 2 is fixed with the rack 1 and the second acting arm 3 is fixed with the ratchet cover base 301, when the ratchet cover base 301 moves left and right along the rack 1 and relative to the rack 1, the first acting arm 2 and the second acting arm 4 can move apart or close to each other, so that the separation or pressurization operation of the wound/incision or the adjacent bones is realized.

Example 2

Based on the distracting presser described in embodiment 1, as shown in fig. 1 to 3, the side of the rack 1 facing the first action arm 2 is provided with a first mounting projection 101. The first acting arm 2 is provided with a first mounting groove 201 matched with the first mounting protrusion 101. The ratchet cover base 301 is provided on the side facing the second actuating arm 4. The second acting arm 4 is provided with a second mounting groove 401 matched with the second mounting protrusion 302. The design can ensure that the first acting arm 2 and the rack 1, the second acting arm 4 and the ratchet cover plate base 301 are fixedly connected in a detachable mode, so that the parts can be conveniently detached and replaced when the parts are damaged, the whole device is not discarded, and the use and maintenance cost is reduced.

Example 3

Based on the distraction presser in embodiment 2, the first mounting protrusion 101 and the first mounting groove 201, and the second mounting protrusion 302 and the second mounting groove 401 are fixed by screws or welding. The first acting arm 2 and the rack 1, the second acting arm 4 and the ratchet cover plate base 301 form firm fixed relation when the arrangement is further, and the problem that the first acting arm 2 falls off relative to the rack 1 and the second acting arm 4 relative to the ratchet cover plate base 301 in the using process is avoided.

Example 4

Based on the spreading pressurizer described in embodiment 1, as shown in fig. 1 and 3, a washer 3133 is externally sleeved on the gear shaft 3132. The side wall 31331 of the washer 3133 is connected to a stationary shaft of the toothed side wall 3135. This arrangement reduces friction between bearing 3133 and rotating mechanism 312, increasing the useful life of the device.

Example 5

Based on the spreading pressurizer of embodiment 1, as shown in fig. 1-3, the rack 1 is a double-sided toothed rack, and the tooth sockets are a gear tooth socket 103 and a ratchet tooth socket 102 respectively. The rack movement base 3 further includes: a ratchet cover plate 309, a ratchet knob 307 and 2 or 4 other numbers of ratchets 305, and ratchet through grooves 303 communicated with the rack through grooves 311 are arranged at the opposite sides of the rotating mechanism 312. The ratchet cover plate base 301 is provided with ratchet shaft grooves 304 at the top ends of the side walls at the two sides of the ratchet through groove 303. One end of each of the 2 or 4 ratchets 305 with other quantity is respectively fixed on two opposite sides of the shaft surface of the ratchet shaft 3051, and the other end passes through the ratchet through groove 303 to be in toothed connection with the rack 1. Here, the ratchet teeth 305 on both sides of the ratchet shaft 3051 are not simultaneously engaged with the rack bar 1, but when one ratchet tooth 305 is engaged with the rack bar 1, the other ratchet tooth 305 is not engaged with the rack bar 1. The ratchet shaft 3051 is installed in the ratchet shaft groove 304. One end of the ratchet shaft 3051 is provided with a spring fixing groove 3054 at one side back to the rack through groove 311, and the other end of the ratchet shaft 3051 is provided with a polygonal fixing column 3052 extending to the outside of the ratchet through groove 303. The middle shaft of the polygonal fixing column 3052 is provided with a first screw hole 3053. The ratchet knob 307 is sleeved outside the polygonal fixing column 3052 through a polygonal hole 3071 formed in the middle shaft, and the first fixing screw 308 penetrates through the polygonal hole 3071 to be in threaded connection with the first threaded hole 3053. The nut of the first fixing screw 308 is wider than the aperture of the polygonal hole 3071. The side of the ratchet cover plate 309 facing the ratchet shaft 3051 is provided with a circular arc groove 3091 matched with the ratchet shaft 3051 and fixed at the ratchet through groove 303 of the ratchet cover plate base 301 through a second fixing screw 310. A first spring 306 and a limiting steel ball 312 are clamped between the ratchet cover plate 309 and the spring fixing groove 3054.

At this time, when the spreading operation is required, the user first twists the ratchet knob 307 to rotate the ratchet shaft 3051, so that the ratchet 305 fixed to the side close to the first action arm 2 is engaged with the rack bar 1, and at this time, the end of the first spring 306 connected to the spring fixing groove 3054 is rotated close to the first action arm 2 by the ratchet shaft 3051 and applies pressure to the spring fixing groove 3054. Then, the user performs the operation described in embodiment 1, so that the rack movement base 3 drives the second action arm 4 to move along the rack 1 in a direction away from the first action arm 2. At this time, after the ratchet 305 engaged with the rack 1 is raised by the tooth top in the moving process, the ratchet shaft 3051 is driven to rotate, and the spring fixing groove 3054 applies pressure to the first spring 306, and when the ratchet 305 moves between two teeth, the spring fixing groove 3054 drives the ratchet shaft 3051 to rotate due to the pressure applied to the spring fixing groove 3054 by the first spring 306, so that the ratchet 305 rotates and is clamped between the two teeth. When the user performs the reverse operation, since the ratchet 305 is caught between the two teeth and cannot rebound reversely under the action of the first spring 306, the user cannot move the rack moving base 3 reversely, thereby realizing the positioning and anti-reverse-slip functions.

Example 6

The spreading presser according to embodiment 1 includes a wrench 6 for rotating a gear 313, as shown in fig. 1.

As shown in fig. 3, a polygonal groove 3134 is formed on the top of the gear shaft 3132 extending to the outside of the holder connecting mechanism 314. As shown in fig. 4, the wrench 6 includes: an integral or detachable fixedly attached wrench grip 601 and driver rod 602. The end of the driver rod 602 facing the gear shaft 3132 is provided with a polygonal protrusion 603 matching with the polygonal groove 3134.

By adopting the design, a user can drive the gear shaft 3132 to rotate through the wrench 6 in a labor-saving manner, so that the opening or pressurizing operation is realized.

Example 7

Based on the expanding pressurizer of embodiment 6, as shown in fig. 4, the end of the wrench grip 601 facing the driver rod 602 is provided with a slot matching with the driver rod 602. A first bolt hole 6011 communicated with the slot is formed in the slot of the wrench grip 601. The driver rod 602 is provided with a second pin hole 6021 at a position corresponding to the first pin hole 6011. The first pin hole 6011 and the second pin hole 6021 are fixed by a pin 604.

This setting makes spanner handle 601 and driver pole 602 form and can dismantle fixed connection, when needs tear open and trade above-mentioned part, only need tear open and trade corresponding accessory, and need not wholly to tear open and trade, has reduced use and maintenance cost.

Example 8

Based on the expanding presser described in embodiment 6, as shown in fig. 4, the ratchet cover base 301 is provided with a holder connecting mechanism 314 rotatably connected to a gear shaft 3132 at a position where the gear shaft 3132 extends to the outside of the rotating mechanism 312. The handle 5 is sleeved outside the screwdriver rod 602. As shown in fig. 5, the holder 5 includes: a wrench sleeve handle 501, a holder grip 502 and a grip fastening cover 503. One end of the wrench sleeve handle 501 is provided with a connecting groove matched with the holder connecting mechanism 314, and the other end is provided with a polygonal holder grip connecting post 5012. The top end of the holder handle connecting column 5012 is provided with a fixed cover connecting column 5013. The wrench sleeve handle 501 and the handle fastening cover 503 are coaxially provided with through holes at the middle shaft, which are matched with the outer diameter of the screwdriver rod 602 and communicated with the connecting groove. The holder grip 502 includes a long-handled grip portion 5021. The end of the grip portion 5021 facing the wrench shank 501 is provided with a connection hole 5022 that mates with a polygonal grip connection post 5012. The grip securing cap 503 has a groove that matches the fixed cap post 5013.

When the gear shaft 3132 drives the ratchet cover base 301 to move, an internal rotational stress in a rotational direction is applied to the rack 1 through the gear 3131 and the ratchet cover base 301, and when a larger rotational force is required to drive the ratchet cover base 301 to move, the internal rotational stress applied to the rack 1 is also larger. The distraction pressurizer described in examples 1-7 will have the rack 1 by itself resist this internal rotational stress, which will cause the rack 1 to break when the rack 1 cannot continue to withstand this internal rotational stress. After the structure of the holder 5 described in embodiment 8 is adopted, since the holder 5 and the ratchet cover base 301 are fixed by the holder connection mechanism 314, in use, the screwdriver rod 602 passes through the through holes of the wrench sleeve handle 501 and the grip fastening cover 503 to connect with the polygonal groove 3134. When the gear shaft 3132 is rotated by the wrench 6, the internal rotational stress generated by the rotation of the gear shaft 3132 is also transmitted to the holder 5 through the holder connecting mechanism 314, and the user holds the holder 5 and applies a force opposite to the rotation direction of the gear shaft 3132, so as to counteract the internal rotational stress, so that the ratchet cover plate base 301 does not apply the internal rotational stress to the rack 1 in the rotation direction any more, or greatly reduce the internal rotational stress, thereby prolonging the service life of the rack 1.

Example 9

As shown in fig. 3 and 5, the expanding presser according to embodiment 8 has a locking groove 3141 formed in the holder connecting mechanism 314. The holder 5 includes: unlocking pin 504, lock pin 505, lock pin spring, lock pin cover plate 507, pin return spring 5044. The end of the wrench handle 501 provided with the connecting groove is vertically provided with a locking pin sliding slot 5014 communicated with the connecting groove. The locking pin 505 comprises: a locking pin seat 5053 that mates with the locking pin runner 5014. The end of the locking pin mount 5053 facing the holder connection 314 is provided with a locking pin insert 5051. The locking pin seat 5053 is provided with an outwardly inclined tapered unlocking sliding surface 5052 on the side facing the holder grip 502. The conical unlocking sliding surface 5052 is in contact fit with the unlocking thimble end 5043 to realize the opening and closing of the holder 5 and the rack motion base 3. The bottom surface of the lock pin holder 5053 is connected to the lock pin cover 507 via a lock pin spring 506. The locking pin cover plate 507 is fixed with the wrench handle 501 by a third fixing screw 508. The wrench sleeve handle 501 is provided with a thimble return spring through groove 5015 communicated with the locking pin sliding groove 5014 at the position of the conical unlocking sliding surface 5052. An unlocking thimble through groove 5023 is arranged on the holder handle 502. One end of the unlocking thimble 504 is provided with an unlocking thimble end 5043 which passes through the thimble return spring through slot 5015 and is pressed against the conical unlocking sliding surface 5052, and the other end of the unlocking thimble 504 passes through the unlocking thimble through slot 5023 and is fixed with the button 5041. The outer diameter of the unlocking thimble end 5043 is smaller than the outer diameter of the unlocking thimble 504, and the unlocking thimble end is slidably connected with the thimble return spring through groove 5015 through a sleeved first limit ring 5045. And an ejector pin return spring 5044 is clamped between the first limit ring 5045 and the bottom surface of the ejector pin return spring through groove 5015. The unlocking spike tip 5043 bears against a ramp on one side of the conical unlocking ramp 5052 that mates with the conical unlocking ramp 5052.

When it is desired to tighten the holder 5 and the holder connection mechanism 314, it is only necessary to align the connection grooves of the holder 5 with the holder connection mechanism 314 and press the holder 5. At this time, when the lock pins 505 come into contact with the holder link mechanism 314, they are pressed by the holder link mechanism 314 and move toward the lock pin cover 507. When the locking pin 505 is moved to the locking groove 3141 position, the locking pin insert 5051 is inserted into the locking groove 3141 by the restoring force of the locking pin spring 506, and the drop-proof fixation of the holder 5 and the holder connection mechanism 314 is achieved.

When it is desired to disengage the holder 5 from the holder connection 314, the unlocking pin 504 is moved in the direction of the locking pin 505 by pressing the button 5041, so that the tip 5043 of the unlocking pin presses the tapered unlocking slide surface 5052, so that the tapered unlocking slide surface 5052 drives the locking pin 505 to move toward the locking pin cover plate 507 under the action of pressure, and the locking pin insert 5051 is disengaged from the locking groove 3141. The holder 5 and the holder connection mechanism 314 are then separated. After the separation is completed, the locking pin insert 5051 drives the locking pin 505 to return to the original position by the restoring force of the locking pin spring 506, and the unlocking pin tip 5043 drives the unlocking pin 504 to return to the original position by the restoring force of the third spring.

Example 10

Based on the distraction presser of embodiment 9, as shown in fig. 5, the unlocking thimble 504 is slidably connected to the unlocking thimble through groove 5023 through a second limit ring 5042. The arrangement can reduce the sliding friction force between the unlocking thimble 504 and the unlocking thimble through groove 5023, and prolong the service life.

The side of the wrench handle 501 facing the unlocking thimble 504 is provided with an unlocking thimble limiting slot 5016. The unlocking pin 504 partially passes through the unlocking pin defining slot 5016 and is slidably connected to the unlocking pin defining slot 5016. The arrangement can provide a sliding bearing force for the unlocking thimble 504 at the middle section, and the unlocking thimble 504 is prevented from being twisted or broken under the action of two opposite pressing forces.

The utility model discloses one in the following advantage has at least:

1. the utility model discloses can realize strutting simultaneously and the pressurization effect, avoid the not convenient part of change instrument, and can realize fixing a position in real time and prevent the anti-skidding function through adding the ratchet of establishing.

2. The utility model discloses an install spanner additional and a holder, can change the internal stress of rotation that bears originally by the rack and bear by a holder, improved the life of rack greatly.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. A distraction pressurizer, comprising: the device comprises a strip-shaped rack (1), a first action arm (2) fixed on one side of the rack (1), a rack movement base (3) and a second action arm (4) which is fixed on the rack movement base (3) and is designed in parallel with the first action arm (2);

the rack movement base (3) includes: the ratchet cover plate base (301) is sleeved outside the rack (1); the ratchet cover plate base (301) is provided with a rack through groove (311) matched with the rack (1), and a rotating mechanism (312) is arranged on the side, facing the rack (1), of the toothed belt; a gear (313) is rotatably mounted in the rotating mechanism (312); the gear teeth (3131) of the gear (313) are in tooth joint with the rack (1), and the gear shaft (3132) of the gear extends to the outside of the rotating mechanism (312).

2. A spreading pressurizer according to claim 1, characterized in that the side of the rack (1) facing the first acting arm (2) is provided with a first mounting protrusion (101); a first mounting groove (201) matched with the first mounting protrusion (101) is formed in the first acting arm (2);

the ratchet cover plate base (301) is arranged on one side facing the second acting arm (4); and a second mounting groove (401) matched with the second mounting bulge (302) is formed in the second acting arm (4).

3. The distraction compressor according to claim 2, wherein the first mounting protrusion (101) and the first mounting groove (201) and the second mounting protrusion (302) and the second mounting groove (401) are fixed by screws or welding.

4. The distracting pressurizer of claim 1, wherein the gear shaft (3132) is externally sleeved with a washer (3133); the side wall (31331) of the gasket (3133) is connected with the fixed shaft of the side wall (3135) of the gear.

5. The distraction presser according to claim 1, wherein said rack (1) is a double-sided toothed rack, with toothing respectively being a gear toothing (103) and a ratchet toothing (102); the rack motion base (3) further comprises: the ratchet cover plate (309), the ratchet knob (307) and the ratchet (305), and a ratchet through groove (303) communicated with the rack through groove (311) is arranged on the opposite side of the rotating mechanism (312); the top ends of the side walls of the ratchet cover plate base (301) positioned at the two sides of the ratchet through groove (303) are provided with ratchet shaft grooves (304);

one end of each ratchet (305) is respectively fixed on two opposite sides of the shaft surface of the ratchet shaft (3051), and the other end of each ratchet penetrates through the ratchet through groove (303) to be in toothed connection with the rack (1); the ratchet shaft (3051) is arranged in the ratchet shaft groove (304); one end of the ratchet shaft (3051) is provided with a spring fixing groove (3054) at one side back to the rack through groove (311), and the other end of the ratchet shaft is provided with a polygonal fixing column (3052) extending to the outside of the ratchet through groove (303); a first screw hole (3053) is formed in the middle shaft of the polygonal fixing column (3052); the ratchet knob (307) is sleeved outside the polygonal fixing column (3052) through a polygonal hole (3071) formed in the middle shaft, and a first fixing screw (308) penetrates through the polygonal hole (3071) to be in threaded connection with the first threaded hole (3053); the nut of the first fixing screw (308) is wider than the aperture of the polygonal hole (3071);

one side, facing the ratchet shaft (3051), of the ratchet cover plate (309) is provided with an arc groove (3091) matched with the ratchet shaft (3051), and the ratchet cover plate is fixed at a ratchet through groove (303) of the ratchet cover plate base (301) through a second fixing screw (310); a first spring (306) and a limiting steel ball (315) are clamped between the ratchet cover plate (309) and the spring fixing groove (3054).

6. The spreader-presser according to claim 1, characterized in that it comprises a wrench (6) for bringing in rotation a gear (313);

the top of the gear (313) extending to the outside of the holder connecting mechanism (314) is provided with a polygonal groove (3134); the wrench (6) comprises: the wrench handle (601) and the screwdriver rod (602) are fixedly connected in an integrated or detachable mode; one end of the screwdriver rod (602) facing the gear shaft (3132) is provided with a polygonal protrusion (603) matched with the polygonal groove (3134).

7. The distraction pressure device according to claim 6, wherein the end of the wrench grip (601) facing the screwdriver rod (602) is provided with a slot matching with the screwdriver rod (602); a first bolt hole (6011) communicated with the slot is formed in the slot on the wrench grip (601); a second bolt hole (6021) is formed in the screwdriver rod (602) at a position corresponding to the first bolt hole (6011); the first bolt hole (6011) and the second bolt hole (6021) are fixed through a bolt (604).

8. The distracting presser of claim 6, wherein the ratchet cover base (301) is provided with a holder attachment mechanism (314) rotatably connected to a gear shaft (3132); a holder (5) is sleeved outside the screwdriver rod (602); the holder (5) comprises: a wrench sleeve handle (501), a holder grip (502) and a grip fastening cover (503);

one end of the wrench sleeve handle (501) is provided with a connecting groove matched with the holder connecting mechanism (314), and the other end of the wrench sleeve handle is provided with a polygonal holder grip connecting column (5012); the top end of the handle connecting column (5012) of the holder is provided with a handle fastening cover connecting column (5013); the central shafts of the wrench sleeve handle (501) and the handle fastening cover (503) are coaxially provided with through holes matched with the outer diameter of the screwdriver rod (602);

the holder grip (502) comprises a long-handled grip portion (5021); one end of the grip part (5021) facing the wrench sleeve handle (501) is provided with a connecting hole (5022) matched with a polygonal grip connecting column (5012) of the holder;

the handle fastening cover (503) and the handle fastening cover connecting column (5013) are matched with each other through threads.

9. The distracting and pressurizing device according to claim 8, wherein the holder connecting mechanism (314) is provided with a locking groove (3141); the holder (5) comprises: an unlocking thimble (504), a locking pin (505), a locking pin spring (506), a locking pin cover plate (507) and a thimble return spring (5044); the wrench sleeve handle (501) is provided with a locking pin sliding groove (5014);

the locking pin (505) comprises: a locking pin insert (5051), a tapered unlocking slide (5052); the conical unlocking sliding surface (5052) is in contact fit with the unlocking thimble end (5043) to realize the opening and closing of the holder (5) and the rack moving base (3); the locking pin (505) is in compression connection with the locking pin cover plate (507) through a locking pin spring (506) to realize self-locking; the locking pin cover plate (507) is fixed with the wrench sleeve handle (501) through a third fixing screw (508);

the wrench sleeve handle (501) is arranged in a thimble return spring through groove (5015) communicated with the locking pin sliding groove (5014); an unlocking thimble through groove (5023) is arranged on the handle (502) of the holder;

one end of the unlocking thimble (504) is provided with an unlocking thimble end (5043) which penetrates through a thimble return spring through groove (5015) and is pressed against the conical unlocking sliding surface (5052), and the other end of the unlocking thimble passes through an unlocking thimble through groove (5023) and is fixed with a button (5041); the outer diameter of the unlocking thimble end (5043) is smaller than that of the unlocking thimble (504), and the unlocking thimble end is in sliding connection with the thimble return spring through groove (5015) through a sleeved first limiting ring (5045); thimble return spring (5044) is clamped between the first limit ring (5045) and the bottom surface of the thimble return spring through groove (5015).

10. The distraction compressor according to claim 9, wherein the unlocking thimble (504) is fixedly connected with the second limit ring (5042) and is slidably connected with the unlocking thimble through groove (5023); an unlocking thimble limiting groove (5016) is formed in one side, facing the unlocking thimble (504), of the wrench sleeve handle (501); the unlocking thimble (504) penetrates through the unlocking thimble limiting groove (5016) and is in sliding connection with the unlocking thimble limiting groove (5016).

Images