CN217304653U

CN217304653U - Local-pressure single-shaft bearing capacity test device for welded box type steel pipe concrete combined member

Info

Publication number: CN217304653U
Application number: CN202220282385.5U
Authority: CN
Inventors: 任东平; 王超; 李�杰; 王得军; 任猛; 高常海; 张华�; 宋浩元; 贾成楠
Original assignee: China Railway 20th Bureau Group Municipal Engineering Co Ltd
Current assignee: China Railway 20th Bureau Group Municipal Engineering Co Ltd
Priority date: 2022-02-11
Filing date: 2022-02-11
Publication date: 2022-08-26
Anticipated expiration: 2032-02-11

Abstract

The utility model belongs to the technical field of bearing capacity test devices, in particular to a local pressure uniaxial bearing capacity test device for welded box type steel pipe concrete combined members, which comprises a test device body, wherein guide rail frames are fixed on two sides of the inner lower end of the test device body, a support rod is connected in the guide rail frames in a sliding manner, a support is fixed on the bottom of the support rod, a first shaft rod is rotatably connected on the upper part of the inner part of the guide rail frame, a first eccentric gear is fixed on the outer wall of the middle part of the first shaft rod, first guide wheels are fixed on the outer walls of the two sides of the first shaft rod, a second shaft rod is rotatably connected between the support rods at the two ends, a second eccentric gear is fixed on the outer wall of the middle part of the second shaft rod, the second eccentric gear is meshed with the first eccentric gear for transmission, second guide wheels are fixed on the outer walls of the two sides of the second shaft rod, a jack is installed at the top of the test device body, and the problem that the common test device on the market easily causes shaking in the moment is solved, and the disassembly, assembly and maintenance of the jack are not convenient.

Description

Local-pressure single-shaft bearing capacity test device for welded box type steel pipe concrete combined member

Technical Field

The utility model belongs to the technical field of the bearing capacity test device, concretely relates to weld box type steel pipe concrete composite member presses unipolar bearing capacity test device partially.

Background

In actual engineering, the load bearing modes of the steel pipe concrete structure are various, and local compression is a common stress condition in the engineering structure. In actual engineering, when the steel pipe concrete serves as a girder bridge pier or a lower bearing member of a rigid frame, a net frame or an arch structure, local compression load working conditions can be seen; in order to ensure that the built bridge meets the design and use requirements, whether the bearing capacity of the pier can meet the standard or not can be tested by using a jack and other simulation materials before the bridge is built, so that potential safety hazards are eliminated as much as possible, but common test devices in the market are easy to shake during testing, and the jack is inconvenient to disassemble, assemble and repair; in order to solve the problem of the existing bearing capacity test device exposed in the using process, the bearing capacity test device needs to be structurally improved and optimized.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned problem that exists among the prior art, the utility model provides a weld box type steel pipe concrete composite member presses unipolar bearing capacity test device partially, has the device and rocks when avoiding experimental, and the jack dismouting of being not convenient for overhauls's characteristics.

In order to achieve the above object, the utility model provides a following technical scheme: the local-pressure single-shaft bearing capacity testing device for the welded box type steel pipe concrete combined member comprises a testing device body, wherein guide rail frames are fixed to two sides of the lower end of the inside of the testing device body, supporting rods are connected to the inside of each guide rail frame in a sliding mode, supports are fixed to the bottoms of the supporting rods, a first shaft rod is connected to the upper portion of the inside of each guide rail frame in a rotating mode, first eccentric gears are fixed to the outer walls of the middle of the first shaft rod, first guide wheels are fixed to the outer walls of the two sides of the first shaft rod, two ends of each first guide wheel are connected between the supporting rods in a rotating mode, second shaft rods are fixed to the outer walls of the middle of the second shaft rod, second eccentric gears are meshed with the first eccentric gears and are in transmission, second guide wheels are fixed to the outer walls of the two sides of the second shaft rod, and jacks are installed at the top of the testing device body.

As the utility model discloses a preferred technical scheme of welding box type steel pipe concrete composite member presses unipolar bearing capacity test device partially, two spouts, two have been seted up to the upper end of test device body sliding connection has two splint between the spout, the inside central authorities of test device body rotate and are connected with the bull stick, the both ends of bull stick are rotated and are connected with the connecting rod, and the other end of connecting rod and the middle part of splint rotate to be connected, the inside threaded connection of one end of test device body has the lead screw, and the one end of lead screw rotates with splint to be connected, the outer end fixedly connected with knob of lead screw.

As the utility model discloses a welding box shaped steel pipe concrete composite member presses unipolar bearing capacity test device preferred technical scheme partially, the second guide pulley contacts with first guide pulley mutually.

As the utility model discloses a preferred technical scheme of welding box shaped steel pipe concrete composite member presses unipolar bearing capacity test device partially, the front end fixedly connected with sprocket of first axostylus axostyle is connected with the chain between the sprocket at both ends, the motor is installed to the inner wall of test device body, and the output of motor and wherein one end first axostylus axostyle fixed connection.

As the utility model discloses a welding box type steel pipe concrete composite member presses unipolar bearing capacity test device preferred technical scheme partially, the mounting hole has been seted up at four angles of base of jack, the top of test device body is equipped with four installation pins that correspond the mounting hole respectively.

As the utility model discloses a welding box shaped steel pipe concrete composite member presses unipolar bearing capacity test device preferred technical scheme partially, the inside of first guide pulley and second guide pulley is equipped with the trompil.

Compared with the prior art, the beneficial effects of the utility model are that: drive first eccentric gear through first axostylus axostyle and rotate, first eccentric gear passes through second eccentric gear and drives the second axostylus axostyle, and the second axostylus axostyle drives branch and slides along the inside of guide rail frame, and then drives the support and go up and down, and after contact with ground through the support, can avoid the device to rock when experimental, cause the influence to the experiment.

The rotary knob is matched with the screw rod to drive the clamping plate at one end to move, the clamping plate drives the clamping plate at the other end to move through the connecting rod matched with the rotating rod, the clamping plates at the two ends move in the opposite direction, clamping and opening are achieved, the jack can be clamped and fixed, and the jack can be conveniently disassembled and then maintained.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic perspective view of the front end of the present invention;

fig. 2 is a schematic perspective view of the rear end of the present invention;

FIG. 3 is a schematic structural view of the lower end of the interior of the testing device body of the present invention;

FIG. 4 is a schematic plan view of the upper end of the interior of the testing device body of the present invention;

in the figure: 1. a test device body; 2. a guide rail bracket; 3. a strut; 4. a support; 5. a first shaft lever; 6. a first eccentric gear; 7. a first guide wheel; 8. a second shaft lever; 9. a second eccentric gear; 10. a second guide wheel; 11. a sprocket; 12. a chain; 13. a motor; 14. a jack; 15. a chute; 16. a splint; 17. a rotating rod; 18. a connecting rod; 19. a screw rod; 20. a knob; 21. and (6) installing a pin.

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.

Examples

Referring to fig. 1-4, the present invention provides the following technical solutions: the local-pressure single-shaft bearing capacity testing device for the welded box type steel pipe concrete combined member comprises a testing device body 1, wherein guide rail frames 2 are fixed on two sides of the lower end inside the testing device body 1, supporting rods 3 are slidably connected inside the guide rail frames 2, supports 4 are fixed at the bottoms of the supporting rods 3, a first shaft rod 5 is rotatably connected above the inside of each guide rail frame 2, a first eccentric gear 6 is fixed on the outer wall of the middle part of the first shaft rod 5, first guide wheels 7 are fixed on the outer walls of two sides of the first shaft rod 5, a second shaft rod 8 is rotatably connected between the supporting rods 3 at two ends, a second eccentric gear 9 is fixed on the outer wall of the middle part of the second shaft rod 8, the second eccentric gear 9 is in meshing transmission with the first eccentric gear 6, second guide wheels 10 are fixed on the outer walls of two sides of the second shaft rod 8, a jack 14 is installed at the top of the testing device body 1, in the embodiment, the first shaft rod 5 drives the first eccentric gear 6 to rotate, first eccentric gear 6 drives second axostylus axostyle 8 through second eccentric gear 9, and second axostylus axostyle 8 drives branch 3 and slides along the inside of guide rail frame 2, and then drives support 4 and go up and down, contacts the back through support 4 and ground, can avoid the device to rock when experimental, causes the influence to the experiment.

Specifically, two chutes 15 have been seted up to the upper end of test device body 1, two splint 16 of sliding connection between two chutes 15, the inside central authorities of test device body 1 rotate and are connected with bull stick 17, the both ends of bull stick 17 rotate and are connected with connecting rod 18, and the other end of connecting rod 18 rotates with the middle part of splint 16 and is connected, the inside threaded connection of one end of test device body 1 has lead screw 19, and the one end of lead screw 19 rotates with splint 16 and is connected, the outer end fixedly connected with knob 20 of lead screw 19, splint 16 that drives one end through rotatory knob 20 cooperation lead screw 19 in this embodiment removes, splint 16 drives the splint 16 of the other end through connecting rod 18 cooperation bull stick 17 and removes, make the splint 16 at both ends be reverse motion, the realization is pressed from both sides tightly and opens, and then can centre gripping fixed jack 14.

Specifically, the second guide wheel 10 and the first guide wheel 7 contact with each other, and in the embodiment, the outer edge of the first guide wheel 7 is concave, and the outer edge of the second guide wheel 10 is convex, so that the second guide wheel does not deviate during transmission.

Specifically, the front end fixedly connected with sprocket 11 of first axostylus axostyle 5, be connected with chain 12 between the sprocket 11 at both ends, motor 13 is installed to the inner wall of test device body 1, and motor 13's output and the 5 fixed connection of first axostylus axostyle of one of them end, the output through motor 13 in this embodiment drives the 5 rotations of first axostylus axostyle of one end, first axostylus axostyle 5 drives the 5 rotations of first axostylus axostyle of the other end through sprocket 11 cooperation chain 12 for synchronous lift is realized to both sides.

Specifically, the mounting hole has been seted up at four angles of base of jack 14, and the top of test device body 1 is equipped with four mounting pins 21 that correspond the mounting hole respectively, and through inserting corresponding mounting pin 21 respectively with the mounting hole during installation jack 14 in this embodiment, fixes a position before fixed jack 14, avoids the offset.

Specifically, the first guide wheel 7 and the second guide wheel 10 are internally provided with holes, so that the material can be saved and the cost can be reduced in the embodiment; the weight is reduced, and the consumption is reduced.

The utility model discloses a theory of operation and use flow: firstly, when the jack 14 is installed, the corresponding installation pins 21 are respectively inserted into the installation holes, so that the fixed jack 14 is positioned in advance, and the position deviation is avoided; then, the rotary knob 20 is matched with the screw rod 19 to drive the clamping plate 16 at one end to move, the clamping plate 16 is matched with the rotating rod 17 through the connecting rod 18 to drive the clamping plate 16 at the other end to move, so that the clamping plates 16 at the two ends move in opposite directions, and the jack 14 can be clamped and fixed; at last, the output through motor 13 drives the first axostylus axostyle 5 of one end and rotates, first axostylus axostyle 5 drives the first axostylus axostyle 5 rotation of the other end through sprocket 11 cooperation chain 12, drive first eccentric gear 6 through first axostylus axostyle 5 and rotate, first eccentric gear 6 drives second axostylus axostyle 8 through second eccentric gear 9, second axostylus axostyle 8 drives branch 3 along the inside slip of guide rail frame 2, and then drive support 4 and go up and down, after contacting with ground through support 4, can avoid the device to rock when experimental, cause the influence to the experiment.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Welding box shaped steel pipe concrete composite member presses unipolar bearing capacity test device in office, including test device body (1), its characterized in that: guide rail brackets (2) are fixed on two sides of the lower end inside the test device body (1), a supporting rod (3) is connected inside the guide rail frame (2) in a sliding way, a support seat (4) is fixed at the bottom of the supporting rod (3), a first shaft lever (5) is rotatably connected to the upper part of the inner part of the guide rail bracket (2), a first eccentric gear (6) is fixed on the outer wall of the middle part of the first shaft lever (5), the outer walls of two sides of the first shaft lever (5) are fixed with first guide wheels (7), a second shaft lever (8) is rotatably connected between the support rods (3) at two ends, a second eccentric gear (9) is fixed on the outer wall of the middle part of the second shaft lever (8), and the second eccentric gear (9) is in meshed transmission with the first eccentric gear (6), the outer walls of two sides of the second shaft lever (8) are fixed with second guide wheels (10), and a jack (14) is installed at the top of the testing device body (1).

2. The welded box type steel pipe concrete composite member partial pressure uniaxial bearing capacity test device according to claim 1, characterized in that: two spout (15) have been seted up to the upper end of test device body (1), two sliding connection has two splint (16) between spout (15), the inside central authorities of test device body (1) rotate and are connected with bull stick (17), the both ends of bull stick (17) are rotated and are connected with connecting rod (18), and the other end of connecting rod (18) rotates with the middle part of splint (16) and is connected, the inside threaded connection of one end of test device body (1) has lead screw (19), and the one end of lead screw (19) rotates with splint (16) and is connected, the outer end fixedly connected with knob (20) of lead screw (19).

3. The welded box type steel pipe concrete composite member partial pressure uniaxial bearing capacity test device according to claim 1, characterized in that: the second guide wheel (10) is contacted with the first guide wheel (7).

4. The welded box type steel pipe concrete composite member partial pressure uniaxial bearing capacity test device according to claim 1, characterized in that: the chain wheel (11) is fixedly connected to the front end of the first shaft lever (5), a chain (12) is connected between the chain wheels (11) at the two ends, a motor (13) is installed on the inner wall of the testing device body (1), and the output end of the motor (13) is fixedly connected with the first shaft lever (5) at one end.

5. The welded box type steel pipe concrete composite member partial pressure uniaxial bearing capacity test device according to claim 1, characterized in that: four corners of the base of the jack (14) are provided with mounting holes, and the top of the test device body (1) is provided with four mounting pins (21) which respectively correspond to the mounting holes.

6. The welded box type steel pipe concrete composite member partial pressure uniaxial bearing capacity test device according to claim 1, characterized in that: and open holes are formed in the first guide wheel (7) and the second guide wheel (10).