CN218905816U - Tension rod locking device of sleeper prestressed tendon tensioning machine - Google Patents

Abstract

The utility model belongs to a tensioning device, in particular to a tensioning rod locking device of a sleeper prestressed tendon tensioning machine. The device is arranged on the main support and can move along the stretching or releasing direction; the horizontal sliding frame is fixed on the right side of the box body, the vertical sliding frame is arranged inside the horizontal sliding frame and is horizontally assembled with the horizontal sliding frame, the inner end of a second tension rod of the tensioning jack extends in the vertical sliding frame through the side wall of the box body and the rear end of the horizontal sliding frame, the connector is driven by a power source assembled on the vertical sliding frame to longitudinally move, clamping grooves coaxial with the second tension rod are respectively formed in two ends of the connector, and the clamping grooves are matched with the second tension rod and the tensioning end of a first tension rod on a sleeper die. The utility model effectively solves the technical problems of inconvenient adjustment, difficult disassembly and assembly and the like in the prior art, and has the advantages of convenient adjustment, stable and simple structure, accurate and quick operation and the like.

Description

Tension rod locking device of sleeper prestressed tendon tensioning machine

Technical Field

The utility model belongs to a tensioning device, in particular to a tensioning rod locking device of a sleeper prestressed tendon tensioning machine.

Background

At present, the paving range of railway concrete sleepers is gradually expanded in all countries of the world, and the prestressed integral sleeper is developed in most countries. Concrete sleeper is adopted in high-speed railway, passenger special line and existing main trunk line in China. The sleeper has the main advantages of large longitudinal and transverse resistance, sufficient stability, long service life, low cost, small maintenance workload and the like, and the sleeper bearing capacity can be designed according to different high-speed running conditions.

The prestressed concrete sleeper is a main component of railway track structure, and its production process can be divided into two types of long-line pedestal method and running water machine set method. At present, the technology of the long-line pedestal method is commonly adopted in western European countries such as law, italian, germany, english and the like. After the improved Hungary concrete sleeper flow machine set process of Soviet union is introduced from 1956 in China, a first prestressed concrete sleeper production line of China is built in Fengtai bridge factories in 1958, and 40 fixed production enterprises exist until now, and the flow machine set process is adopted in the production lines.

Along with the continuous development of the railway and development technology in China, the production level and the production practice of the concrete sleeper are greatly improved. Not only the annual output is greatly improved, but also the international advanced level of the automation and mechanization degree of the production process is reached.

With the continuous acceleration of sleeper retrofit, the sleeper has been changed from type I, which has been used for several years, to type II, type IIIa, type IIIb, which is basically updated once in 3 years, and newly built railways and maintenance of existing lines, which also require the simultaneous production of different sleepers; because of the factors of difference in specifications and production processes of sleepers of different types, continuous improvement of sleeper production precision requirements, continuous rising of labor force and the like, the existing sleeper production line and the newly-built production line are required to be both compatible with production of products of various types, and the traditional rough single type semiautomatic sleeper production line cannot be suitable for the development of sleepers and the demands of the current market.

As a key device on the production line, sleeper prestress construction equipment is the main target of the requirement. The production line flow which can adapt to the prestress construction of various types of sleepers and is suitable for a long-line method is designed to be compatible with the sleeper prestress construction; meanwhile, the requirements of high automation, high precision of prestress construction and the like are met, and the method is a key for adapting to sleeper development and market demands.

The sleeper prestress Shi Gongfen is formed by two links of prestress tensioning and prestress tensioning, the traditional prestress tensioning mechanism is only a single tensioning station arranged on a production line, and the linkage with the whole production line cannot be realized, so that the production line cannot realize automatic operation; meanwhile, because the production of the multi-model sleeper causes the difference of the appearance of sleeper moulds, the traditional stretching equipment can only be that the moulds are placed still, manual alignment is carried out by manpower, and a stretching device is connected manually, but the stretching operation of the prestressed tendons in the stretching process is completed, and other links are all manual operations, so that the stretching precision is low, and the data and information management cannot be perfected. With the continuous improvement of the existing automation level, the operation mode is more and more perfect in sleeper type and process requirements, the sleeper production cannot be adapted at present, the pre-stress construction accuracy which can reach the production process requirements is accurate, and the sleeper production line is suitable for a multi-type die and an automatic tensioning mechanism which is suitable for the automatic operation of a production line to perform the operation of the link. The key of the prestress construction quality depends on the safety and accuracy of the tensioning mechanism. The tensioning procedure and the supporting facilities are used as key procedures and supporting equipment in the tensioning procedure and the supporting facilities, are not only one of technical difficulties in the design and production processes, but also are important research and development directions in the field.

Patent documents retrieved by the applicant include:

the patent document with the patent number of 201519235115. X discloses a tension rod locking device of a sleeper prestressed tendon tensioning machine, which comprises an open strip-shaped box-shaped sleeper die composed of a plurality of plates, wherein an anchor cavity is reserved at the front end of an inner cavity of the sleeper die, a prestressed tendon clamp capable of moving back and forth is arranged at the rear end of the inner cavity of the sleeper die, the prestressed tendon clamp is also provided with anchor cavities, each anchor cavity is communicated with the inner cavity of the sleeper die, an anchor capable of sliding back and forth along the anchor is arranged in each anchor cavity, the length of the anchor is larger than the opening width of the anchor cavity, a plurality of baffle holes for hooping prestressed tendons with a head are formed in the anchor, a sliding screw rod penetrating through the rear end of the sleeper die is connected to the prestressed tendon clamp, a tension trolley capable of moving back and forth and up and down is arranged outside the sleeper die corresponding to the sliding screw rod, a center jack, a pressure sensor and a second anchor ring are arranged on the sliding screw rod, the sliding force sensor is arranged between the center jack and the second anchor ring, the center jack is connected with the center jack and the center jack, and the center jack is connected with the center jack. The problem is that the sliding screw rod and the penetrating jack are fixedly assembled, and the tensioning operation can be completed, but the sliding screw rod and the penetrating jack are inconvenient to assemble and disassemble, have large dead weight and are difficult to adjust; secondly, automatic and rapid operation is not easy to realize.

Disclosure of Invention

The utility model aims to provide a tensioning rod locking device of a sleeper prestressed tendon tensioning machine, which can effectively realize locking connection between a sleeper die tensioning rod and tensioning equipment so as to meet the tensioning construction requirement of sleeper die prestressed tendons.

The utility model has the following overall technical concept:

the tension rod locking device of the sleeper prestressed tendon tensioning machine is arranged on the main support and can move along the tensioning or releasing direction; the horizontal sliding frame is fixed on the right side of the box body, the vertical sliding frame is arranged in the horizontal sliding frame and is in sliding fit with a horizontal sliding groove formed in the horizontal sliding frame, the inner end of a second tension rod of the tensioning jack extends in the vertical sliding frame through the side wall of the box body and the rear end of the horizontal sliding frame, a connector longitudinally moves under the driving of a power source assembled on the vertical sliding frame, clamping grooves coaxial with the second tension rod are formed in two ends of the connector respectively, and the clamping grooves are matched with the second tension rod and the tensioning end of a first tension rod on a sleeper die.

The specific technical concept of the utility model is as follows:

the clamping groove is used for connecting the tensioning fixed ends of the first tension rod and the second tension rod, and is in n-shaped or door-shaped connection with the tension rod in order to better adapt to the tension rod and simplify the structure.

The main function of the power source assembled on the vertical sliding frame is to drive the connector to move longitudinally and linearly so as to connect and release the connector with the tensioning rod, wherein the power source can select various linear driving mechanisms including but not limited to a linear motor, a hydraulic cylinder, a screw feed mechanism, a parallelogram mechanism and the like, without departing from the technical essence of the utility model. The preferable technical implementation means is that a power source assembled on the vertical sliding frame is a vertical oil cylinder assembled on the top of the vertical sliding frame, and a connector is fixed at the action execution end of the lower part of the power source.

In order to facilitate the assembly of the vertical oil cylinder and the connector, the preferred technical implementation means is that the connector is fixed at the lower end of a piston rod of the vertical oil cylinder.

In order to facilitate the clamping of the clamping groove and the tension rod of the connector, the preferable technical implementation means is that the adjacent ends of the second tension rod and the first tension rod are bulged and are matched with the clamping groove.

In order to facilitate tensioning operation and prestress maintenance, a preferred technical implementation means is that a nut sleeve on a rotary motor arranged at the front part of the box body is matched with a nut on the first tension rod.

In order to simplify the structure and facilitate the installation of the components, the top of the vertical cylinder extends to the outside through the opening on the surface of the horizontal carriage.

The more preferable technical implementation means is that the opening is a slotted hole.

In order to facilitate the movable matching of the box body and the main support along the stretching direction, and further facilitate the adjustment of the position of the stretching rod so as to realize the matching with the connector, the preferable technical implementation means is that the horizontal oil cylinder drives the box body to slide on the guide rail of the main support along the stretching direction.

The tensioning jack in the utility model is the prior art, and is widely reported in patent literature and commercially available, and the applicant does not need to describe the structure here again.

In the description of the present utility model, the terms "rear", "right", "inner", "rear", "longitudinal", "top", "lower", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The technical progress of the utility model is that:

1. the utility model adopts the horizontal sliding frame and the vertical sliding frame which are matched with the box body as the main bearing frame of the device, firstly, the device can synchronously act with the box body, is easy to realize stable structure and is beneficial to the arrangement of the box body driving device; secondly, the connector can be conveniently moved and matched with the tension rod.

2. The connector is driven by the vertical oil cylinder, so that the operation is quick and the accuracy of the action completion is high on the premise of meeting specific requirements on prestress application, load holding, locking and the like in construction.

3. The structural design of the horizontal oil cylinder and the vertical oil cylinder can meet the requirement of accurate displacement stroke by setting the maximum stroke of the oil cylinder, and the structure is effectively simplified.

4. The clamping groove structure matched with the expansion end of the tension rod on the connector effectively realizes the accuracy and the rapidness of positioning and provides structural guarantee for the ordered tensioning construction.

5. The vertical sliding frame and the horizontal sliding frame are assembled in a sliding way through the horizontal sliding groove, so that the matching property with the stretching end of the stretching rod is improved.

Drawings

Fig. 1 is an outline view of the present utility model.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is a right side view of fig. 1.

Fig. 4 is an axial view of fig. 2.

Fig. 5 is a B-direction perspective view of fig. 2.

Fig. 6 is a schematic view of the present utility model applied to a sleeper prestress tensioner.

Fig. 7 is a perspective isometric view of fig. 6.

Reference numerals in the drawings are as follows:

1. a main support; 2. a case; 3. a rotary motor; 4. a vertical cylinder; 5. a horizontal carriage; 6. a vertical carriage; 7. tensioning jack; 8. sleeper die; 9. a first tension rod; 10. a connector; 11. a second tension rod; 12. and a horizontal oil cylinder.

Detailed Description

The present utility model will be further described with reference to the following examples, but should not be construed as limiting the utility model, and the scope of the utility model is defined by the appended claims, and any equivalents thereof may be substituted according to the description without departing from the scope of the utility model.

The whole conception of the embodiment is as shown in the figure, and the tension rod locking device of the sleeper prestressed tendon tensioning machine is arranged on the main bracket 1 and can move along the tensioning or releasing direction; the tensioning device comprises a box body 2 with a tensioning jack 7 fixed at the rear part, a horizontal sliding frame 5 is fixed on the right side of the box body 2 through a fastening member, a vertical sliding frame 6 is arranged inside the horizontal sliding frame 5 and is assembled with a horizontal sliding groove formed in the horizontal sliding frame through a sliding block in a sliding mode, the inner end of a second tensioning rod 11 of the tensioning jack 7 extends into the vertical sliding frame 6 through the side wall of the box body 2 and a hole formed in the rear end of the horizontal sliding frame 5, a connector 10 longitudinally moves under the driving of a power source assembled on the vertical sliding frame 6, the power source assembled on the vertical sliding frame 6 is a vertical oil cylinder 4 assembled at the top of the vertical sliding frame 6, and the lower end of a piston rod of the vertical oil cylinder 4 is fixedly provided with the connector 10. The two ends of the connector 10 are respectively provided with a clamping groove which is coaxial with the second tension rod 11, and the clamping grooves are matched with the second tension rod 11 and the tension ends of the first tension rod 9 on the sleeper die 8.

The clamping groove is n-shaped.

The second pull rod 11 bulges out from the adjacent end of the first pull rod 9 and is matched with the clamping groove.

The nut sleeve on the rotary motor 3 arranged at the front part of the box body 2 is matched with the nut on the first pull rod 9.

The top of the vertical cylinder 4 extends to the outside through an oblong hole in the surface of the horizontal carriage 5.

The horizontal cylinder 12 drives the box body 2 to be matched with the guide rail of the main support 1 in a sliding way along the stretching direction.

The present embodiment works as follows:

when stretching is needed, firstly, after the first pull rod 9 of the sleeper die 8 and the second pull rod 11 of the stretching jack 7 are coaxially positioned, the horizontal oil cylinder 12 pushes the box body 2 to be attached to the sleeper die 8; secondly, the rotary motor 3 is rotated anticlockwise until a nut sleeve assembled on the rotary motor is sleeved on a nut on the first pull rod 9; thirdly, the vertical oil cylinder 4 pushes the connector 10 to descend, and the clamping grooves are respectively inserted into positions from the neck ends of the rear sides of the stretching connection ends of the first stretching rod 9 and the second stretching rod 11; fourthly, synchronously tensioning the first pull rod 9 of the sleeper die 9 to a set force value and holding load by the tensioning jack 7; fifthly, the rotating motor 3 rotates clockwise at high speed to anchor the nut on the first pull rod 9.

When the oil is required to be released, firstly, the tensioning jack 7 discharges the load of the oil cavity through an oil way electromagnetic valve; secondly, the vertical oil cylinder 4 pushes the connector 10 to ascend, so that the tension rod is released in place; thirdly, the box body 2 is pushed to be opened by the horizontal oil cylinder 12; and fourthly, the tensioning jack 7 is used for feeding oil back through an oil way electromagnetic valve. The rotation motor 3 rotates anticlockwise at high speed to loosen the nut on the first pull rod 9.

Claims (9)

1. The tension rod locking device of the sleeper prestressed tendon tensioning machine is arranged on the main support (1) and can move along the tensioning or releasing direction; the device is characterized by comprising a box body (2) with a tensioning jack (7) fixed at the rear part, a horizontal sliding frame (5) is fixed on the right side of the box body (2), a vertical sliding frame (6) is arranged inside the horizontal sliding frame (5) and is slidingly assembled with a horizontal sliding groove formed in the horizontal sliding frame, the inner end of a second tensioning rod (11) of the tensioning jack (7) extends into the vertical sliding frame (6) through the side wall of the box body (2) and the rear end of the horizontal sliding frame (5), a connector (10) longitudinally moves under the driving of a power source assembled on the vertical sliding frame (6), clamping grooves which are coaxial with the second tensioning rod (11) are formed in the two ends of the connector (10) respectively, and the clamping grooves are matched with tensioning ends of the second tensioning rod (11) and a first tensioning rod (9) on a sleeper die (8).

2. The tension rod locking device of the sleeper prestressed tendon tensioning machine according to claim 1, wherein the clamping groove is n-shaped or gate-shaped.

3. The tension rod locking device of the sleeper prestressed tendon tensioning machine according to claim 1, wherein a power source assembled on the vertical carriage (6) is a vertical cylinder (4) assembled on the top of the vertical carriage (6), and a connector (10) is fixed at the action execution end of the lower part of the vertical cylinder.

4. A tension rod locking device of a sleeper prestressed tendon tensioning machine according to claim 3, characterized in that a connector (10) is fixed at the lower end of a piston rod of the vertical cylinder (4).

5. A tension rod locking device of a sleeper prestressed tendon tensioning machine according to claim 1, characterized in that the adjacent ends of the second tension rod (11) and the first tension rod (9) are bulged and adapted to the clamping groove.

6. The tension rod locking device of the sleeper prestressed tendon tensioning machine according to claim 1, characterized in that a nut sleeve on a rotary motor (3) arranged at the front part of the box body (2) is matched with a nut on the first tension rod (9).

7. A tension rod locking device of a sleeper tendon tensioning machine as claimed in claim 3 or 4, characterised in that the top of the vertical cylinder (4) extends to the outside through an aperture in the surface of the horizontal carriage (5).

8. The tension rod locking device of the sleeper prestressed tendon tensioning machine according to claim 7, wherein said opening is a slotted hole.

9. The tension rod locking device of the sleeper prestressed tendon tensioning machine according to claim 1, wherein the horizontal oil cylinder (12) drives the box body (2) to be matched with the guide rail of the main support (1) in a sliding manner along the tensioning direction.

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