Anchor rod pre-tightening force visualized finger-pressing gasket

Abstract

The utility model discloses an anchor rod pre-tightening force visualization finger-pressing gasket which comprises a pressed ring arranged on the front face of the finger-pressing gasket and a sizing material groove formed in the back face of the pressed ring, and a flow guide groove is formed in the outer wall of the sizing material groove. Compared with the prior art, the gasket has the positive effects that in the gasket structure, the compression ring adopts a stress structure of the arched circular ring, so that the gasket can be uniformly stressed, the arched height is smaller, and the required force value range from the stress of the gasket to the complete flattening of the arched circular ring is smaller; therefore, the gasket can accurately indicate whether the pre-tightening force meets the preset requirement or not. In practical application, the indicating range of the pre-tightening force is adjusted by controlling the overall size of the gasket, so that the application requirement is met. The anchor rod pre-tightening device can be matched with an anchor rod trolley to achieve mechanical installation of an anchor rod and exert pre-tightening force, the development trend of current tunnel anchor rod mechanical construction is met, the installation efficiency of the anchor rod can be effectively improved, and engineering quality and personnel safety are guaranteed.

Description

Technical Field

[0001] The utility model relates to a visual finger-pressure washer for bolt pre-tightening force, which can visually indicate whether the performance such as the pre-tightening force meets the standard, and can be used in the process of applying the pre-tightening force during the installation of bolts in the field of traffic tunnels. Background Technique

[0002] In the modern engineering field, especially in the construction of traffic tunnels, it is usually necessary to install bolts in the tunnel and apply pre-tightening force to anchor and support the tunnel. At present, there are the following two methods for applying pre-tightening force to bolts and judging whether the pre-tightening force meets the standard. One is manual application. The operator uses a torque wrench to apply pre-tightening force to the bolt by applying torque. The torque value of the torque wrench needs to be adjusted before application, and the efficiency of manual application is low. The other is equipment application. After the bolt is installed, torque is continuously applied to the bolt by the equipment. The operator stops applying according to work experience, or sets a certain torque value and time on the equipment, and the equipment automatically stops when the output torque reaches the set time. However, due to the unsatisfactory on-site working conditions, there is a large gap between the theoretical pre-tightening force converted by torque and the actual pre-tightening force applied on-site, which seriously affects the installation quality of the bolts. Therefore, the above two methods cannot guarantee the quality and efficiency of bolt installation, do not conform to the current development trend of mechanized construction of tunnel bolts, and a product that can accurately and visually indicate whether the pre-tightening force meets the standard during the bolt installation process is needed, so as to reduce the adjustment times of the equipment when applying the pre-tightening force, improve the installation efficiency of the bolts, and ensure the project quality and personnel safety. Content of the Utility Model

[0003] In order to overcome the above-mentioned shortcomings of the prior art, the utility model provides a visual finger-pressure washer for bolt pre-tightening force. The washer of the utility model can visually indicate whether the bolt pre-tightening force meets the standard. When the pre-tightening force reaches the preset value of the finger-pressure washer, the fluorescent colloid will overflow to the outside of the washer, visually prompting the observer that the pre-tightening force has reached the specified requirement.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a visual finger-pressure washer for bolt pre-tightening force, including a pressure-receiving ring arranged on the front surface of the finger-pressure washer and a rubber groove arranged on the back surface of the pressure-receiving ring, and a diversion groove is arranged on the outer wall of the rubber groove.

[0005] Compared with the prior art, the positive effects of the utility model are:

[0006] 1. In the gasket structure of the utility model, the pressure ring adopts the force structure of the arched ring, so that the gasket can be evenly stressed, the arch height is small, and the force range required for the gasket from stress to the arched ring being completely flattened is small, so the gasket can accurately indicate whether the preload force reaches the preset requirement. In practical applications, the indication range of the preload force is adjusted by controlling the overall size of the gasket to meet the application requirements.

[0007] 2. In the gasket structure of the utility model, the rubber groove adopts a circular groove structure, and the rubber groove is filled with colored colloid material. When the gasket is subjected to force, the material in the rubber groove flows out through the guide groove, and the outflowing colloid material is concentrated on the outside of the gasket. Fluorescent agent is added to the colloid material, which can intuitively convey the preload force to the operator even in a tunnel with poor visibility.

[0008] 3. The utility model can cooperate with the anchor trolley to realize the mechanized installation of anchors and apply pre-tightening force, which is in line with the current development trend of mechanized construction of tunnel anchors, can effectively improve the installation efficiency of anchors, and ensure the quality of the project and the safety of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0010] Figure 1 It is a structural schematic diagram of the finger pressure washer of the utility model;

[0011] Figure 2 It is a structural schematic diagram of the pressure ring in the finger pressure washer of the utility model;

[0012] Figure 3 It is a structural schematic diagram of the rubber groove and the guide groove in the finger pressure washer of the utility model;

[0013] Figure 4 It is a schematic diagram of the glue groove in the finger pressure washer of the utility model being filled with colloid material;

[0014] Figure 5 It is a schematic diagram of the overflow of fluorescent colloid when the pressure on the finger pressure washer of the utility model reaches a preset value;

[0015] Figure 6 This is a schematic diagram of the installation of the utility model finger pressure washer and the matching anchor rod;

[0016] Figure 7 It is a schematic diagram of the finger pressure washer of the utility model beginning to be compressed;

[0017] Figure 8 It is a schematic diagram of the finger pressure washer of the utility model being completely flattened and indicating the preload force;

[0018] Reference numerals in the figures include:

[0019] A pressure ring 1, a rubber groove 2, a guide groove 3, a colloid material 4, a hollow rod body 5, a backing plate 6, a spherical washer 7, a finger pressure washer 8, and a nut 9. DETAILED DESCRIPTION

[0020] A kind of anchor bolt preload visualization finger pressure washer, such as Figure 1 As shown, it includes a pressure ring 1, a rubber groove 2, a guide groove 3, etc., wherein: the protruding part on the front side of the finger pressure washer is the pressure ring 1, and the concave part on the back side of the pressure ring 1 constitutes the rubber groove 2.

[0021] The pressure ring 1 is an arched circular ring with an arch height of 1 mm to 5 mm. Figure 2 As shown in the figure, the design of the arched circular ring can make the gasket bear the force evenly during use, and can accurately indicate whether the preload force meets the standard; the ratio of the width of the pressure ring to the overall width of the gasket is 0.2-0.6. If the ratio is less than 0.2, the amount of colloid material filled is very small, and the indication effect is not obvious; if it is greater than 0.6, the gasket is easy to deform during use, affecting the use effect; the overall thickness of the visual acupressure gasket product is 3-10mm. The indicated preload force can be adjusted by controlling the arch height and width of the pressure ring and the overall thickness of the product.

[0022] The glue groove 2 is a circular groove, and its structure is as follows Figure 3 As shown, the groove is used to fill the colored colloid material, and the fluorescent agent is added to the colloid material. The gasket after filling the colloid material is as shown in Figure 4 As shown, the colloid material will flow when squeezed, and the guide groove 3 arranged on the outer wall of the rubber groove 2 is used for drainage, so that the colloid material 4 in the rubber groove 2 is concentrated outside the gasket, so as to achieve the effect of intuitively indicating the preload force, as shown in FIG. Figure 5 shown.

[0023] The method for using the anchor rod pre-tightening force visualized finger pressure washer of the utility model during the anchor rod installation process comprises the following steps:

[0024] Step 1: Install the washer: After the anchor rod is installed into the anchor hole, install the backing plate 6, spherical washer 7, finger pressure washer 8, and nut 9 on the exposed hollow rod body 5 in sequence. Figure 6 As shown;

[0025] Step 2: Indicate preload: Use the device to rotate the nut 9 to apply preload to the anchor rod. The nut squeezes the finger pressure washer 8, and the pressure ring 1 of the finger pressure washer is deformed under pressure. When the colloid material 4 in the glue tank is clearly observed to flow to the outside of the washer through the guide groove 3, the preload reaches the standard and the anchor rod installation is completed. The schematic diagram of the washer starting to be compressed is shown in the figure below. Figure 7 As shown in the figure, the schematic diagram indicating the preload force after the gasket is flattened is as follows Figure 8 shown.

[0026] Working principle of the utility model:

[0027] 1. The compression ring of the utility model adopts a stress structure of an arched circular ring, where the arched height is relatively small, enabling the washer to be evenly stressed and indicating a relatively small range of pre-tightening force. This not only ensures the accuracy of indication but also eliminates the need to repeatedly adjust the torque parameters of the equipment during the operation of the washer, thus improving the installation efficiency of the bolt.

[0028] 2. The utility model is designed with a rubber material groove capable of loading a large amount of colloidal material, ensuring that it can clearly indicate whether the pre-tightening force meets the standard in practical applications. The structural form of the rubber material groove is not limited to the circular groove structure, and can also be a square or other groove structures that can meet the requirements of practical applications.

[0029] 3. The utility model is designed with a diversion groove for guiding the pressured flow of the colloidal material. The number of diversion grooves is not less than 3. When the washer is stressed, the colloidal material in the rubber material groove flows out through the diversion groove and concentrates outside the washer. A fluorescent agent is added to the colloidal material, which can visually indicate whether the pre-tightening force reaches the preset requirement.

[0030] 4. The washer designed by the utility model is not limited to the installation of bolts in the field of traffic tunnels, and can also be applied to the installation of related products with specific requirements for pressure, pre-tightening force, etc.

[0031] 5. The utility model can realize the mechanical installation of bolts by using a finger-pressure washer with a fluorescent colloid added to the rubber material groove in cooperation with the bolt.

Claims

1. A visual finger pressure washer for bolt pre-tightening force, characterized in that: It includes a pressure-receiving ring provided on the front surface of the finger-pressure washer and a rubber compound groove provided on the back surface of the pressure-receiving ring, and a flow guide groove is provided on the outer wall of the rubber compound groove.

2. The visual finger pressure washer for the pre-tightening force of the anchor rod according to claim 1, characterized in that: The pressure-receiving ring is an arched circular ring.

3. The visual finger pressure washer for bolt pre-tightening force according to claim 2, wherein: The arched height is 1 mm to 5 mm.

4. A visual finger pressure washer for the pre-tightening force of an anchor bolt according to claim 1, characterized in that: The ratio of the width of the pressure-receiving ring to the overall width of the finger-pressure washer is 0.2 to 0.

6.

5. The visual finger pressure washer for bolt pre-tightening force according to claim 1, characterized in that: The overall thickness of the finger-pressure washer is 3 to 10 mm.

6. A visual finger pressure washer for bolt pre-tightening force according to claim 1, characterized in that: The rubber compound groove is a circular groove.

7. A visual finger pressure washer for the pre-tightening force of an anchor bolt according to claim 1, characterized in that: The rubber compound groove is a square groove.

8. The visual finger pressure washer for bolt pre-tightening force according to claim 1, characterized in that: The number of the flow guide grooves is greater than or equal to 3.

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