CN218082518U

CN218082518U - Extension bar structure for puller

Info

Publication number: CN218082518U
Application number: CN202222523634.8U
Authority: CN
Inventors: 李庆会; 张文建; 冯宗杰; 王德朋; 梁建辉; 栾宏; 薛超
Original assignee: Rocket Sergeant School Of Pla
Current assignee: Rocket Sergeant School Of Pla
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2022-12-20
Anticipated expiration: 2032-09-23

Abstract

The utility model discloses an extension bar structure for horse drawing device, including the dead lever, the dead lever comprises centre gripping section and linkage segment, the one end that the centre gripping section was kept away from to the linkage segment is provided with the extending structure who is used for extension horse drawing screw rod length. The utility model discloses, be connected through the fixed orifices and the screw rod of drawing the horse, the taper hole is used for conveniently drawing the horse screw rod and decide application of force center, the dead lever, extension rod and top pole pass through the connecting hole, connector and bayonet lock subassembly and spout structure joint are whole, the conical head on the top pole is used for with being dismantled the part like the axle contact, the top avoids skidding in the center hole of axle, the scope that can prolong as required, make a plurality of extension rods, select to use one and a plurality of extension rods according to concrete requirement, through bayonet lock subassembly and spout structure, make the joint of connector and connecting hole more convenient.

Description

Extension bar structure for puller

Technical Field

The utility model relates to a relevant accessory technical field of horse-drawn especially relates to an extension bar structure for horse-drawn device.

Background

The puller is divided into a three-jaw puller and a two-jaw puller, is a tool frequently used in mechanical maintenance, is mainly used for detaching objects such as a bearing, a coupler or a small impeller from a shaft along the axial direction, and is usually assisted by using an extension bar because the length of a screw rod is not long enough in the detaching process, but the conventional extension bar is mostly a section of round steel.

The extension bar has the defects that the length of the existing part can not be adjusted, and once the end face is not flat or is not placed in balance, the round steel is stressed unevenly and inclined in the pressurizing process, so that the disassembly fails, and the phenomenon of extrusion and flying out can occur in more serious conditions, thereby causing serious consequences.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an extension bar structure for a puller.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an extension bar structure for puller, includes the dead lever, the dead lever comprises centre gripping section and linkage segment, the one end that the linkage segment was kept away from to the centre gripping section is offered the fixed orifices that is used for connecting the puller screw rod, the taper hole that is used for puller screw rod centering is offered to the one end that the fixed orifices is close to the linkage segment, the outer wall of centre gripping section is opened and is put the first screw hole that has a perfect understanding with the fixed orifices, the one end that the centre gripping section was kept away from to the linkage segment is provided with the extension structure that is used for extension puller screw rod length, the extension structure includes: the extension rod is clamped at one end of the connecting section, which is far away from the clamping section; the center rod is clamped at one end, far away from the connecting section, of the extension rod; the conical head is arranged at one end, far away from the extension rod, of the center rod, and the conical head and the center rod are integrally arranged; the two connecting holes are respectively arranged at one end of the connecting section facing the extension rod and one end of the extension rod facing the top tip rod; the two connectors are respectively arranged at one end of the extension rod facing the connecting section and one end of the center rod facing the extension rod, and are respectively connected with the two connecting holes in a sliding manner; the bayonet lock assembly is arranged on the connector and is used for clamping the connector and the connecting hole; the spout structure, the spout structure sets up at the connecting hole inside wall, the spout structure is used for cooperating bayonet lock subassembly joint connector and connecting hole.

As a further description of the above technical solution:

the bayonet lock subassembly is including fixed cover and two sets of bullet round pins, the connector inner wall is provided with and is the through-hole that radially link up, the through-hole is close to the connector left end, the connector left end is provided with the second screw hole that link up with the through-hole, second screw hole inside wall threaded connection has the interior hexagonal screw, fixed cover can be dismantled and connect at the through-hole inside wall, fixed cover is fixed through the interior hexagonal screw, both ends are provided with the blind hole respectively about fixed cover, and are two sets of bullet round pin sliding connection is respectively at two sets of blind hole inside walls, and is two sets of bullet round pin, the equal threaded connection of both ends circumference outer wall is two sets of respectively the bullet round pin is spacing through two sets of locking rings, and is two sets of all be provided with the spring between bullet round pin and the fixed cover.

As a further description of the above technical solution:

two sets of the one end that fixed cover was kept away from to the bullet round pin stretches out the through-hole both ends respectively and extends to the both sides that the connector circumference outer wall is relative, the one end that fixed cover was kept away from to the bullet round pin is provided with the circular arc head.

As a further description of the above technical solution:

the spout structure includes that two erect groove, cross slot and two joint holes, two it is relative form setting and link up at the connecting hole inside wall and with the connecting hole oral area to erect the groove and be the parallel form with the connecting hole central line, two it is trapezoidal and be close to the one end degree of depth of connecting hole oral area to erect the groove and just be greater than the other end degree of depth, two to erect the groove orthographic cross section projection the cross slot all sets up at the connecting hole inside wall and link up with two one ends of erecting the groove and keeping away from the connecting hole oral area respectively, erect the groove and unfold the view with the cross slot and be L type and erect the groove and be L type long limit, cross slot be L type minor face, two the joint hole all sets up and just keeps away from the one end of erecting the groove with two cross slots respectively at the connecting hole inside wall and link up.

As a further description of the above technical solution:

the depth of the clamping hole is consistent with the depth of one end, close to the opening part of the connecting hole, of the vertical groove.

As a further description of the above technical solution:

the connecting section, the extension rod, the tip rod and the outer diameter are all the same, and the depth of the connecting hole is the same as the length of the connector and is two thirds of the length of the connecting section, the length of the extension rod and the length of the tip rod.

As a further description of the above technical solution:

the diameter of the connector and the inner diameter of the connecting hole are both half of the diameter of the extension rod.

The utility model discloses following beneficial effect has:

1. compared with the prior art, this extension bar structure for puller, when needs extend the screw rod of puller, the fixed orifices through in the dead lever is connected with the screw rod of puller, and fix into an organic whole structure through the screw that twists the screw in first screw hole with the screw rod of puller, taper hole in the fixed orifices is used for making things convenient for the screw rod of puller to decide application of force center, the dead lever, extension bar and top pole pass through the connecting hole, connector and bayonet lock subassembly and spout structure joint are whole, the conical head on the top pole is used for with the part of being dismantled like the axle contact, the top avoids skidding in the center hole of axle, the scope that can prolong as required, make a plurality of extension bars, select to use one and a plurality of extension bars according to concrete requirement.

2. Compared with the prior art, this extension bar structure for horse puller, through bayonet lock subassembly and spout structure, make the joint of connector and connecting hole more convenient, during the assembly, only need insert the connecting hole with the connector and make the bullet round pin aim at perpendicular groove, then push to the end, the bullet round pin is pushed back to inside the connector by the perpendicular groove jack that the groove depth becomes shallow this moment, keep connecting hole portion motionless again, the connector part is according to the direction clockwise rotation of following the conical head to the dead lever seeing, make the bullet round pin along the cross slot get into in the joint hole, and pop out through the spring, straight body part through the bullet round pin carries out the joint with the joint hole, make extension rod and dead lever, form the joint between top rod and the extension rod, when needs are dismantled, reverse operation can withdraw from the connector from in the connecting hole.

Drawings

Fig. 1 is a schematic view of the overall structure of an extension bar structure for a puller according to the present invention;

fig. 2 is a sectional view of the internal structure of a fixing rod of the extension rod structure for the extractor of the present invention;

fig. 3 is a schematic view of an extension rod structure for a puller according to the present invention;

fig. 4 is a schematic cross-sectional view of an internal structure of an extension rod structure for a screw extractor of the present invention;

fig. 5 is a schematic view of the section of the internal structure of the fixing sleeve and the spring pin of the extension bar structure for the extractor of the present invention.

Illustration of the drawings:

1. a clamping section; 2. a connecting section; 3. an extension pole; 4. a tip rod; 5. a first screw hole; 6. a conical head; 7. a connector; 8. connecting holes; 9. a spring pin; 10. a vertical slot; 11. a transverse groove; 12. a clamping hole; 13. a fixing hole; 14. a taper hole; 15. a second screw hole; 16. fixing a sleeve; 17. locking a ring; 18. a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): referring to fig. 1 to 5, the utility model provides a pair of extension bar structure for puller: including the dead lever, the dead lever comprises centre gripping section 1 and linkage segment 2, centre gripping section 1 is kept away from the one end of linkage segment 2 and is offered the fixed orifices 13 that is used for connecting the screw rod of drawing the horse, the one end that fixed orifices 13 is close to linkage segment 2 is offered and is used for drawing the taper hole 14 that the screw rod was fixed a definite, the outer wall of centre gripping section 1 is opened and is put the first screw hole 5 that link up with fixed orifices 13, the one end that the clamping section 1 was kept away from to linkage segment 2 is provided with the extension structure that is used for the extension to draw horse screw rod length, the extension structure includes: the extension rod 3, the top rod 4, the conical head 6, two connecting holes 8, two connectors 7, a bayonet lock component and a sliding groove structure.

Linkage segment 2, extension rod 3, top pole 4 length and external diameter are all unanimous, the degree of depth and the 7 unanimous lengths of connector of connecting hole 8 and be linkage segment 2, two-thirds of extension rod 3 and top pole 4 length, the diameter of connector 7, the internal diameter of connecting hole 8 is half of extension rod 3 diameter, through the degree of depth with connecting hole 8, linkage segment 2 is set to connector 7 length, two-thirds of extension rod 3 and top pole 4 length, and with the diameter of connector 7, the internal diameter of connecting hole 8 sets to half of extension rod 3 diameter, make the bulk strength better.

The extension rod 3 is clamped at one end of the connecting section 2 far away from the clamping section 1; 4 joints of apex pole are in the one end that linkage segment 2 was kept away from to extension rod 3, and conical head 6 sets up the one end of keeping away from extension rod 3 at apex pole 4, and conical head 6 is an organic whole with apex pole 4 and sets up, and conical head 6's appearance is unanimous with drawing horse screw rod end shape for with the central contact by the dismantlement part, like the central hole portion of axle, skid when can avoiding the application of force, extension rod 3 can set up many as required, the length selection use quantity that prolongs according to concrete needs.

Two connecting holes 8 are respectively arranged at one end of the connecting section 2 facing the extension rod 3 and one end of the extension rod 3 facing the tip rod 4, two connectors 7 are respectively arranged at one end of the extension rod 3 facing the connecting section 2 and one end of the tip rod 4 facing the extension rod 3, the two connectors 7 are respectively connected with the two connecting holes 8 in a sliding manner, the two connecting holes 8 are formed, the connectors 7 enable the extension rod 3 and the fixed rod to be connected into a whole, the tip rod 4 cannot be bent from the connecting parts in the force application process, and the phenomenon of slipping cannot occur.

The bayonet lock subassembly sets up at connector 7, the bayonet lock subassembly is used for the joint between connector 7 and connecting hole 8, the bayonet lock subassembly is including fixed cover 16 and two sets of bullet round

9, 7 inner walls of connector are provided with and are the radial through-hole that link up, the through-hole is close to 7 left ends of connector, 7 left ends of connector are provided with the second screw hole 15 that link up with the through-hole, 15 inside wall threaded connection of second screw hole have the interior hexagonal screw, fixed cover 16 can be dismantled and connect at the through-hole inside wall, fixed cover 16 is fixed through the interior hexagonal screw.

Both ends are provided with the blind hole respectively about fixed cover 16, two sets of bullet round pins 9 are sliding connection respectively at two sets of blind hole inside walls, two sets of bullet round pins 9, the equal threaded connection of both ends circumference outer wall has locking ring 17 about fixed cover 16, it is spacing through two sets of locking rings 17 respectively two sets of bullet round pins 9, all be provided with spring 18 between two sets of bullet round pins 9 and the fixed cover 16, the one end that fixed cover 16 was kept away from to two sets of bullet round pins 9 stretches out the through-hole both ends respectively and extends to the both sides that connector 7 circumference outer wall is relative, the one end that fixed cover 16 was kept away from to bullet round pin 9 is provided with the circular arc head, it is outstanding to the connector 7 outside when bullet round pin 9 is by spring 18 jack-up, through the straight body position and the joint hole 12 joint of bullet round pin 9 when cooperating with joint hole 12, the setting up of circular arc head makes the withdrawal through spout structural control bullet round pin 9 more convenient.

The spout structure sets up at 8 inside walls of connecting hole, the spout structure is used for cooperating bayonet lock subassembly joint connector 7 and connecting hole 8, the spout structure includes two perpendicular grooves 10, cross slot 11 and two joint holes 12, two are erected groove 10 and are relative form setting and link up at 8 inside walls of connecting hole and with 8 oral area of connecting hole, two are erected groove 10 and are the parallel form with 8 central lines of connecting hole, two are erected groove 10 and are looked the cross-section projection and be trapezoidal and be close to the one end degree of depth of 8 oral areas of connecting hole and be greater than the other end degree of depth, two cross slots 11 all set up in 8 inside walls of connecting hole and link up with two one end that are erected groove 10 and keep away from 8 oral areas of connecting hole respectively.

Erect

groove

10 and 11 expansion views of transverse groove and be the L type and erect groove 10 and be the long limit of L type, transverse groove 11 is L type minor face, two joint holes 12 all set up at connecting hole 8 inside wall and respectively with two transverse groove 11 keep away from the one end of erecting groove 10 and link up, joint hole 12 degree of depth is unanimous with the one end degree of depth that erects groove 10 and be close to connecting hole 8 oral area, through erecting groove 10, the setting of transverse groove 11L type, can make connector 7, can not oneself break away from behind the 8 joints of connecting hole, and also very convenient when needing to dismantle, connector 7 when assembling with connecting hole 8 connector 7 direction of rotation is opposite with the screw rod rotation direction of the horse during operation, can avoid rotating and throw off.

The working principle is as follows: the depth of the connecting hole 8 and the length of the connecting head 7 are set to be two thirds of the length of the connecting section 2, the extension rod 3 and the top tip rod 4, and the diameter of the connecting head 7 and the inner diameter of the connecting hole 8 are set to be half of the diameter of the extension rod 3, so that the overall strength is better.

Conical head 6 is an organic whole with top pole 4 and sets up, conical head 6 be used for with the central contact of being dismantled the part, if the central hole portion of axle, skid when can avoiding the application of force, extension rod 3 can set up many as required, and length selection according to the specific need extension uses quantity, makes extension rod 3 and dead lever, connector 7 connect into whole and application of force in-process can not take place to bend, the phenomenon of skidding from the junction through two connecting holes 8, connector 4.

Spring pin 9 is outstanding in the connector 7 outside when by spring 18 jack-up, straight body position and joint hole 12 joint through spring pin 9 when cooperating with joint hole 12, setting up of arc head makes the withdrawal through spout structure control spring pin 9 more convenient, through erecting groove 10, transverse groove 11 forms the setting of L type, can make connector 7, can not oneself break away from behind the 8 joints of connecting hole, and also very convenient when needing to dismantle, connector 7 direction of rotation when connector 7 assembles with connecting hole 8 rotates opposite direction with the screw rod during horse drawing work, can avoid rotating and throw off.

Finally, it should be noted that: the technical solutions of the present invention can be better understood with reference to the drawings, and the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions described in the foregoing embodiments can be modified, or some technical features can be equally replaced, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an extension bar structure for puller, includes the dead lever, the dead lever comprises centre gripping section (1) and linkage segment (2), its characterized in that: the one end that linkage segment (2) were kept away from in centre gripping section (1) is offered and is used for connecting mounting hole (13) of drawing the horse screw rod, taper hole (14) that are used for drawing the horse screw rod centering are offered to the one end that linkage segment (2) are close to in mounting hole (13), the outer wall of centre gripping section (1) is opened and is put first screw hole (5) that link up with mounting hole (13), the one end that the clamping segment (1) was kept away from in linkage segment (2) is provided with the extension structure that is used for the extension to draw horse screw rod length, the extension structure includes:

the extension rod (3) is clamped at one end, far away from the clamping section (1), of the connecting section (2);

the top rod (4), the top rod (4) is clamped at one end of the extension rod (3) far away from the connecting section (2);

the conical head (6) is arranged at one end, far away from the extension rod (3), of the top point rod (4), and the conical head (6) and the top point rod (4) are integrally arranged;

the two connecting holes (8) are respectively arranged at one end of the connecting section (2) facing the extension rod (3) and one end of the extension rod (3) facing the tip rod (4);

the two connectors (7) are respectively arranged at one end of the extension rod (3) facing the connecting section (2) and one end of the tip rod (4) facing the extension rod (3), and the two connectors (7) are respectively connected with the two connecting holes (8) in a sliding manner;

the clamping pin assembly is arranged on the connector (7) and used for clamping between the connector (7) and the connecting hole (8);

the spout structure, the spout structure sets up at connecting hole (8) inside wall, the spout structure is used for cooperating bayonet lock subassembly joint connector (7) and connecting hole (8).

2. The extension bar structure for the extractor as claimed in claim 1, wherein: the bayonet lock subassembly is including fixed cover (16) and two sets of bullet round pin (9), connector (7) inner wall is provided with the through-hole that is radial link up, the through-hole is close to connector (7) left end, connector (7) left end is provided with second screw hole (15) that link up with the through-hole, second screw hole (15) inside wall threaded connection has the hexagon socket head cap screw, fixed cover (16) can be dismantled and connect at the through-hole inside wall, fixed cover (16) is fixed through the hexagon socket head cap screw, both ends are provided with the blind hole respectively about fixed cover (16), and are two sets of bullet round pin (9) sliding connection is respectively at two sets of blind hole inside walls, and is two sets of bullet round pin (9), the equal threaded connection of both ends circumference outer wall has locking ring (17) about fixed cover (16), and is two sets of bullet round pin (9) are spacing through two sets of locking ring (17) respectively, and are two sets of all be provided with spring (18) between bullet round pin (9) and fixed cover (16).

3. The extension bar structure for the extractor as claimed in claim 2, wherein: two sets of the one end that fixed cover (16) was kept away from in bullet round pin (9) stretches out the through-hole both ends respectively and extends to connector (7) circumference outer wall relative both sides, the one end that fixed cover (16) was kept away from in bullet round pin (9) is provided with the circular arc head.

4. The extension bar structure for the extractor as claimed in claim 1, wherein: the spout structure includes that two erect groove (10), horizontal groove (11) and two joint holes (12), two erect groove (10) and be relative form setting and link up at connecting hole (8) inside wall and with connecting hole (8) oral area, two it is parallel form, two to erect groove (10) and connecting hole (8) central line erect groove (10) orthographic cross-section projection and be trapezoidal and be close to the one end degree of depth of connecting hole (8) oral area and be greater than the other end degree of depth, two horizontal groove (11) all set up at connecting hole (8) inside wall and respectively with two erect groove (10) keep away from the one end of connecting hole (8) oral area and link up, erect groove (10) and horizontal groove (11) expansion view and be the L type and erect groove (10) and be L type long limit, horizontal groove (11) and be L type minor face, two department joint holes (12) all set up and link up the one end of erecting groove (10) with two horizontal groove (11) are kept away from respectively at connecting hole (8) inside wall and link up.

5. The lengthening bar structure for the horse puller according to claim 4, wherein: the depth of the clamping hole (12) is consistent with the depth of one end of the vertical groove (10) close to the opening part of the connecting hole (8).

6. The extension bar structure for the extractor as claimed in claim 1, wherein: the length of the connecting section (2), the length of the extension rod (3), the length of the top rod (4) and the outer diameter of the connecting section are all consistent, and the depth of the connecting hole (8) is consistent with the length of the connector (7) and is two thirds of the length of the connecting section (2), the length of the extension rod (3) and the length of the top rod (4).

7. The extension bar structure for the extractor according to any one of claims 1 to 6, wherein: the diameter of the connector (7) and the inner diameter of the connecting hole (8) are both half of the diameter of the extension rod (3).