CN211680712U

CN211680712U - Welding seam assembly gap adjusting device

Info

Publication number: CN211680712U
Application number: CN202020220179.2U
Authority: CN
Inventors: 路相军; 张强; 董培科; 梁俊松; 温强; 黄群
Original assignee: China Nuclear Industry Fifth Construction Co Ltd
Current assignee: China Nuclear Industry Fifth Construction Co Ltd
Priority date: 2020-02-27
Filing date: 2020-02-27
Publication date: 2020-10-16
Anticipated expiration: 2030-02-27

Abstract

The utility model provides a welding line assembly gap adjusting device, which comprises a screw rod, a first support and a second support; the screw rod is provided with a first thread part, a second thread part and a force application part positioned between the first thread part and the second thread part, and the thread turning directions of the first thread part and the second thread part are opposite and the thread shapes of the first thread part and the second thread part are symmetrical; the first support is provided with an internal thread matched with the thread of the first thread part and used for being inserted into the first thread part; the second support is provided with an internal thread matched with the thread of the second thread part and used for being inserted into the second thread part; the first support and the second support are used for being fixed on two workpieces to be welded in an assembly mode on two sides of a welding line respectively. The welding line group is to clearance adjustment device can reduce welding work load, improves the efficiency of construction, or makes the both sides by the even adjustment power of welded workpiece receive, or can provide bigger adjustment power.

Description

Welding seam assembly gap adjusting device

Technical Field

The utility model belongs to welding auxiliary device field, in particular to welding seam group is to clearance adjustment device.

Background

When the wall plates or the top plates of the structures such as the storage tank, the pressure container and the like are assembled and welded, the assembly gap between the two steel plates is large due to the fact that the steel plates are deformed in a certain radian, the forced assembly is large in time stress, and the welding seam groove assembly is difficult. The existing weld joint assembly method mainly depends on the machining precision of the radian of the steel plate, adopts tools such as chain blocks, clamps, round pins and the like, is assisted by hammering to carry out forced assembly, needs a large number of auxiliary tools, can be completed by matching 1 welder with several riveters, and has high equipment and labor investment; in addition, a large number of temporary accessories are welded on the product and hammering is used, so that certain damage can be caused to the product, and certain safety and quality risks also exist in hammering forced pairing.

The adjusting device for the gap between the two welded seam groups comprises two connecting plates, an adjusting bolt and an adjusting nut, wherein the two connecting plates are welded on the cylinders on the two sides of the welded seam and are respectively provided with a unthreaded hole for the adjusting bolt to pass through, and the two sides of the connecting plates are respectively provided with the adjusting nut to be connected with the adjusting bolt. When the gap of the weld assembly is adjusted, the adjusting nut is screwed to provide pulling force for pulling the cylinders on the two sides close.

The adjustment devices of this type provide a limited amount of adjustment force, and in addition the forces exerted on the webs or cylinders on both sides are not uniform enough, which takes more time to adjust the weld seam with a larger gap.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a welding seam group is to clearance adjustment device, its reducible welding work volume improves the efficiency of construction, perhaps makes both sides receive even adjustment power by the weldment, perhaps can provide bigger adjustment power.

The welding line assembly gap adjusting device for achieving the purpose comprises a screw, a first support and a second support; the screw rod is provided with a first thread part, a second thread part and a force application part positioned between the first thread part and the second thread part, and the thread turning directions of the first thread part and the second thread part are opposite and the thread shapes of the first thread part and the second thread part are symmetrical; the first support is provided with an internal thread matched with the thread of the first thread part and used for being inserted into the first thread part; the second support is provided with an internal thread matched with the thread of the second thread part and used for being inserted into the second thread part; the first support and the second support are used for being fixed on two workpieces to be welded in an assembly mode on two sides of a welding line respectively.

In one or more embodiments of the gap adjusting apparatus for a pair of weld joints, the threads of the first threaded portion and the second threaded portion are trapezoidal threads.

In one or more embodiments of the weld group pair gap adjusting device, the force applying portion is located at an intermediate position between the first threaded portion and the second threaded portion.

In one or more embodiments of the gap adjusting device for the weld assembly pair, the gap adjusting device for the weld assembly pair further includes a pry arm member, and the pry arm member is configured to be in transmission connection with the force application portion.

In one or more embodiments of the gap adjusting apparatus for a pair of weld joints, the force applying portion has a through hole perpendicular to an axial direction of the screw rod, and the pry arm member is inserted into the through hole to form the drivable connection.

In one or more embodiments of the gap adjusting apparatus for a pair of weld beads, the force applying portion has 2 through holes having different axial directions.

In one or more embodiments of the weld pair set-up gap setting apparatus, the lever member is a lever.

In one or more embodiments of the gap adjusting device for the weld assembly, the screw is formed by processing round steel, and the first support and the second support are formed by processing square steel or steel plates.

In one or more embodiments of the gap adjusting apparatus for a pair of weld beads, the force applying portion has planes parallel to the axial direction of the screw, the number of the planes is at least one pair, and each pair of the planes is parallel to each other.

In one or more embodiments of the weld pairing gap adjusting device, the two workpieces to be paired and welded are two parts of a storage tank or pressure vessel structure in the engineering construction field.

The beneficial effects of the foregoing technical scheme are:

the screw rod is inserted into the first support and the second support which are respectively fixed on two sides of the welding line, and the prying bar is in transmission connection with the force application part so as to allow external force to apply rotary torque on the screw rod through the prying bar; the pry bar is rotated, the two thread parts of the screw rod rotate simultaneously, the workpieces on two sides are driven to move simultaneously, therefore, the stress of the workpieces on two sides is more uniform, compared with the situation that a screwed nut is subjected to unilateral adjustment, the needed adjustment amount can be reached more quickly, the construction efficiency can be improved, the welding line group is quickly reduced or enlarged to the gap according to the thread fastening principle, the structure is simple, the number of auxiliary tools is small, the material and the processing cost are low, the welding workload and the damage to the product are small, the welding line group assembling process can be simplified, the labor intensity is reduced, the labor cost is saved, and meanwhile, the safety and the quality requirement can be met.

Drawings

The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of a weld set pair gap adjustment apparatus according to one or more embodiments.

Detailed Description

The following discloses many different embodiments or examples for implementing the subject technology described. Specific examples of components and arrangements are described below to simplify the present disclosure, but these are merely examples and are not intended to limit the scope of the present invention. For example, if a first feature is formed over or on a second feature described later in the specification, this may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact. Additionally, reference numerals and/or letters may be repeated among the various examples throughout this disclosure. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. Further, when a first element is described as being coupled or coupled to a second element, the description includes embodiments in which the first and second elements are directly coupled or coupled to each other, as well as embodiments in which one or more additional intervening elements are added to indirectly couple or couple the first and second elements to each other.

It is to be understood that the drawings are designed solely for purposes of illustration and not as an isometric view and should not be construed as limiting the scope of the invention, which is actually claimed. Further, the conversion methods in the different embodiments may be appropriately combined.

As shown in fig. 1, the weld group pair gap adjusting device includes a screw 1, a first support 2, a second support 3, and a crowbar 4. From a product form perspective, in one embodiment, the crowbar 4 is an option for a gap adjustment device for the weld set.

The screw 1 has a first screw portion 11, a second screw portion 12, and a biasing portion 13. The first thread part 11 and the second thread part 12 have opposite thread directions and symmetrical thread shapes. The biasing portion 13 is located between the first threaded portion 11 and the second threaded portion 12. The urging portion 13 has 2 through

holes

13a and 13b perpendicular to the axial direction of the screw 1, into which the pry bar 4 is inserted to form the drivable connection, the axial directions of the 2 through

holes

13a and 13b being different. The first seat 2 has an internal thread matching the thread of the first threaded portion 11 and the second seat 3 has an internal thread matching the thread of the second threaded portion 12.

During the use, insert first screw thread portion 11 and second screw thread portion 12 respectively in first support 2 and second support 3, fix first support 2 and second support 3 respectively on two

work pieces

5 and 6 of treating the butt weld of welding seam both sides with spot welding, insert crowbar 4 in one of them through-

hole

13a or 13b, rotate screw rod 1 through lever principle, adjust the welding seam group between two

work pieces

5 and 6 to the clearance, make it reach the easy butt weld condition of welding seam group, when one of them through-hole rotates to the position of inconvenient application of force, can insert crowbar 4 in another through-hole and rotate. For the condition of large deformation or long weld assembly, a plurality of weld assembly gap adjusting devices can be installed to carry out weld assembly adjustment.

The gap adjusting device for the welding line assembly is simple in structure, the number of auxiliary tools is small, the material and machining cost is low, the welding workload is small, the auxiliary tools are convenient to remove, and the damage to products is small. The threads of the first thread part 11 and the second thread part 12 are opposite in rotating direction and symmetrical in thread shape, the gap between the

workpieces

5 and 6 can be symmetrically reduced or enlarged by rotating the screw rod 1, the workpieces on two sides are more uniformly stressed, and the required adjustment amount can be quickly reached for single-side adjustment of a screwed nut, so that the construction efficiency can be improved, forced pairing through hammering is not needed, the welding line pairing process can be simplified, and the safety is improved. The stress at the two ends of the screw rod 1 is uniform, and the screw rod can bear large adjusting force. The prying bar 4 is in transmission connection with the force application part 13, so that external force is allowed to apply rotating torque on the screw rod 1 through the prying bar 3 to enable the screw rod 1 to rotate, compared with a nut wrench for manually rotating a nut, the prying bar can provide a longer force application arm, therefore, larger adjusting force can be obtained frequently, adjustment assembly with larger gaps can be performed quickly, labor time is saved, and labor intensity is reduced. Adopt above-mentioned welding seam group to clearance adjustment device, only need 1 welder and 1 general worker can accomplish the group of welding seam to clearance adjustment, can reduce labour cost, can satisfy safety and quality requirement simultaneously.

In some embodiments, the threads of the first threaded portion 11 and the second threaded portion 12 are both trapezoidal threads, which has good strength, transmission, and self-locking properties.

In some embodiments, the screw 1 may be processed by round steel, the first support 1 and the second support 2 may be processed by square steel or steel plate, and engineering excess material may be used for processing, so as to further reduce material and processing cost.

In some embodiments, the force application portion 13 is located at a middle position between the first thread portion 11 and the second thread portion 12 to make the force applied to both sides of the screw 1 more uniform.

In some embodiments, the force application part 13 may also be located at one end of the screw 1 to meet various requirements of operation space or operation convenience.

In some embodiments, the force application portion 13 may have planes parallel to the axial direction of the screw 1, the number of the planes is at least one pair, and each pair of the planes is parallel to each other, for a wrench to be engaged to rotate the screw 1; the plane may be a notch formed on the force application portion 13, or a side surface of a prism formed on the force application portion 13 parallel to the axis of the screw 1, or the like. Accordingly, the crowbar 4 is replaced by another crowbar member, for example, a spanner which is engaged with the force application portion 13, and a long sleeve which is sleeved on the spanner for extending the force arm.

In some embodiments, the two

workpieces

5, 6 are two parts of a tank or pressure vessel type structure in the field of engineering construction, such as mines, railways, tunnels, bridges, dams, power stations (e.g. nuclear power plants), docks, airports, stadiums, houses (e.g. factory buildings, theaters, hotels, shops, schools and houses). Compared with welded parts in other fields, the storage tank or pressure container type structure in the engineering construction field is large in size and high in required protection level, the gap adjusting device can quickly complete adjustment work through the welding line group, the time required by adjustment is shortened, and the damage possibility to a product is greatly reduced due to the fact that the two welded parts are evenly stressed.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention, all without departing from the content of the technical solution of the present invention, fall within the scope of protection defined by the claims of the present invention.

Claims

1. The welding line assembly gap adjusting device is characterized by comprising a screw, a first support and a second support;

the screw rod is provided with a first thread part, a second thread part and a force application part positioned between the first thread part and the second thread part, and the thread turning directions of the first thread part and the second thread part are opposite and the thread shapes of the first thread part and the second thread part are symmetrical;

the first support is provided with an internal thread matched with the thread of the first thread part and used for being inserted into the first thread part;

the second support is provided with an internal thread matched with the thread of the second thread part and used for being inserted into the second thread part;

the first support and the second support are used for being fixed on two workpieces to be welded in an assembly mode on two sides of a welding line respectively.

2. The weld pairing gap adjustment device of claim 1, wherein the threads of the first threaded portion and the second threaded portion are trapezoidal threads.

3. The weld pair gap adjustment device of claim 1, wherein the force application portion is located at an intermediate position between the first threaded portion and the second threaded portion.

4. The weld stack pair gap setting apparatus of claim 1, further comprising a pry member configured to be drivingly connected to the force application portion.

5. The weld pair gap adjustment device of claim 4, wherein the force application portion has a through hole perpendicular to the axial direction of the screw for insertion of the lever member to form the driveable connection.

6. The weld pair gap adjusting apparatus according to claim 5, wherein the force applying portion has 2 through holes having different axial directions.

7. The weld pair gap setting apparatus of claim 4, wherein the lever member is a crowbar.

8. The weld pairing gap adjustment device of claim 1, wherein the screw is machined from round steel, and the first support and the second support are machined from square steel or steel plate.

9. The weld pair gap adjusting apparatus according to claim 1, wherein the force applying portion has planes parallel to the axial direction of the screw, the number of the planes is at least one pair, and each pair of the planes is parallel to each other.

10. The weld pairing gap adjustment device according to any one of claims 1 to 9, wherein the two workpieces to be paired and welded are two parts of a structure such as a storage tank or a pressure vessel in the field of engineering construction.