Novel clamping groove spring for underground engineering

Abstract

The utility model relates to the field of underground engineering, and discloses a novel clamping groove spring for underground engineering, which comprises a supporting assembly and a spring, the supporting assembly comprises a supporting screw rod, a fixed disc and a base, the supporting screw rod sequentially penetrates through the fixed disc, the spring and the base, the fixed disc comprises a fixed female part and a rotating nut, and the rotating nut is connected with the fixed female part. When external force directly acts on a certain local part of the screw, stress concentration of the local part is easily caused, fatigue damage is further caused, pressure of peripheral external force on the screw is dispersed into force in multiple directions of connecting rods, connecting arms and the like in the connecting rod mechanism, the stress concentration phenomenon can be remarkably reduced, the stress of the whole structure is more uniform, and the service life of the screw is prolonged. Therefore, the overall stability and the service life are improved.

Description

Technical Field

[0001] The utility model relates to the field of underground engineering, in particular to a novel slot spring used in underground engineering. Background Art

[0002] With the in-depth development of underground engineering, the segment screw fixing system is an important component used to connect and fix the segments in tunnel engineering to ensure the stability and sealing of the tunnel structure. The traditional screw fixing system mainly uses a combination of screws and nuts to fix and connect the segments, but after long-term operation in the humid and corrosive environment underground, it is easy to rust and damage, which will cause deformation of the segment ring and uneven distribution of internal forces, increasing structural risks. Utility Model Content

[0003] The purpose of the utility model is to provide a new type of slot spring for underground engineering, so as to solve the problem proposed in the above background technology that the existing spring is prone to rust and damage after long-term operation in a humid and corrosive environment underground, which will cause deformation of the segment ring and uneven distribution of internal force, thereby increasing structural risks.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A new type of slot spring for underground engineering, including a support assembly and a spring, the support assembly including a support screw, a fixed disk and a base, the support screw is sequentially penetrated by the fixed disk, the spring and the base, the fixed disk includes a fixed mother part and a rotating nut, the fixed mother part is hollow and sleeved with the rotating nut, the rotating nut rotates relative to the fixed mother part, the rotating nut is sleeved on the support screw, and the base is fixed to the bottom end of the support screw; the outer periphery of the fixed disk and the base is provided with the same number of connecting ears with opposite positions, and each relative connecting ear is connected by a connecting rod mechanism; the top of the support screw is provided with a nut, and the nut is rotated to lock the position of the support screw.

[0006] Furthermore, the connecting rod mechanism includes an arm and a middle connecting rod, each connecting ear is connected to a connecting arm, the connecting arms on each pair of connecting ears arranged oppositely are connected through the middle connecting rod, and the connecting arms and the middle connecting rod are connected through a pin shaft.

[0007] Furthermore, the fixing mother part is in the shape of a hollow disk, and has a boss with the same hollow interior on its top, and the rotating nut is installed in the hollow part of the boss and rotates relatively.

[0008] Furthermore, the spring is a helical round spring.

[0009] Furthermore, the connecting rod mechanism on the outer periphery of the fixing plate and the base is connected in a single-connection, double-connection or triple-connection manner.

[0010] Furthermore, the spring structure is used for connecting shield segments.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model adopts an external connecting rod mechanism. When external force directly acts on a certain part of the screw, it is easy to cause stress concentration in the area, which in turn causes fatigue damage. The pressure of the surrounding external forces on the screw is dispersed into forces in multiple directions such as the middle connecting rods and connecting arms in the connecting rod mechanism, which can significantly reduce the stress concentration phenomenon and make the whole structure more evenly stressed, thereby improving its overall stability and service life.

[0013] 2. During installation, the connecting rod mechanism is squeezed, and the connecting rod mechanism will move toward the center and extend along the axial direction of the screw. At the same time, the elongation of the connecting rod drives the fixed plate to move in the axial direction of the screw, causing the spring to be stretched, thereby reducing the radius of the overall structure of the rigid part, making it easier for it to enter the predetermined structure.

[0014] 3. Arranging a rotating nut in the fixed disk can effectively reduce the movement speed of the spring during the stretching and contraction process, and effectively slow down the wear on the spring.

[0015] 4. In order to maintain the state of the spring after stretching, the utility model adopts a nut set on the top of the support screw, and the position of the fixed disk is locked by rotating the nut to ensure that the spring and the connecting rod mechanism maintain their state, thereby achieving the fixation and stability of the entire structure.

[0016] The spring of the utility model is an integrated auxiliary fixing structure, which ensures the correct position and stability of the spring in the screw rod. Since the rigid part of the structure adopts high-strength plastic, it can adapt to complex geological conditions such as soft soil and rock, ensuring the stable support of the structure in a changeable underground environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the fixed disk of the utility model;

[0019] Figure 3 This is a schematic diagram of the connecting rod structure in the utility model;

[0020] Figure 4 Schematic diagrams of four embodiments of the utility model;

[0021] In the figure: 110-spring, 210-support screw, 220-fixed plate, 221-fixed mother part, 222-rotating nut, 223-boss, 230-base, 240-connecting ear, 250-connecting rod mechanism, 251-middle connecting rod, 252-connecting arm, 253-pin shaft, 260-nut. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1 As shown, a new type of slot spring for underground engineering includes a support assembly and a spring 110, the support assembly includes a support screw 210, a fixed disk 220 and a base 230, the support screw 210 is sequentially penetrated by the fixed disk 220, the spring 110 and the base 230, the fixed disk 220 includes a fixed mother part 221 and a rotating nut 222, the fixed mother part 221 is hollow and sleeved with the rotating nut 222, the rotating nut 222 rotates relative to the fixed mother part 221, the rotating nut 222 is sleeved on the support screw 210, and the base 230 is fixed to the bottom end of the support screw 210; the outer periphery of the fixed disk 220 and the base 230 is provided with the same number of connecting ears 240 with opposite positions, and each opposite connecting ear 240 is connected by a connecting rod mechanism 250; the top of the support screw 210 is provided with a nut 260, and the position of the support screw 210 is locked by rotating the nut 260.

[0024] like Figure 1 and 3 As shown, the connecting rod mechanism 250 includes a connecting arm 252 and a middle connecting rod 251. Each connecting ear 240 is connected to a connecting arm 252. The connecting arms 252 on each pair of connecting ears 240 arranged opposite to each other are connected through the middle connecting rod 251. The connecting arms 252 and the middle connecting rod 251 are connected through a pin shaft 253.

[0025] like Figure 2 As shown, the fixing mother part 221 is in the shape of a hollow disk, and has a boss 223 with the same hollow interior on its top. The rotating nut 222 is installed in the hollow part of the boss 223 and rotates relatively.

[0026] like Figure 1 As shown, the spring 110 is a helical round spring 110 .

[0027] like Figure 4 As shown, the connecting rod mechanism 250 on the outer periphery of the fixing plate 220 and the base 230 is connected in a variety of ways, such as single connection, double connection, triple connection, etc., to meet the needs of various connecting parts (screws or bolts).

[0028] In actual use, the spring 110 structure is used for connecting shield segments.

[0029] In other embodiments, except for the spring 110 which is made of metal material, other components can be made of high-strength plastic. This not only reduces the weight of the overall structure, but can also be produced through 3D printing technology. Compared with traditional metal processing methods, it saves manufacturing time and labor costs, and also reduces the requirements for production sites.

[0030] The use principle of the utility model is as follows: the operator squeezes the connecting rod mechanism 250, at which time the connecting rod mechanism 250 will move toward the center and extend along the axial direction of the screw, and the extension of the connecting rod mechanism 250 drives the fixed disk 220 to move in the axial direction of the screw, and the spring 110 is slowly stretched under the influence of the rotating nut 222, so that the radius of the overall structure of the connecting rod mechanism 250 is reduced and then inserted into the predetermined structure. At this time, the connecting rod mechanism 250 on all sides will no longer be subjected to the squeezing force, and the stretched spring 110 begins to shrink due to its own elastic characteristics, driving the radius of the connecting rod mechanism 250 to increase and adapt to the predetermined internal space of the structure. At this time, the nut 260 on the top of the screw is rotated to lock the position of the fixed disk 220 to ensure that the spring 110 no longer stretches or shrinks, thereby achieving the fixation and stability of the entire structure.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of slot spring for underground engineering, characterized by: It includes a support assembly and a spring, and the support assembly includes a support screw, a fixed disk and a base. The support screw is penetrated by the fixed disk, the spring and the base in sequence, and the fixed disk includes a fixed mother part and a rotating nut. The fixed mother part is hollow and sleeved with the rotating nut. The rotating nut rotates relative to the fixed mother part. The rotating nut is sleeved on the support screw, and the base is fixed to the bottom end of the support screw; the outer periphery of the fixed disk and the base is provided with connecting ears of the same number and relative positions, and each relative connecting ear is connected by a connecting rod mechanism; a nut is provided on the top of the support screw, and the nut is rotated to lock the position of the support screw.

2. The novel slot spring for underground engineering according to claim 1 is characterized in that: The connecting rod mechanism includes a connecting arm and a middle connecting rod. Each connecting ear is connected to a connecting arm. The connecting arms on each pair of connecting ears arranged opposite to each other are connected through the middle connecting rod. The connecting arm and the middle connecting rod are connected through a pin shaft.

3. The novel slot spring for underground engineering according to claim 1 is characterized in that: The fixed female part is in the shape of a hollow disk, and a boss with the same hollow interior is provided on the top thereof. The rotating nut is installed in the hollow part of the boss and rotates relatively.

4. The novel slot spring for underground engineering according to claim 1 is characterized in that: The spring is a helical round spring.

5. The novel slot spring for underground engineering according to claim 1 is characterized in that: The connecting rod mechanism on the outer periphery of the fixing plate and the base is connected in a single-connection, double-connection or triple-connection manner.

6. A new type of slot spring for underground engineering according to any one of claims 1 to 5, characterized in that: The spring structure is used for connecting shield segments.

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