CN112427692A - Bailey pin pulling-out device and pulling-out method - Google Patents

Abstract

The present invention provides a beret pin extraction device and a beret pin extraction method, wherein the device includes a screw rod and a support frame, and the support frame includes a support plate connected to the screw rod by a thread and a support plate connected with the screw rod. A cylindrical support arm in which the support plate is integrally formed; wherein a screw cap is fixedly connected at one end of the screw rod away from the cylindrical support arm, and a screw cap is provided at the end of the screw rod close to the cylindrical support arm. Pull out the clamp adapted to the belay pin; and, the clamp is accommodated inside the cylindrical support arm. By using the above invention, the beret pin can be pulled out from the beret hole on the beret sheet quickly and efficiently, thereby improving the work efficiency.

Description

Bailey pin extraction device and extraction method

technical field

The invention relates to the technical field of construction tool design, and more particularly, to a beret pin extraction device and extraction method.

Background technique

Bailey frame is also called Bailey sheet, Bailey beam or cross frame. It was first invented by a British engineer during World War II to interpret the need for rapid bridge erection during the war, and named after him. It can be used for road bridges, assembling gantry cranes, guide beams, bridge erecting machines, hanging baskets and other equipment. Widely used in highway, railway, urban bridge engineering. Among them, Bailey frame combined crane and steel bridge are the most widely used.

In the traditional beret structure, a beret is generally equipped with two pins, the 90 and 45 support pieces are matched with 4 to 6 bolts (usually 4), and each reinforcing chord is also equipped with two A pin and two reinforcing bolts, each with a male and female head. Bailey sheets are usually connected with Bailey pins in the longitudinal direction, and support frames in the transverse direction. The main beams of the Bailey sheets are generally connected by beams.

However, in the actual operation process, although the connection between the berets is longitudinally connected by the berets, because the berets and the berets are processed very closely, the error is only one tenth of a millimeter. After being used for a long time, the jack and the belay pin are slightly deformed or rusted. When the worker removes the belay beam with his bare hands, it is very time-consuming and laborious to pull out the belay pin. Low and unsafe, especially working at heights, is more dangerous.

Based on the above technical problems, there is an urgent need for a method that can significantly improve the efficient extraction of belay pins from belay chips.

SUMMARY OF THE INVENTION

In view of the above problems, the object of the present invention is to provide a beret pin extraction device, which can quickly and efficiently pull out the beret from the beret hole on the beret sheet, thereby improving work efficiency.

In order to achieve the above purpose, the present invention provides a Bailey pin extraction device, which includes a screw rod and a support frame, and the support frame includes a support plate connected to the screw rod by a screw thread, and a support plate integrally formed with the support plate. a cylindrical support arm; wherein,

A screw cap is fixedly connected at one end of the screw rod away from the cylindrical support arm, and a clamp adapted to the beret to be pulled is provided at the end of the screw rod close to the cylindrical support arm; and,

The clamp is accommodated inside the cylindrical support arm.

In addition, a preferred solution is that the clamp includes two clamping jaws arranged symmetrically to each other, an annular groove is opened at one end of the screw rod close to the cylindrical support arm, and a rotating ring is hinged in the annular groove, Both of the two clamping jaws are rotatably connected with the side wall of the rotating ring through a hinge.

In addition, a preferred solution is that, at one end of the two clamping jaws away from the rotating ring, a clamping knife adapted to the extraction opening on the to-be-pulled beret is integrally formed.

In addition, a preferred solution is that the inner walls of the two clamping jaws are arc-shaped structures, and are matched with the outer walls of the beret to be pulled out.

In addition, a preferred solution is that an operation port corresponding to the position of the clamp is opened on the side wall of the cylindrical support arm.

In addition, a preferred solution is that an adjustment hole is provided on the screw cap.

In addition, a preferred solution is that a sleeve is sleeved on the screw cap, and a rotating shaft adapted to an external electric drill chuck is integrally formed at the end of the sleeve away from the screw rod.

In addition, a preferred solution is that the screw cap has a square structure, the inner cavity of the sleeve has a square structure corresponding to the shape of the screw cap, and the screw cap is synchronized with the sleeve through the shape of the square structure.

On the other hand, the present invention also provides a method for pulling out the beret, using the aforementioned beret pulling device to pull out the beret; the method includes:

Abutting the cylindrical support arm on the Bailey beam section steel near the Bailey pin to be pulled out, and using the clamp to clamp and fix the Bailey pin;

Turn the steel rods pre-inserted into the adjustment holes to make the screw rods rotate;

With the rotation of the screw rod, the screw rod drives the The jig pulls the Bailey pin out of the pin hole in the Bailey beam.

The present invention also provides another beret pin extraction method, which utilizes the aforesaid beret pin extraction device to pull out the beret pin; the method includes:

Abutting the cylindrical support arm on the Bailey beam section steel near the Bailey pin to be pulled out, and using the clamp to clamp and fix the Bailey pin;

Start the electric drill connected with the screw cap through the rotating shaft in advance, so as to make the screw rod rotate;

With the rotation of the screw rod, the screw rod drives the The jig pulls the Bailey pin out of the pin hole in the Bailey beam.

According to the above technical content, it can be known that the present invention designs a set of Bailey pin pull-out device by itself, which can achieve the threaded connection between the screw rod and the support plate and the abutting effect between the cylindrical support arm and the Bailey beam steel. The force relationship quickly pulls out the beret from the pin hole of the bely beam to improve the disassembly work efficiency of the bely beam; in addition, by setting a sleeve adapted to the screw cap, the beray pin extraction device can be realized The connection with the electric drill can drive the screw rod to rotate through the rotation of the output shaft of the electric drill, so that the Bailey pin can be quickly pulled out from the pin hole of the Bailey beam, which further improves the work efficiency.

To achieve the above and related objects, one or more aspects of the present invention include the features hereinafter described in detail. The following description and accompanying drawings illustrate certain exemplary aspects of the invention in detail. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Furthermore, the present invention is intended to include all such aspects and their equivalents.

Description of drawings

Other objects and results of the present invention will become more apparent and readily understood by reference to the following description taken in conjunction with the accompanying drawings, and as the present invention is more fully understood. In the attached image:

1 is a schematic structural diagram of a Bailey pin extraction device according to an embodiment of the present invention;

2 is a cross-sectional view of a Bailey pin extraction device according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the connection between the Bailey pin extraction device and the electric drill according to an embodiment of the present invention;

4 is an enlarged partial cross-sectional view of a sleeve according to an embodiment of the present invention;

The reference numerals include: screw rod 11, screw cap 12, adjustment hole 121, support frame 13, support plate 131, cylindrical support arm 132, operation port 133, clamping jaw 14, clamping knife 141, hinge 142, rotating Ring 15 , annular groove 151 , sleeve 16 , rotating shaft 161 , Bailey pin 18 to be pulled out, pulling port 181 , Bailey beam steel 19 .

The same reference numbers indicate similar or corresponding features or functions throughout the drawings.

Detailed ways

In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It will be apparent, however, that the embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows a schematic structure of a beret pin extraction device according to an embodiment of the present invention, FIG. 2 shows a cross-sectional structure of a beret pin extraction device according to an embodiment of the present invention, and FIG. 3 is a schematic diagram of the structure according to the present invention. A schematic diagram of the connection between the Bailey pin extraction device of the embodiment and the electric drill, FIG. 4 shows a partial cross-sectional enlarged structure of the sleeve according to the embodiment of the present invention.

1 to 4 , the Bailey pin extraction device provided by the present invention includes a screw rod 11 and a support frame 13 for supporting and stabilizing. Specifically, the support frame 13 includes a screw thread and is connected to the screw rod 11 The support plate 131 (that is, the connection between the support plate 131 and the screw rod 11 through screw rotation) and the cylindrical support arm 132 integrally formed with the support plate 131; wherein, the screw rod 11 is fixedly connected at one end away from the cylindrical support arm 132 There is a screw cap 12 , and a clamp adapted to the beret 18 to be pulled out is provided at one end of the screw rod 11 close to the cylindrical support arm 132 ; and the clamp is accommodated inside the cylindrical support arm 132 .

In the actual use process, the cylindrical support arm 132 needs to be abutted on the Bailey beam steel 19 near the Bailey pin 18 to be pulled out, so as to realize the positioning of the cylindrical support arm 132; The pull-out opening is locked and fixed; rotating the screw cap 12 drives the screw rod 11 to rotate (the direction of rotation is determined according to the actual situation). Due to the abutting force relationship between 132 and the Bailey beam steel 19, the cylindrical support arm 132 will not rotate with the screw rod 11, therefore, the screw rod 11 will perform a spiral upward movement on the support frame 13 ( Movement away from the Bailey beam), as the screw rod 11 moves away from the Bailey beam, it will drive the clamp to pull out the Bailey pin from the pin hole of the Bailey beam. It can avoid directly pulling out the beret pin by hand, which can significantly improve work efficiency while saving labor.

Specifically, in order to realize the clamping of the belay pin by the clamp, the clamp may include two clamping jaws 14 (or a plurality of clamping jaws 14 arranged at equal intervals) symmetrically opposite to each other. The annular groove 151 (not shown in the figure) is hingedly connected with the rotating ring 15 in the annular groove 151 , and the two clamping jaws 14 are rotatably connected to the rotating ring 15 through the hinge 142 . By arranging the rotating ring 15 between the clamping jaw 14 and the screw rod 11 , the clamping jaw 14 can be rotated with the screw rod 11 , thereby prolonging the service life of the clamping jaw 14 . In addition, by arranging the clamping jaws 14 in a way that the hinge 142 is rotatably connected with the rotating ring 15, the clamping jaws 14 can be opened and closed, and the clamping and fixing of the beret pins by the clamping jaws 14 can be realized.

In addition, in order to improve the clamping effect of the clamping jaws 14 on the belay pin and prevent the clamping jaws 14 from being separated from the belay pin during the extraction process, the ends of the two clamping jaws 14 away from the rotating ring 15 are integrally formed with a connection to be pulled out. The clamping knife 141 is adapted to the pulling opening 181 on the Bailey pin 18. During use, the clamping knife 141 can be inserted into the pulling opening 181 to realize the clamping and fixing of the Bailey pin by the clamping jaw 14.

In addition, in order to make the clamping jaws 14 adapt to different diameters of beret pins, the inner walls of the two clamping jaws 14 are arc-shaped. It also has an arc structure (the diameter of the Bailey pin 18 to be pulled out is smaller than the diameter of the clamping jaw 14), and the inner wall of the arc structure and the outer wall of the arc structure can be matched.

It should be noted that, since the clamp is arranged inside the cylindrical support arm 132, in order to manually clamp and fix the clamp and the Bailey pin, the side wall of the cylindrical support arm 132 can be provided with a clamp corresponding to the position of the clamp. The operation port 133 is used for clamping and fixing the clamp and the Bailey pin by inserting the hand into the cylindrical support arm 132 through the operation port 133 during the actual operation.

In addition, in order to further improve the work efficiency, an adjustment hole 121 can be opened on the screw cap 12. In the actual use process, the steel rod is first inserted into the adjustment hole 121, and the screw rod 11 can be driven to rotate by turning the steel rod.

Of course, a sleeve 16 can also be sleeved on the screw cap 12 , and a rotating shaft 161 adapted to the chuck of the external electric drill 17 is integrally formed at the end of the sleeve 16 away from the screw rod 11 . In the actual use process, starting the electric drill 17 connected with the screw cap 12 through the rotating shaft 161 in advance can drive the screw rod 11 to rotate.

It should be noted that, in order to ensure the synchronous movement of the screw cap 12 and the sleeve 16, the screw cap 12 has a square structure, the inner cavity of the sleeve 16 has a square structure corresponding to the shape of the screw cap 12, and the screw cap 12 passes through the shape of the square structure and the sleeve. The barrels 16 are synchronized. Of course, the inner cavity of the screw cap 12 and the sleeve 16 is not limited to a square structure, such as a triangular prism structure.

In addition, based on the structure of the above-mentioned Bailey pin extraction device, the present invention also provides a Bailey pin extraction method, which utilizes the aforementioned Bailey pin extraction device to pull out the Bailey pin; the method includes:

Abut the cylindrical support arm 132 on the Bailey beam section steel 19 near the Bailey pin 18 to be pulled out, and use a clamp to clamp and fix the Bailey pin;

Turn the steel bar that is pre-inserted into the adjustment hole 121 to make the screw rod 11 rotate;

With the rotation of the screw rod 11, based on the screw connection between the screw rod 11 and the support plate 131 and the abutting force relationship between the cylindrical support arm 132 and the Bailey beam steel 19, the screw rod 11 drives the clamp to The Bailey pin is pulled out of the pin hole in the Bailey beam.

On the other hand, the present invention also provides another method for pulling out the beray pin, which utilizes the aforementioned belay pin pulling device to pull out the belay pin; the method includes:

Abut the cylindrical support arm 132 on the Bailey beam section steel 19 near the Bailey pin 18 to be pulled out, and use a clamp to clamp and fix the Bailey pin;

Start the electric drill 17 connected with the screw cap 12 through the rotating shaft 161 in advance to make the screw rod 11 rotate;

With the rotation of the screw rod 11, based on the screw connection between the screw rod 11 and the support plate 131 and the abutting force relationship between the cylindrical support arm 132 and the Bailey beam steel 19, the screw rod 11 drives the clamp to The Bailey pin is pulled out of the pin hole in the Bailey beam.

In the actual working process, the above two methods of pulling out the beret can be selected according to the actual situation. If there is equipment such as electric drill 17, choose the second method of pulling out the Bailey pin.

In addition, in the process of making the beret pin extraction device, it can be made by using local materials. The screw rod 11 is a bolt with a diameter of 40mm and a length of 360mm, the full thread pitch is 1.5mm, and the nut is 60*60 * The 60mm cube is integrally formed with the screw rod 11, and an adjustment hole 121 with a diameter of 20mm is opened on the side of the nut to pass the steel rod. The front end of the screw rod 11 is processed into an annular gap (annular groove 151), the gap is 15mm deep and 20mm wide. The front uses a cylindrical rotating ring 15 and a height of 20mm. The rotating ring 15 on the top of the fixture is hinged on both sides with the fixture, using a hinge 142, the fixture The length is 80mm, the section is arc-shaped, the wall thickness is 20mm, the height of the clamping jaw 14 is 10 mm, and the inner arc of the clamping jaw 14 matches the diameter of the pull-out opening 181 of the beret pin. Bailey pins are generally 440mm in diameter, 150mm long, 181 deep, 10mm wide, and fit with the jaws 14 of the fixture. The cylindrical support arm 132 has a diameter of 100mm and a wall thickness of 20mm. There are symmetrical openings (operation ports 133 ) with a width of 50 mm and a length of 150 mm on both sides of the front end of the cylindrical support arm 132 , and the entire cylindrical support wall has a horseshoe-shaped structure. The support plate 131 is 40mm thick, and the support arm is 500mm long. To ensure the strength of the whole device, all parts can be made of Q235 steel.

In the actual operation process, the safety pin of the beret 18 to be pulled out is first released, and the clamping knife 141 of the clamping jaw 14 at the front end of the fixture is used to clamp the pulling port 181 of the beret 18 to be pulled out, and the operation port 133 The clamp is operated and adjusted, the cylindrical support arm 132 is against the Bailey beam steel 19, the rotating shaft 161 of the sleeve 16 is connected with the electric drill 17, the square mouth sleeve of the sleeve 16 is inserted into the square screw cap 12, and the Turn the switch of the electric drill 17 to the counterclockwise direction, start the electric drill 17, the screw rod 11 moves away from the Bailey beam, and slowly pull out the Bailey pin from the Bailey beam. It can improve the safety of aerial work, save labor and effort, operate quickly, and have low noise. If there is no electricity, you can also use a steel bar with a diameter of 20mm and a length of 500mm, insert one end into the adjustment hole 121 of the screw cap 12, and rotate the steel bar counterclockwise to pull out the beret.

According to the content of the above-mentioned embodiment, the present invention can design a set of Bailey pin extraction device by itself, and can pass the screw connection relationship between the screw rod 11 and the support plate 131 and the cylindrical support arm 132 and the Bailey beam steel 19. The abutting force relationship between them quickly pulls out the Bailey pin from the pin hole of the Bailey beam, so as to improve the disassembly work efficiency of the Bailey beam; To realize the connection between the belay pin pulling device and the electric drill 17, the rotation of the output shaft of the electric drill 17 can drive the screw rod 11 to rotate, so that the belay pin can be quickly pulled out from the pin hole of the belay beam, which further improves the work. efficiency.

The Bailey pin extraction device and extraction method according to the present invention have been described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various improvements can be made to the beret pin extraction device and extraction method provided by the present invention without departing from the content of the present invention. Therefore, the protection scope of the present invention should be determined by the contents of the appended claims.

Claims (10)

1. A Bailey pin extraction device, comprising a screw rod and a support frame, wherein the support frame comprises a support plate connected with a screw thread on the screw rod and a cylindrical shape integrally formed with the support plate. support arm; wherein, A screw cap is fixedly connected at one end of the screw rod away from the cylindrical support arm, and a clamp adapted to the beret to be pulled is provided at the end of the screw rod close to the cylindrical support arm; and, The clamp is accommodated inside the cylindrical support arm. 2. The Bailey pin extraction device according to claim 1, characterized in that, The clamp includes two clamping jaws arranged symmetrically to each other, an annular groove is opened at one end of the screw rod close to the cylindrical support arm, and a rotating ring is hinged in the annular groove, and the two clamping jaws are both. It is rotatably connected with the side wall of the rotating ring through a hinge. 3. The beret pin extraction device according to claim 2, characterized in that, At one end of the two clamping jaws away from the rotating ring, a clamping knife adapted to the pulling opening on the beret to be pulled out is integrally formed. 4. The beret pin extraction device according to claim 2, characterized in that, The inner walls of the two clamping jaws are arc-shaped structures, and are matched with the outer walls of the beret to be pulled out. 5. The beret pin extraction device of claim 1, wherein An operation port corresponding to the position of the clamp is opened on the side wall of the cylindrical support arm. 6. The beret pin extraction device according to any one of claims 1 to 5, characterized in that, An adjustment hole is opened on the screw cap. 7. The Bailey pin extraction device according to any one of claims 1 to 5, characterized in that: A sleeve is sleeved on the screw cap, and a rotating shaft adapted to an external electric drill is integrally formed at one end of the sleeve away from the screw rod. 8. The beret pin extraction device of claim 7, wherein The screw cap is in a square structure, the inner cavity of the sleeve is in a square structure corresponding to the shape of the screw cap, and the screw cap is synchronized with the sleeve through the shape of the square structure. 9. A method for pulling out the beret pin, characterized in that, utilizing the beret pin pulling device as claimed in claim 6 to pull out the beret pin; the method comprises: Abutting the cylindrical support arm on the Bailey beam section steel near the Bailey pin to be pulled out, and using the clamp to clamp and fix the Bailey pin; Turn the steel rods pre-inserted into the adjustment holes to make the screw rods rotate; With the rotation of the screw rod, based on the screw connection relationship between the screw rod and the support plate and the abutting force relationship between the cylindrical support arm and the Bailey beam steel, the The screw rod drives the clamp to pull out the Bailey pin from the pin hole of the Bailey beam. 10. A method for pulling out the beret pin, characterized in that the beret pin is pulled out by utilizing the beret pin pulling device as claimed in claim 8; the method comprises: Abutting the cylindrical support arm on the Bailey beam section steel near the Bailey pin to be pulled out, and using the clamp to clamp and fix the Bailey pin; Start the electric drill connected with the screw cap through the rotating shaft in advance, so as to make the screw rod rotate; With the rotation of the screw rod, based on the screw connection relationship between the screw rod and the support plate and the abutting force relationship between the cylindrical support arm and the Bailey beam steel, the The screw rod drives the clamp to pull out the Bailey pin from the pin hole of the Bailey beam.

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