Flat connecting ring positioning pin, positioning pin fixing block mounting method and mounting die

Abstract

The application provides a flat chain link positioning pin, a positioning pin fixing block mounting method and a mounting die, wherein the positioning pin comprises a fixing block, the fixing block comprises a main body and an arc-shaped groove opened on one side of the main body, the arc-shaped groove is wrapped around a pin column surface where the non-closed elastic ring is located, and a wrapping area is located in an area where a non-contact area in a vertical direction projection of the limiting plate is located. The application also provides a positioning pin fixing block mounting method and a mounting die. By arranging the fixing block on the positioning pin, the arc-shaped groove matched with the arc surface of the pin column of the positioning pin is opened on the fixing block. By adopting the structure, the fixing block can cover the exposed area of the non-closed elastic ring, and foreign matters are prevented from entering the non-closed elastic ring.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flat link chain positioning pin, in particular to a mine flat link chain positioning pin, a mine flat link chain positioning pin fixing block installation method and a mine flat link chain positioning pin fixing block installation mold. BACKGROUND

[0002] The mine vertical link chain is an essential part of the mine conveying equipment, which connects the mine chain end to end. The mine flat link chain is composed of left and right two half rings, which are positioned by positioning pins. However, due to the poor underground working environment, the mine flat link chain is subjected to complex stress, in addition to cyclic fatigue tension, it also bears impact load. During the operation of the conveying equipment, if the positioning pin loosens or falls off, the left and right half rings of the link chain may be disconnected or broken, which may cause the mine mining conveying equipment to stop production.

[0003] The existing flat link chain positioning pin is externally installed with a non-closed elastic ring, and two steel balls are installed inside. By hitting the elastic pin into the center hole of the positioning pin, the elastic pin pushes out the steel ball and makes the non-closed elastic ring embedded in the link chain positioning groove, thereby fixing the left and right half rings of the link chain.

[0004] However, the non-closed elastic ring installed on the existing positioning pin is prone to deviation during installation and use, or foreign matter is stuck in the interface part of the non-closed elastic ring, which causes the non-closed elastic ring to be unable to enter or fall out of the link chain positioning groove, and further causes the flat link chain positioning pin to loosen or fall off, resulting in link chain failure, frequent replacement, and high frequency of conveying equipment downtime. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a mine flat link chain positioning pin that prevents foreign matter from entering the non-closed elastic ring of the positioning pin.

[0006] Another technical problem to be solved by the present application is to provide a method for installing the above fixing block on the positioning pin.

[0007] Still another technical problem to be solved by the present application is to provide a special mold for processing the above fixing block.

[0008] In a first aspect, for the technical subject of a positioning pin for a mine flat link chain ring, a positioning pin for a mine flat link chain ring is provided, which comprises a pin column, a through hole, a limiting plate and a fixing block. The middle part of the pin column is provided with an annular groove, a spherical ball is placed in the inner ring of the annular groove, and a non-closed elastic ring is arranged in the outer ring of the annular groove, and the non-closed elastic ring surrounds the spherical ball. The through hole penetrates the axis of the positioning pin, and the through hole is used for installing a lock pin, so that the end of the lock pin extrudes the spherical ball, causing the spherical ball to displace outward of the annular groove and expand the radius of the non-closed elastic ring. The limiting plate is arranged at one end of the pin column, and the limiting plate comprises a non-contact area which does not contact the flat link chain ring and a contact area which contacts the flat link chain ring. The fixing block comprises a main body and an arc-shaped groove opened on one side of the main body, the arc-shaped groove wraps around the pin column surface where the non-closed elastic ring is located, and the wrapping area is located in the area where the non-contact area is located in the vertical direction projection of the limiting plate.

[0009] By this technical solution, when the positioning pin is installed in the mine flat link chain ring, the part of the non-closed elastic ring exposed to the air is the area where the non-contact area is located in the vertical direction projection of the limiting plate, and the remaining area of the non-closed elastic ring will not be exposed due to the close contact between the positioning pin and the link chain ring. Therefore, a device is needed to wrap the exposed area of the non-closed elastic ring. The positioning pin provided in the present application is provided with a fixing block, and the fixing block is provided with an arc-shaped groove which matches the arc surface of the pin column. By using this structure, the fixing block can wrap the exposed area of the non-closed elastic ring, preventing foreign matter from entering the non-closed elastic ring.

[0010] As an improvement of the above-mentioned positioning pin, the fixing block is made of rubber.

[0011] In a second aspect, based on the same inventive concept as the above-mentioned positioning pin, the present application provides a fixing block installation method for a positioning pin for a mine flat link chain ring, which comprises:

[0012] Wrapping the arc-shaped groove of the fixing block around the pin column surface where the non-closed elastic ring is located, and the wrapping area is located in the area where the non-contact area is located in the vertical direction projection of the limiting plate;

[0013] Heating the fixing block and / or the pin column to make the fixing block adhere to the pin column.

[0014] In this technical solution, the fixing block is adhered to the pin column by heating.

[0015] In order to facilitate heating of the above-mentioned fixing block and / or the pin column, as an improvement of the above-mentioned installation method, the fixing block and / or the pin column are placed in a limiting device for containing the fixing block and the pin column for heating.

[0016] In a third aspect, the positioning pin and the positioning pin fixing block installation method have the same inventive concept. For the technical subject of the installation mold for the positioning pin fixing block of the mining flat link chain ring, the application provides the installation mold for the positioning pin fixing block of the mining flat link chain ring. The installation mold comprises an upper mold and a lower mold which are fitted and installed. The upper mold is provided with a plurality of upper mold cavities. The lower mold is provided with a plurality of lower mold cavities. The upper mold cavities and the lower mold cavities are combined to form a plurality of complete positioning pin placement cavities after being fitted and installed.

[0017] The installation mold can enable the machining of the fixing block and the installation of the fixing block to be performed simultaneously.

[0018] Specifically, the installation mold comprises an upper mold and a lower mold which are fitted and installed. The upper mold is provided with a plurality of upper mold cavities. The lower mold is provided with a plurality of lower mold cavities. The upper mold cavities and the lower mold cavities are combined to form a plurality of complete positioning pin placement cavities after being fitted and installed.

[0019] As an improvement of the installation mold, the placement cavity comprises a pin column cavity corresponding to the pin column, a limiting plate cavity corresponding to the limiting plate, a non-closed elastic ring cavity corresponding to the non-closed elastic ring, and a fixing block cavity corresponding to the fixing block. The preliminary positioning of the subsequent machining of the fixing block can be completed by clamping the corresponding part of the positioning pin into the corresponding part of the placement cavity. The rubber block required for machining the fixing block is placed in the fixing block cavity formed by the upper mold cavity and the lower mold cavity, thereby preliminarily preparing for the subsequent forming and installation of the fixing block.

[0020] As an improvement of the installation mold, the installation mold further comprises a positioning rod which passes through the through hole of the upper mold and the lower mold to complete the positioning of the mold.

[0021] As an improvement of the installation mold, the installation mold is provided with two rows of placement cavities which are opposite to each other. The pin column cavities of the two rows of placement cavities in the same column are coaxial and communicate with each other.

[0022] As an improvement of the installation mold, the installation mold further comprises or is provided with a heating device. The heating device can be used to heat the installation mold.

[0023] The application has the following beneficial effects:

[0024] 1. The non-closed elastic ring fixing block of the positioning pin of the mining flat link chain ring is provided with a non-closed elastic ring made of rubber material at the non-closed elastic ring part of the positioning pin. The non-closed elastic ring fixing block is used to fix the non-closed elastic ring so as to prevent the non-closed elastic ring from deviating and to prevent foreign matters from being clamped into the interface part of the non-closed elastic ring, thereby ensuring the elastic function of the non-closed elastic ring entering the positioning groove.

[0025] 2. The fixed block of the application fixes the non-closed elastic ring of the mine flat link chain positioning pin without rigid connection, and the non-closed elastic ring used originally can be replaced by a simpler circular non-closed elastic ring. The circular non-closed elastic ring is filled in the annular groove according to its thickness and the width of the annular groove to achieve the function of pressing the spherical bead. This can avoid the disadvantages of traditional rigid connection fixing methods, such as bolt fixing, welding fixing, and clamp fixing, which affect the elastic function of the non-closed elastic ring entering the positioning groove, thereby avoiding the limitation of the elastic function of the non-closed elastic ring, making the steel bead unstable, and reducing the risk of elastic pin falling out.

[0026] 3. The installation method of the fixed block of the application. The fixed block is adhered to the positioning pin during processing. The shape of the main body prevents the positioning pin from rotating after installation, enhancing the stability of the positioning pin.

[0027] 4. The application provides a special mold for processing the fixed block of the non-closed elastic ring of the mine flat link chain positioning pin. The number of pieces processed at a time can be increased to multiple pieces, the production efficiency is improved, the low efficiency and complex processing problems of traditional rigid connection non-closed elastic ring are avoided, and the fixed block is adhered to the positioning pin during processing. The limiting plate cavity on the mold limits the position of the positioning pin placed on the mold, and the position of the fixed block adhered to the positioning pin is also fixed, so there is no need for secondary adjustment of the position of the fixed block installed on the positioning pin later. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0029] Figure 1 It is a schematic diagram of the steel bead installation of the mine flat link chain positioning pin in the embodiments of the application.

[0030] Figure 2 It is a schematic diagram of the structure of the fixed block of the mine flat link chain positioning pin in the embodiments of the application.

[0031] Figure 3 It is a schematic diagram of the structure of the fixed block of the mine flat link chain positioning pin in the embodiments of the application.

[0032] Figure 4 It is a structure diagram of the installation mold in the embodiments of the application.

[0033] Figure 5 For Figure 4 Enlarged view at a;

[0034] BRIEF DESCRIPTION OF DRAWINGS

[0035] 1, positioning pin; 11, pin column; 12, annular groove; 13, spherical ball; 14, non-closed elastic ring; 15, locking pin; 16, limiting plate; 161, non-contact area; 162, contact area; 17, fixed block; 171, main body; 172, arc-shaped groove;

[0036] 2, installation mold; 21, upper mold; 211, upper mold cavity; 22, lower mold; 221, lower mold cavity; 23, positioning rod;

[0037] 3, placement cavity; 31, pin column cavity; 32, limiting plate cavity; 33, non-closed elastic ring cavity; 34, fixed block cavity. DETAILED DESCRIPTION

[0038] The technical solutions of the present application will be described in detail below with reference to the accompanying drawings. Figures 1-5 The embodiments of the technical solutions of the present application are described in detail below. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application. In addition, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0039] Embodiment one

[0040] In the prior art, the non-closed elastic ring 14 will inevitably expose a part of the position to the air, and will inevitably come into contact with a large amount of sundries in the use environment of the mine, etc. At this time, the non-closed elastic ring 14 exposed to the air is extremely easy to enter the sundries, affecting the elasticity of the non-closed elastic ring 14, and further affecting the function of pressing the spherical ball 13, so that the locking pin 15 in the positioning pin 1 is not stable, and is easy to come off during use.

[0041] In order to solve this problem, as Figures 1-3The application provides a positioning pin for a mining flat link chain, which comprises a pin column 11, a through hole, a limiting plate 16 and a fixing block 17. The middle part of the pin column 11 is provided with an annular groove 12, the inner ring of the annular groove 12 is arranged with a spherical ball 13, and the outer ring of the annular groove 12 is provided with a non-closed elastic ring 14 which surrounds the spherical ball 13. The through hole penetrates the axis of the positioning pin 1 and is used for mounting a locking pin 15, so that the end of the locking pin 15 extrudes the spherical ball 13, the spherical ball 13 is displaced outward of the annular groove 12, and the radius of the non-closed elastic ring 14 is expanded. The limiting plate 16 is arranged at one end of the pin column 11, and the limiting plate 16 comprises a non-contact area 161 which does not contact the flat link chain and a contact area 162 which contacts the flat link chain. The fixing block 17 comprises a main body 171 and an arc-shaped groove 172 which is opened on one side of the main body 171, the arc-shaped groove 172 is wrapped around the cylindrical surface of the pin column 11 where the non-closed elastic ring 14 is located, and the wrapping area is located in the area where the non-contact area 161 is located in the vertical direction projection of the limiting plate 16.

[0042] In an embodiment, the non-closed elastic ring 14 can be a spring, a ring-shaped spring sheet or other parts with elastic radius changeable, and the shape of the main body 171 can be a square block or a non-square block. Figures 1-2 In the embodiment, the shape of the main body 171 is selected as a square block, the non-contact area 161 of the limiting plate 16 is an area which does not contact the flat link chain, and the contact area 162 is an area which contacts the flat link chain. Figure 3 The structure of the fixing block is shown in the structural diagram, in the embodiment, one side of the main body 171 is provided with an arc-shaped groove 172 which is wrapped around the cylindrical surface of the pin column 11 where the non-closed elastic ring 14 is located, and the wrapping area is located in the area where the non-contact area 161 is located in the vertical direction projection of the limiting plate 16. Specifically, when the positioning pin 1 is installed in the mining flat link chain, the part of the non-closed elastic ring 14 exposed in the air is the area where the non-contact area 161 is located in the vertical direction projection of the limiting plate 16, and the remaining area of the non-closed elastic ring 14 is not exposed due to the close contact between the positioning pin and the link chain, so a device for wrapping the exposed area of the non-closed elastic ring is needed. The application provides a fixing block 17 which is provided with an arc-shaped groove 172 which matches the arc surface of the pin column 11 of the positioning pin 1, and the fixing block 17 can wrap the exposed area of the non-closed elastic ring 14 by adopting the structure, so that foreign matters are prevented from entering the non-closed elastic ring 14.

[0043] In an alternative embodiment, the fixing block 17 is made of rubber. The rubber material has a large static friction coefficient, which can better prevent the fixing block from moving in the positioning pin. The rubber material can quickly recover after being stressed, providing the necessary elasticity and cushioning. Because rubber has good deformability and elasticity, it can form an effective seal. Because rubber becomes sticky when heated, it is easier to install the fixing block in the positioning pin by heating.

[0044] The skilled person can also choose other materials for the fixing block, such as elastic plastic.

[0045] Embodiment Two

[0046] Based on the same inventive concept as Embodiment One, in order to install the fixing block in Embodiment One in the positioning pin, this embodiment provides a method for installing a fixing block for a mine flat link chain positioning pin, the method comprising:

[0047] Wrapping the arc-shaped groove 172 of the fixing block 17 around the pin column 11 surface where the non-closed elastic ring 14 is located, and the wrapping area is located in the area where the non-contact area 161 of the limiting plate 16 is located in the vertical direction projection;

[0048] Heating the fixing block 17 and / or the pin column 11 to make the fixing block 17 adhere to the pin column 11.

[0049] In the installation method provided in this embodiment, the term "and / or" indicates that there can be three relationships: heating the fixing block 17, heating the pin column 11, and heating the fixing block 17 and the pin column 11 at the same time.

[0050] In order to clearly describe the installation process of the fixing block for the mine flat link chain positioning pin, the following is a detailed step-by-step description of the installation method provided:

[0051] Step One: Place the fixing block. Align the arc-shaped groove 172 of the fixing block 17 with the surface of the pin column 11, ensuring that the groove can completely wrap the area where the non-closed elastic ring 14 is located. Adjust the position of the fixing block 17 so that the wrapped area is located in the area where the non-contact area 161 of the limiting plate 16 is located in the vertical direction projection. This is to ensure that the fixing block 17 does not affect the normal work of the limiting plate 16 after installation.

[0052] Step Two: Heat the fixing block and / or the pin column. Use a heating tool to heat the fixing block 17 and / or the pin column 11. The purpose of heating is to soften the material of the fixing block 17, so that it can better adhere to the pin column 11. Control the temperature and time of heating to avoid damage to the fixing block 17 or the pin column 11 due to excessive temperature. At the same time, the heating time should not be too long, so as not to affect the work efficiency.

[0053] Step three: Fixing the block. When the fixing block 17 is heated to the appropriate temperature, it is quickly pressed onto the pin column 11 to ensure that the fixing block 17 is tightly attached to the pin column 11.

[0054] Wait for the fixing block 17 to cool and solidify, forming a firm adhesive connection. During this process, external forces should be avoided to prevent affecting the adhesion of the fixing block 17.

[0055] After the fixing block 17 is completely cooled and solidified, check the adhesion of the fixing block 17 to the pin column 11 to ensure that there is no looseness, falling off, etc. At the same time, check whether the installation position of the fixing block 17 is correct and whether it affects the normal work of the limiting plate 16. Through the above steps, the fixing block of the mine flat link chain ring positioning pin can be successfully installed on the pin column, ensuring that the non-closed elastic ring is firmly and reliably fixed.

[0056] In the above method, an alternative embodiment is to place the fixing block 17 and / or the pin column 11 in a limiting device for holding the fixing block 17 and the pin column 11 for heating. The limiting device can be various fixing devices, such as molds, clamps, etc., and the heating device can be a hot air gun, a heating box, etc.

[0057] Example three

[0058] Based on the same inventive concept as examples one and two, example three discloses a mine flat link chain ring positioning pin fixing block installation mold for implementing the installation of the fixing block on the positioning pin in example two.

[0059] Referring to Figures 4-5 An embodiment of the mine flat link chain ring positioning pin fixing block installation mold provided by this embodiment is illustrated, which includes a matingly installed upper mold 21 and lower mold 22. The upper mold 21 is provided with a plurality of upper mold cavities 211, and the lower mold 22 is provided with a plurality of lower mold cavities 221. The upper mold cavities 211 and the lower mold cavities 221 are matingly installed and combined to form a plurality of complete positioning pin placement cavities 3.

[0060] The mine flat link chain ring positioning pin fixing block installation mold (hereinafter referred to as "installation mold") provided by this embodiment aims to improve the efficiency and accuracy of the installation of the fixing block on the positioning pin, ensuring that the fixing block can be firmly adhered to the pin column of the positioning pin.

[0061] Referring to Figures 4-5The installation mold 2 mainly includes a matingly installed upper mold 21 and a lower mold 22. The upper mold 21 is provided with a plurality of upper mold cavities 211. The shapes and sizes of these upper mold cavities 211 match those of the pin columns of the positioning pins and the shapes of the fixing blocks, for accommodating and positioning the pins and fixing blocks when the upper mold and the lower mold are mated. The lower mold 22 is provided with a plurality of lower mold cavities 221. These lower mold cavities 221 correspond to the upper mold cavities 211, and after the two are matedly installed, they can be combined to form complete positioning pin placement cavities 3. The positioning pin placement cavities 3 are used to accommodate the entire positioning pin and fixing block, and to ensure that the fixing block can accurately adhere to the pin column during the heating and cooling processes.

[0062] In the specific implementation process, first, the pin column part of the positioning pin is placed in the lower mold cavity 221, ensuring the accurate position of the pin column. Then, the arc-shaped groove of the fixing block is aligned with the pin column, and the fixing block is placed on the pin column. The upper mold 21 and the lower mold 22 are matedly installed, and the upper mold cavities 211 and the lower mold cavities 221 are combined to form complete positioning pin placement cavities 3. At this time, the fixing block and the positioning pin are accurately positioned in the mold. The mold is heated using appropriate heating tools, causing the fixing block to soften and adhere to the pin column. After heating is completed, the mold is allowed to cool naturally or is subjected to forced cooling, causing the fixing block to solidify and adhere firmly to the pin column. After the mold has completely cooled, the upper mold and the lower mold are opened, and the positioning pin and the fixing block are removed. The installation quality of the fixing block is checked to ensure that there is no looseness, falling off, or other phenomena.

[0063] Through the precise positioning and heating functions of the mold, the installation of the fixing block can be quickly completed, improving production efficiency. The precise structure of the mold and the heating function can ensure that the fixing block accurately adheres to the pin column, avoiding problems such as looseness and falling off.

[0064] As Figure 5 In a preferred embodiment, the placement cavity 3 includes a pin column cavity 31 corresponding to the pin column 11 of the positioning pin, a limiting plate cavity 32 corresponding to the limiting plate 16 of the positioning pin, a non-closed elastic ring cavity 33 corresponding to the non-closed elastic ring 14, and a fixing block cavity 34 corresponding to the fixing block 17.

[0065] The pin column cavity 31 is designed to correspond to the pin column 11 of the positioning pin, ensuring that the pin column can be accurately placed in the mold and providing a reference for the installation of the fixing block. The limiting plate cavity 32 is designed to correspond to the limiting plate 16 of the positioning pin, ensuring that the position of the limiting plate in the mold is accurate and will not affect the installation of the fixing block. The non-closed elastic ring cavity 33 is designed for the non-closed elastic ring 14, used to accommodate and fix the non-closed elastic ring, ensuring that its position will not move due to the heating or cooling process. The fixing block cavity 34 is designed to correspond to the fixing block 17 and is the key part of the installation mold. It ensures that the fixing block can accurately wrap around the pin column and tightly fit with the pin column.

[0066] In the specific implementation, first, the components of the positioning pin (pin column 11, limiting plate 16, non-closed elastic ring 14) are respectively placed in the corresponding cavities (pin column cavity 31, limiting plate cavity 32, non-closed elastic ring cavity 33). Then, the fixing block 17 is placed in the fixing block cavity 34, ensuring that the arc-shaped groove of the fixing block can accurately wrap around the pin column. Then the upper mold and the lower mold are fitted and installed, so that the cavities are combined into a complete positioning pin placement cavity 3. Finally, the mold is heated using appropriate heating tools, so that the fixing block softens and adheres to the pin column. After heating, the mold is naturally cooled or forced cooled, so that the fixing block solidifies and firmly adheres to the pin column. After the mold is completely cooled, the upper mold and the lower mold are opened, and the positioning pin and the fixing block are taken out. The installation quality of the fixing block is checked to ensure that there is no loosening, falling off, etc.

[0067] The design of the cavities in this embodiment ensures the accurate position of the positioning pin and the fixing block, improving the accuracy and efficiency of installation.

[0068] In an alternative embodiment, the installation mold 2 further comprises a positioning rod 23 which passes through the through holes of the upper mold 21 and the lower mold 22 to complete the positioning of the mold. The positioning rod 23 passes through the through holes of the upper mold 21 and the lower mold 22 to position and fix the upper and lower molds. During the clamping process, the positioning rod 23 ensures that the upper and lower molds can be accurately aligned, thereby improving the accuracy and efficiency of installation.

[0069] As Figures 4-5 , two rows of placement cavities 3 with opposite positions are arranged in the installation mold, and the pin column cavities 31 of the two rows of placement cavities 3 in the same column are coaxial and communicate with each other.

[0070] In an alternative embodiment, the fixing block installation mold further comprises or is configured with a heating device. That is, a heating device (not shown in the figure) can be arranged in the installation mold, or a heating device can be configured outside the installation mold. The application of the heating device in the mold is mainly to ensure that the fixing block quickly reaches a certain temperature, and the heating device in the mold can be selected as a heating wire. If the heating device is configured outside the installation mold, a heating box, a heating platform, etc. can be used. In the process of fixing the block of the mine flat link chain, the heating device is used to heat the mold to ensure that the fixing block can accurately adhere to the pin column.

[0071] In this document, the term "embodiment" means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily mean that the same embodiment is referred to, nor does it mean that the embodiments are mutually exclusive or alternative to each other. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0072] In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "upper", "lower", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0073] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "provided", "provided with", "connected", "mounted" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be directly connected, or can be indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0074] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features thereof; and such modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A flat link locating pin for a mine, the locating pin (1) comprising: A pin (11), wherein an annular groove (12) is provided in the middle of the pin (11), a spherical bead (13) is placed in the inner ring of the annular groove (12), and a non-closed elastic ring (14) is provided in the outer ring of the annular groove (12), and the non-closed elastic ring (14) surrounds the spherical bead (13); A through hole passing through the axis of the positioning pin (1), the through hole being used to install a locking pin (15), so that the end of the locking pin (15) squeezes the spherical bead (13), causing the spherical bead (13) to move outward from the annular groove (12) and thus expanding the radius of the non-closed elastic ring (14); A limit plate (16) is provided at one end of the pin (11), wherein the limit plate (16) includes a non-contact area (161) that does not contact the flat link and a contact area (162) that contacts the flat link; The invention is characterized in that it further comprises a fixing block (17), wherein the fixing block (17) comprises a main body (171) and an arc-shaped groove (172) opened on one side of the main body (171), wherein the arc-shaped groove (172) is wrapped around the cylindrical surface of the pin column (11) where the non-closed elastic ring (14) is located, and the wrapped area is located in the area where the non-contact area (161) of the vertical projection of the limiting plate (16) is located.

2. The flat link locating pin for mining according to claim 1, characterized in that: The fixing block (17) is made of elastic rubber.

3. A method for installing a flat link chain locating pin fixing block for a mine, wherein the flat link chain locating pin for a mine is the flat link chain locating pin for a mine according to any one of claims 1 to 2, characterized in that: include: The arc-shaped groove (172) of the fixed block (17) is wrapped around the cylindrical surface of the pin column (11) where the non-closed elastic ring (14) is located, and the wrapped area is located in the area where the non-contact area (161) of the limiting plate (16) is projected in the vertical direction; The fixing block (17) and / or the pin (11) are heated so that the fixing block (17) adheres to the pin (11).

4. The method for installing a flat link locating pin fixing block for a mine according to claim 3, characterized in that: The fixing block (17) and / or the pin (11) are placed in a limiting device for holding the fixing block (17) and the pin (11) and heated.

5. A flat chain link locating pin fixing block installation mold for a mine, wherein the flat chain link locating pin for a mine is the flat chain link locating pin for a mine as claimed in any one of claims 1 to 2, characterized in that: The mounting mold (2) comprises an upper mold (21) and a lower mold (22) that are mounted in a coordinated manner. The upper mold (21) is provided with a plurality of upper mold cavities (211), and the lower mold (22) is provided with a plurality of lower mold cavities (221). After being mounted in a coordinated manner, the upper mold cavities (211) and the lower mold cavities (221) are combined to form a plurality of complete positioning pin placement cavities (3).

6. The flat link locating pin fixing block installation mold for mining according to claim 5, characterized in that: The placement cavity (3) includes: a pin cavity (31) corresponding to the positioning of the pin (11), a limit plate cavity (32) corresponding to the limit plate (16), a non-closed elastic ring cavity (33) corresponding to the non-closed elastic ring (14), and a fixed block cavity (34) corresponding to the fixed block (17).

7. The flat link locating pin fixing block installation mold for mining according to claim 5, characterized in that: The mounting mold (2) further comprises a positioning rod (23), and the positioning rod (23) passes through through holes provided in the upper mold (21) and the lower mold (22) to complete the positioning of the mold.

8. The flat link locating pin fixing block installation mold for mining according to claim 5, characterized in that: Two rows of placement cavities (3) positioned opposite to each other are provided in the installation mold, and the pin cavities (31) of the two rows of placement cavities (3) in the same column are coaxial and communicated with each other.

9. The flat link locating pin fixing block installation mold for mining according to claim 5, characterized in that: The fixing block installation mold also includes or is configured with a heating device.

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