CN112935141A

CN112935141A - Laborsaving alignment device of building foundation pile cushion cap reinforcing bar

Info

Publication number: CN112935141A
Application number: CN202110107947.2A
Authority: CN
Inventors: 袁宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-06-11

Abstract

The invention discloses a labor-saving steel bar straightening device for a building foundation pile bearing platform, relates to the technical field of steel bar straightening devices, and solves the problems that the prior straightening device is not ideal enough in optimized design of a positioning part of the device, and is troublesome and inconvenient to use and operate. A labor-saving straightening device for reinforcing steel bars of a building foundation pile bearing platform comprises a hexagonal main shaft, wherein a base is fixedly welded at the bottom of the hexagonal main shaft, a supporting frame is welded at the top end of the base, and a hexagonal transverse supporting shaft is fixedly welded inside the supporting frame; a sliding block is sleeved and slidably mounted on the hexagonal cross support shaft, and a row of tooth sheets are vertically arranged on the hexagonal cross support shaft; and a sliding sleeve is sleeved and welded on the bottom polished rod section of the hexagonal main shaft in a sliding manner. The two stop levers are matched with the two positioning frames for use, so that the whole device can be limited by the root sections of the steel bars, and the phenomenon that the whole device is greatly slid and displaced and separated from the steel bars in the straightening process to influence normal straightening operation is avoided.

Description

Laborsaving alignment device of building foundation pile cushion cap reinforcing bar

Technical Field

The invention relates to the technical field of reinforcing steel bar straightening devices, in particular to a labor-saving reinforcing steel bar straightening device for a building foundation pile bearing platform.

Background

The building engineering refers to the engineering entity formed by the construction of various building constructions and their auxiliary facilities and the installation activities of lines, pipes and equipment matched with them, wherein the building construction refers to the engineering entity which has top cover, beam column, wall and foundation and can form internal space and meet the requirements of people for production, living, study and public activities, the building engineering refers to the engineering entity which is carried out by various technical works and completed for new construction, reconstruction, extension of building constructions and auxiliary facilities, and the installation engineering of lines, pipes and equipment matched with them, also refers to the construction engineering of various buildings and buildings, also called the construction workload, and the investment amount of the part must be increased by the engineering material and can be realized by the construction activities. The steel bar processing equipment is required to be used in constructional engineering, and comprises a steel bar straightening machine, a steel bar bending machine, a steel bar cutting machine and the like.

For example, patent number is CN201810218105.2 discloses a reinforcing bar aligning device for building engineering, including the base, the left end fixedly connected with support column at base top, the quantity of support column is two, the left top fixedly connected with of support column runs through to the ring on support column right side, the left side swing joint of support column has the alignment section of thick bamboo that runs through and extend the support column right side outside, the direction thread groove has been seted up on the internal surface of alignment section of thick bamboo. This reinforcing bar aligning device for building engineering after first motor normally works for the alignment section of thick bamboo rotates, moves the reinforcing bar from a left side to the right side through the inside direction thread groove of alignment section of thick bamboo, reaches the purpose of straightening the reinforcing bar, replaces the drive mode of traditional conveyer belt form through the drive mode of fluted disc one and fluted disc two-phase meshing, when carrying out the transmission, the overheated condition of fluted disc one and fluted disc two can not appear, reaches the longer effect of life.

The existing straightening device is poor in compatibility, the bending part on sections with different heights of a steel bar cannot be pushed and straightened flexibly through lifting adjustment, the application is single, the optimal design of a positioning part of the device is not ideal enough, the whole device cannot be effectively positioned, the straightening device is easy to slide and shift greatly under the action of pushing stress and is separated from the steel bar, normal straightening operation is affected, and the positioning part is troublesome to use and operate.

Disclosure of Invention

The invention aims to provide a labor-saving straightening device for a steel bar of a building foundation pile bearing platform, and aims to solve the problems that the prior art proposes an ideal optimization design for a positioning part of the device, and the use and operation are troublesome and inconvenient.

In order to achieve the purpose, the invention provides the following technical scheme: a labor-saving straightening device for reinforcing steel bars of a building foundation pile bearing platform comprises a hexagonal main shaft, wherein the hexagonal main shaft comprises a base and a hexagonal cross brace shaft, the base is fixedly welded at the bottom of the hexagonal main shaft, a support frame is welded at the top end of the base, and the hexagonal cross brace shaft is fixedly welded inside the support frame; a sliding block is sleeved and slidably mounted on the hexagonal cross support shaft, and a row of tooth sheets are vertically arranged on the hexagonal cross support shaft; a sliding sleeve is sleeved and welded on the bottom polished rod section of the hexagonal main shaft in a sliding manner, and a positioning sleeve and a shaft sleeve are vertically and correspondingly sleeved and mounted on the rack section of the hexagonal main shaft in a sliding manner; the shaft sleeve comprises vertical support poles and a sliding ring, the vertical support poles are symmetrically welded at the top end of the shaft sleeve, a mounting disc and a sliding ring are correspondingly welded at the front and back of the top ends of the two vertical support poles, a hydraulic ram is tightly hoisted on the mounting disc, and the sliding ring is in sliding fit with the top end section of the hexagonal main shaft; the sliding sleeve comprises a handle frame, a handle frame is welded on the circumferential outer wall of the sliding sleeve in a supporting mode backwards, and an insertion rod penetrates through the bottom of the handle frame through a spring pushing device; the sliding block comprises stop rods, two stop rods are inserted in the lower half part of the sliding block in a penetrating mode, and two positioning frames are symmetrically inserted in the two stop rods in a sliding mode.

Preferably, the slider still includes the locating frame, the top support welding of slider has a locating frame, and two locating racks wear sliding fit with this locating frame, and two locating racks parallel slip are located the top of two pin.

Preferably, the sliding sleeve further comprises a cross-brace positioning shaft and a connecting rod, the sliding sleeve is welded with the cross-brace positioning shaft backwards, the cross-brace positioning shaft is connected with the connecting rod in a sliding and rotating mode, and the tail end of the connecting rod is correspondingly connected with the cross-brace connecting shaft at the rear ends of the two stop levers in a rotating mode.

Preferably, the shaft sleeve comprises an L-shaped sliding rod and a pull rod, the L-shaped sliding rod is installed on the rear half part of the shaft sleeve in a penetrating and sliding mode, a semicircular clamping sleeve is fixedly welded at the head end of the L-shaped sliding rod, and the tail end of the L-shaped sliding rod is rotatably connected with the pull rod; the top end of the shaft sleeve is pushed by a spring to be inserted with two insertion rods which are arranged at intervals up and down.

Preferably, the rear side position of the circumferential outer wall of the positioning sleeve is provided with an inserted rod through a spring pushing and inserting device, the circumferential outer wall of the positioning sleeve is further forwards supported and welded with a semicircular clamping sleeve, and the two semicircular clamping sleeves on the positioning sleeve and the shaft sleeve are vertically spaced and oppositely clamped on the bending section of the steel bar.

Preferably, the hydraulic ram comprises a shaft collar, a support shaft is fixed on the bottom section of the piston rod of the hydraulic ram in a threaded manner, a shaft collar is fixed at the front end of the support shaft in a welded manner, the shaft collar is slidably mounted on a hexagonal shaft section between the slip ring and the shaft sleeve, and the head end of the pull rod is correspondingly and rotatably connected with the shaft collar.

Preferably, the locating rack comprises inserting shafts, the locating rack is formed by welding L-shaped main body transverse supporting rods and L-shaped vertical supporting rods at the front ends together, the front ends of the two locating racks are welded with two inserting shafts in opposite directions, the head ends of the two inserting shafts are provided with one limit stop, and the two inserting shafts are correspondingly matched with fixing rings at the head ends of the two stopping rods in a penetrating and sliding manner.

Preferably, the positioning frame further comprises triangular wedge blocks and positioning shaft rods, one positioning shaft rod is installed on the tail end sections of the two positioning frames in a penetrating and penetrating mode through spring pushing, the two triangular wedge blocks are symmetrically welded on the tail end sections of the L-shaped main body transverse supporting rods of the two positioning frames, and the two triangular wedge blocks are in forward sliding corresponding to and in pushing contact with the two vertical supporting side plates of the positioning frame.

Compared with the prior art, the invention has the beneficial effects that:

1. the two stop levers are matched with the two positioning frames for use, so that the whole device can be limited by the root sections of the steel bars, and the phenomenon that the whole device slides forwards, backwards, leftwards and rightwards under the action of pushing stress and is separated from the steel bars in the straightening process to influence normal straightening operation is avoided;

2. the shaft sleeve and the positioning sleeve can slide up and down along the hexagonal spindle to adjust the height, so that the two semicircular clamping sleeves can be suitable for being matched with the bent steel bar section clamping sleeves with different heights and performing pushing and straightening, the compatibility is good, and the application is wide;

3. the two stop levers can drive the two positioning frames to slide forwards together when sliding forwards and inserting the stop, the two triangular wedge blocks are in extrusion fit with the inclined planes of the two vertical support side plates of the positioning frame, the two positioning frames can be extruded to slide oppositely when sliding forwards to the maximum stroke, and the two insertion shafts are linked to butt, so that the trouble of sliding butt joint of the two insertion shafts by extra manual force is saved, the use and operation steps of the stop positioning device are effectively simplified, and the stop positioning device is time-saving, labor-saving, rapid and convenient;

4. the sliding block can drive the two stop levers on the sliding block to slide left and right along the hexagonal cross bracing shaft, so that the stop levers can be flexibly adjusted in position to be conveniently butted with the root sections of the reinforcing steel bars in an inserting way.

Drawings

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

FIG. 2 is a schematic diagram of the rear three-dimensional structure of the present invention;

FIG. 3 is a schematic three-dimensional structure of the base of the present invention;

FIG. 4 is a schematic three-dimensional structure of a slider according to the present invention;

FIG. 5 is a schematic view of the bottom structure of the sleeve of the present invention;

FIG. 6 is a schematic view of a positioning sleeve according to the present invention;

FIG. 7 is a schematic view of the construction of the bushing of the present invention;

FIG. 8 is a schematic view of the mounting position of the L-shaped slider bar of the present invention;

in the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a hexagonal main shaft; 101. a base; 102. a hexagonal cross support shaft; 2. a slider; 201. a stop lever; 202. a positioning frame; 3. a sliding sleeve; 301. a frame; 302. a cross brace positioning shaft; 303. a connecting rod; 4. a positioning sleeve; 5. a shaft sleeve; 501. an L-shaped slide bar; 502. a pull rod; 503. a vertical supporting rod; 504. a slip ring; 6. a hydraulic jack; 601. a collar; 7. a positioning frame; 701. inserting a shaft; 702. a triangular wedge block; 703. positioning the shaft lever; 8. and (4) inserting the rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1 to 8, an embodiment of the present invention includes: a labor-saving straightening device for a steel bar of a building foundation pile bearing platform comprises a hexagonal main shaft 1, wherein the hexagonal main shaft 1 comprises a base 101 and a hexagonal cross bracing shaft 102, the base 101 is fixedly welded at the bottom of the hexagonal main shaft 1, a supporting frame is welded at the top end of the base 101, and the hexagonal cross bracing shaft 102 is fixedly welded inside the supporting frame; a sliding block 2 is slidably mounted on the hexagonal cross brace shaft 102 in a sleeved mode, and a row of tooth sheets are vertically arranged on the hexagonal cross brace shaft 102; a sliding sleeve 3 is sleeved and welded on a polished rod section at the bottom of the hexagonal main shaft 1 in a sliding manner, and a positioning sleeve 4 and a shaft sleeve 5 are sleeved and installed on a rack section of the hexagonal main shaft 1 in a sliding manner in an up-and-down corresponding manner; the shaft sleeve 5 comprises vertical support rods 503 and a slip ring 504, the vertical support rods 503 are symmetrically welded at the top end of the shaft sleeve 5, an installation disc and a slip ring 504 are correspondingly welded at the front and back of the top ends of the two vertical support rods 503, a hydraulic ram 6 is tightly hoisted on the installation disc, and the slip ring 504 is in sliding fit with the top end section of the hexagonal main shaft 1; the sliding sleeve 3 comprises a handle frame 301, the handle frame 301 is welded on the circumferential outer wall of the sliding sleeve 3 in a supporting mode backwards, and the bottom of the handle frame 301 is pushed by a spring to penetrate through and be inserted with an insertion rod 8; the sliding block 2 comprises a stop lever 201, two stop levers 201 are inserted in the lower half part of the sliding block 2 in a penetrating way, and two positioning frames 7 are symmetrically inserted in the two stop levers 201 in a sliding way; the sliding sleeve 3 further comprises a cross-brace positioning shaft 302 and a connecting rod 303, the sliding sleeve 3 is welded with the cross-brace positioning shaft 302 backwards, the cross-brace positioning shaft 302 is connected with the connecting rod 303 in a sleeved and sliding mode, the tail end of the connecting rod 303 is correspondingly connected with the brace connecting shafts at the rear ends of the two stop levers 201 in a rotating mode, the sliding sleeve 3, the connecting rod 303 and the two stop levers 201 form a crank sliding rod mechanism together, the sliding sleeve 3 can drive the two stop levers 201 to be inserted and sleeved on the root section of the steel bar in a sliding mode only by pushing the sliding sleeve 3 upwards, the connecting rod 303 is connected with the cross-brace positioning shaft 302 in a sleeved and sliding mode, sliding adjustment of the sliding block 2 can be matched, the two stop levers 201 can be inserted and positioned on the hexagonal main shaft 1, and the whole device is prevented from sliding and shifting left and right in the straightening process; an inserted rod 8 is inserted at the rear position of the circumferential outer wall of the positioning sleeve 4 through spring pushing, a semicircular clamping sleeve is forwards supported and welded on the circumferential outer wall of the positioning sleeve 4, the positioning sleeve 4 and the two semicircular clamping sleeves on the shaft sleeve 5 are oppositely clamped and sleeved on the bent section of the steel bar at intervals from top to bottom, and the positioning sleeve 4, the shaft sleeve 5 and the sliding sleeve 3 can be respectively inserted and positioned through the four inserted rods 8; the hydraulic ram 6 comprises a collar 601, a supporting shaft is fixed on the bottom section of a piston rod of the hydraulic ram 6 through threads, the front end of the supporting shaft is fixedly welded with the collar 601, the collar 601 is installed on a hexagonal shaft section between the sliding ring 504 and the shaft sleeve 5 in a sliding mode, the head end of the pull rod 502 is correspondingly connected with the collar 601 in a rotating mode, the collar 601, the pull rod 502 and the L-shaped sliding rod 501 jointly form a crank sliding rod mechanism, and through the crank sliding rod mechanism, the L-shaped sliding rod 501 is driven to slide back and forth through telescopic pushing of the hydraulic ram 6 to push and straighten the bent section of the steel bar.

Further, slider 2 still includes locating frame 202, and the top support welding of slider 2 has a locating frame 202, and two locating racks 7 wear sliding fit with this locating frame 202, and two locating racks 7 parallel sliding are located the top of two pin 201, and slider 2 can drive two pin 201 on it and follow hexagonal stull axle 102 horizontal slip, and the convenient root section plug bush butt joint with the reinforcing bar of adjustment position that makes pin 201 can be nimble.

Further, the shaft sleeve 5 comprises an L-shaped sliding rod 501 and a pull rod 502, the L-shaped sliding rod 501 is installed on the rear half portion of the shaft sleeve 5 in a penetrating and sliding mode, a semicircular clamping sleeve is fixedly welded at the head end of the L-shaped sliding rod 501, and the tail end of the L-shaped sliding rod 501 is rotatably connected with the pull rod 502; two inserted rods 8 which are spaced up and down are arranged at the top end of the shaft sleeve 5 in a sliding mode through spring ejection, the shaft sleeve 5 and the positioning sleeve 4 can slide up and down along the hexagonal spindle 1 to adjust the height, the two semicircular clamping sleeves can be suitable for being matched with bent steel bar section clamping sleeves with different heights and can be used for ejection straightening, compatibility is good, and application is wide.

Further, the locating rack 7 comprises inserting shafts 701, the whole locating rack 7 is formed by welding L-shaped main body transverse supporting rods and L-shaped vertical supporting rods at the front end together, the two inserting shafts 701 are welded at the front ends of the two locating racks 7 in an opposite direction, the head ends of the two inserting shafts 701 are provided with limit stops, the two inserting shafts 701 are correspondingly matched with fixing rings at the head ends of the two retaining rods 201 in a penetrating and sliding mode, the two locating racks 7 can be extruded and slid in opposite directions to enable the two inserting shafts 701 at the head ends of the two inserting shafts to abut against the front portion of the root section of the steel bar in an abutting mode, the six-edge main shaft 1 is limited in the front-back direction, and the situation that the whole device slides forwards and backwards under the action of pushing stress in the straightening process and is displaced and.

Further, the positioning frame 7 further comprises triangular wedges 702 and positioning shafts 703, the tail end sections of the two positioning frames 7 are provided with one positioning shaft 703 through spring pushing and inserting, the tail end sections of the two positioning frame 7L-shaped main body transverse supporting rods are symmetrically welded with the two triangular wedges 702, the two triangular wedges 702 slide forward and correspondingly contact with the two vertical supporting side plates of the positioning frame 202 in a pushing manner, the two blocking rods 201 can drive the two positioning frames 7 to slide forward together when sliding forward and blocking, the two triangular wedges 702 are in extrusion fit with the inclined surfaces of the two vertical supporting side plates of the positioning frame 202, when the two positioning frames 7 slide forward to the maximum stroke, the two positioning frames 7 can be extruded and slide oppositely, the abutting and butt joint of the two insertion shafts 701 can be completed in a linkage manner, the trouble of sliding and butt joint of the two insertion shafts 701 through extra manual force is omitted, the use and operation steps of the blocking positioning device are effectively simplified, time, labor and time are saved, and convenience are achieved, it should be noted that the two triangular wedges 702 are mounted at the tail ends of the two positioning frames 7, so that the two stop rods 201 are completely inserted and sleeved on the root section of the steel bar, and the two insertion shafts 701 start to butt and slide when sliding in front of the root section of the steel bar, thereby preventing the two insertion shafts 701 from being directly blocked on the steel bar when sliding in butt joint.

The working principle is as follows: the positioning sleeve 4 and the two semicircular cutting sleeves on the shaft sleeve 5 are vertically spaced and oppositely clamped on the bending sections of the reinforcing steel bars in a left-right opposite direction, the sliding sleeve 3, the connecting rod 303 and the two stop rods 201 jointly form a crank sliding rod mechanism, the sliding sleeve 3 can be pushed upwards to drive the two stop rods 201 to be slidingly inserted and sleeved on the root sections of the reinforcing steel bars, the sliding block 2 can drive the two stop rods 201 thereon to slide left and right along the hexagonally cross-bracing shaft 102, so that the stop rods 201 can be flexibly adjusted in position to be conveniently butted with the root sections of the reinforcing steel bars, the connecting rod 303 is slidingly connected with the cross-bracing positioning shaft 302 in a sleeved mode, the sliding adjustment of the sliding block 2 can be matched, the two stop rods 201 can be inserted and positioned on the hexagonally main shaft 1, the whole device is prevented from being slidingly displaced left and right in the straightening process, the two positioning frames 7 can be extruded and slid oppositely to butt the two insertion shafts 701 at the head ends against the front of the root sections of the reinforcing steel bars to limit the hexa, the device is prevented from sliding back and forth under the action of pushing stress and separating from a steel bar in the straightening process, the shaft sleeve 5 and the positioning sleeve 4 can slide up and down along the hexagonal main shaft 1 to adjust the height, so that two semicircular clamping sleeves can be suitable for matching with bent steel bar section clamping sleeves with different heights and performing pushing straightening, the compatibility is good, the application is wide, the positioning sleeve 4, the shaft sleeve 5 and the sliding sleeve 3 can be respectively inserted and positioned through four insertion rods 8, the shaft collar 601, the pull rod 502 and the L-shaped sliding rod 501 jointly form a crank sliding rod mechanism, through the crank sliding rod mechanism, the hydraulic top 6 can be pushed telescopically to drive the L-shaped sliding rod 501 to slide back and forth to push and straighten the bent section of the steel bar, the two stop rods 201 can drive the two positioning frames 7 to slide forward together when sliding and inserting and stopping, and through the extrusion matching of the two triangular wedge blocks 702 and the inclined planes of the two vertical supporting side plates, when the two positioning frames 7 slide forward to the maximum stroke, the two positioning frames 7 can be extruded to slide in opposite directions, the two insertion shafts 701 are linked to butt, the trouble that the two insertion shafts 701 are in sliding butt joint by extra manual force is avoided, it needs to be explained that the two triangular wedge blocks 702 are installed at the tail ends of the two positioning frames 7, so that the two stop levers 201 can be ensured to be completely inserted and sleeved on the root sections of the steel bars, and the two insertion shafts 701 start to butt joint and slide when sliding to be positioned in front of the root sections of the steel bars, and the two insertion shafts 701 are prevented from being directly blocked on the steel bars when sliding in butt joint.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a building foundation pile cushion cap reinforcing bar laborsaving alignment device which characterized in that: the hexagonal spindle comprises a hexagonal spindle (1), wherein the hexagonal spindle (1) comprises a base (101) and a hexagonal transverse supporting shaft (102), the base (101) is fixedly welded at the bottom of the hexagonal spindle (1), a supporting frame is welded at the top end of the base (101), and the hexagonal transverse supporting shaft (102) is fixedly welded inside the supporting frame; a sliding block (2) is sleeved on the hexagonal cross support shaft (102) in a sliding manner, and a row of tooth sheets are vertically arranged on the hexagonal cross support shaft (102); a sliding sleeve (3) is sleeved and welded on the bottom polished rod section of the hexagonal main shaft (1) in a sliding manner, and a positioning sleeve (4) and a shaft sleeve (5) are sleeved and installed on the rack section of the hexagonal main shaft (1) in a sliding manner in an up-and-down corresponding manner; the shaft sleeve (5) comprises vertical support rods (503) and a slip ring (504), the vertical support rods (503) are symmetrically welded at the top end of the shaft sleeve (5), a mounting disc and a slip ring (504) are correspondingly welded at the front and the back of the top ends of the two vertical support rods (503), a hydraulic ram (6) is tightly hoisted on the mounting disc, and the slip ring (504) is in sliding fit with the top end section of the hexagonal main shaft (1); the sliding sleeve (3) comprises a handle frame (301), the circumferential outer wall of the sliding sleeve (3) is backwards supported and welded with the handle frame (301), and the bottom of the handle frame (301) is pushed by a spring to penetrate through and be inserted with an inserted rod (8); the sliding block (2) comprises stop rods (201), two stop rods (201) penetrate through and are inserted into the lower half part of the sliding block (2), and two positioning frames (7) are symmetrically and slidably inserted into the two stop rods (201).

2. The labor-saving and straightening device for the steel bars of the building foundation pile cap of claim 1, wherein: the sliding block (2) further comprises a positioning frame (202), the top end of the sliding block (2) is supported and welded with the positioning frame (202), two positioning frames (7) are in sliding fit with the positioning frame (202), and the two positioning frames (7) slide in parallel to be located above the top ends of the two stop levers (201).

3. The labor-saving and straightening device for the steel bars of the building foundation pile cap of claim 1, wherein: sliding sleeve (3) still include stull location axle (302) and connecting rod (303), the welding has a stull location axle (302) to the back on sliding sleeve (3), and this stull location axle (302) goes up the cover and slides to rotate and is connected with a connecting rod (303), and the tail end of connecting rod (303) correspond and link the axle rotation with the propping of two pin (201) rear ends and link together.

4. The labor-saving and straightening device for the steel bars of the building foundation pile cap of claim 1, wherein: the shaft sleeve (5) comprises an L-shaped sliding rod (501) and a pull rod (502), the L-shaped sliding rod (501) is installed on the rear half part of the shaft sleeve (5) in a penetrating and sliding mode, a semicircular clamping sleeve is fixedly welded at the head end of the L-shaped sliding rod (501), and the tail end of the L-shaped sliding rod (501) is rotatably connected with the pull rod (502); the top end of the shaft sleeve (5) is pushed by a spring to be inserted with two insertion rods (8) which are arranged at intervals up and down.

5. The labor-saving and straightening device for the steel bars of the building foundation pile cap of claim 1, wherein: the rear side position of the outer wall of the circumference of the positioning sleeve (4) is provided with an inserted rod (8) through a spring pushing and inserting device, the outer wall of the circumference of the positioning sleeve (4) is also forwards supported and welded with a semicircular clamping sleeve, and the two semicircular clamping sleeves on the positioning sleeve (4) and the shaft sleeve (5) are bent sections which are oppositely clamped on the reinforcing steel bars at left and right at intervals.

6. The labor-saving and straightening device for the steel bars of the building foundation pile cap of claim 1, wherein: the hydraulic ram (6) comprises a shaft collar (601), a supporting shaft is fixed on the bottom section of a piston rod of the hydraulic ram (6) in a threaded mode, the front end of the supporting shaft is fixedly welded with the shaft collar (601), the shaft collar (601) is installed on a hexagonal shaft section between the sliding ring (504) and the shaft sleeve (5) in a sleeved and sliding mode, and the head end of the pull rod (502) is correspondingly connected with the shaft collar (601) in a rotating mode.

7. The labor-saving and straightening device for the steel bars of the building foundation pile cap of claim 1, wherein: the positioning frame (7) comprises inserting shafts (701), the positioning frame (7) is integrally formed by welding L-shaped main body transverse supporting rods and L-shaped vertical supporting rods at the front ends together, the front ends of the two positioning frames (7) are welded with two inserting shafts (701) in opposite directions, the head ends of the two inserting shafts (701) are provided with limit stops, and the two inserting shafts (701) are correspondingly matched with the fixing rings at the head ends of the two stop levers (201) in a penetrating and sliding mode.

8. The labor-saving and straightening device for the steel bars of the building foundation pile cap of claim 1, wherein: the positioning frame (7) further comprises triangular wedge blocks (702) and positioning shaft rods (703), one positioning shaft rod (703) is installed on the tail end sections of the two positioning frames (7) in an inserting mode through spring pushing, the two triangular wedge blocks (702) are symmetrically welded on the tail end sections of the L-shaped main body transverse supporting rods of the two positioning frames (7), and the two triangular wedge blocks (702) are in forward sliding corresponding to and in pushing contact with the two vertical supporting side plates of the positioning frame (202).