Measuring tools for joints and switches

Abstract

The present invention relates to a connection mechanism and a turnout measuring tool. The connection mechanism comprises: a first joint detachably mounted in a first pipe; a second joint detachably mounted in a second pipe, the second joint having a passage and a plurality of threaded through holes penetrating the passage; a tensioning member whose first end is connected to the first joint and whose second end extends along the length direction of the first pipe and is inserted into the passage, the second end of the tensioning member having a plurality of working grooves, each of the working grooves comprising a first side wall distributed facing the first joint, the distance between the first side wall and the first joint gradually increasing from the bottom of the groove to the groove opening; a plurality of first fasteners, the first end of each first fastener being connected in a corresponding threaded through hole, the second end being able to slide along the first side wall of the corresponding working groove toward the bottom of the groove until the first joint and the second joint are seamlessly connected. The present invention can achieve seamless connection between the first joint and the second joint through the cooperation of the tensioning member and the first fastener.

Description

Technical Field

[0001] The invention relates to the technical field of railway track equipment, in particular to a connecting mechanism and a turnout measuring tool. Background Art

[0002] As a commonly used measuring tool for railway turnout inspection or testing, the turnout measuring tool usually includes a connected hammer and square steel, and the square steel is provided with scale lines. In order to facilitate the carrying and transportation of the turnout measuring tool, the square steel is usually arranged into a detachable two-section structure, that is, the square steel includes a first sub-square steel and a second sub-square steel. At present, the following method is generally used to splice the square steel of the above-mentioned two-section structure: a connecting sleeve is sleeved on the outside of the first sub-square steel and the second sub-square steel, and fixed with bolts. However, this method will cause a gap between the first sub-square steel and the second sub-square steel, which will lead to a decrease in the measurement accuracy of the turnout measuring tool. Summary of the invention

[0003] Based on this, it is necessary to provide a connection mechanism and a turnout measuring device to address the problem that a gap exists between the first sub-square steel and the second sub-square steel, which may reduce the measuring accuracy of the turnout measuring tool.

[0004] A connecting mechanism, used for connecting a first pipe and a second pipe, wherein the second pipe has a plurality of operating through holes;

[0005] The connecting mechanism comprises: a first joint detachably sleeved in the first pipe;

[0006] A second connector detachably mounted in the second pipe member, the second connector having a passage and a plurality of threaded through holes penetrating the passage, each threaded through hole being aligned with a corresponding operation through hole;

[0007] A tensioning member with a first end connected to the first joint and a second end inserted into the channel, wherein the first end and the second end of the tensioning member are arranged opposite to each other, and the second end of the tensioning member extends along the length direction of the first pipe member, and the second end of the tensioning member has a plurality of working grooves, each working groove (including a first side wall facing the first joint, and the distance between the first side wall and the first joint gradually increases from the bottom of the groove to the groove opening);

[0008] A plurality of first fasteners, each of which has a first end connected to a corresponding threaded through hole, and a second end that can slide along the first side wall of the corresponding working groove toward the bottom of the groove until the first joint is seamlessly connected to the second joint.

[0009] In one embodiment, the first side wall of each working groove is in a slope structure, and the second end of each first fastener is in a frustum structure matched with the slope structure.

[0010] In one embodiment, the first tube and the second tube are both rectangular tubes, and the first joint and the second joint are both straight quadrangular prism structures;

[0011] The number of the threaded through holes is 2, and the two threaded through holes are symmetrically opened on two opposite sides of the second joint;

[0012] The number of the working grooves is 2, and the two working grooves are symmetrically distributed along the circumference of the tensioning member.

[0013] In one embodiment, the first joint is connected to the first pipe member through a plurality of second fasteners;

[0014] The second joint is connected to the second pipe member through a plurality of third fasteners.

[0015] In one embodiment, a plurality of first mounting through holes are formed on the first pipe member, a plurality of first blind holes are formed on the first joint, and each first blind hole and a corresponding first mounting through hole can cooperate to form a first countersunk hole for a corresponding second fastener to pass through;

[0016] The second pipe member is provided with a plurality of second installation through holes, and the second joint is provided with a plurality of second blind holes. Each second blind hole and the corresponding second installation through hole can cooperate to form a second countersunk hole for the corresponding third fastener to pass through.

[0017] In one embodiment, a first limiting boss is provided on the first joint, the first limiting boss abuts against the end surface of the first pipe, and the edge of the first limiting boss is flush with the edge of the port of the first pipe;

[0018] A second limiting boss is disposed on the second joint, the second limiting boss abuts against the end surface of the second pipe, and an edge of the second limiting boss is flush with an edge of the port of the second pipe.

[0019] In one embodiment, the tensioning member is connected to the first joint via a plurality of third fasteners.

[0020] In one embodiment, the tensioning member is provided with a plurality of first fixing through holes spaced apart along the length direction;

[0021] The first joint is provided with a third blind hole for accommodating the first end of the tensioning member, and the first joint is also provided with a plurality of second fixing through holes spaced apart along the length direction, each of the second fixing through holes comprises a first large diameter section, a small diameter section and a second large diameter section which are coaxially connected in sequence, and the small diameter section of each second fixing through hole is connected to the third blind hole;

[0022] The head of each third fastener is limited to the first large diameter section of the corresponding second fixing through hole, and the tail passes through the first fixing through hole of the tensioning member located in the small diameter section of the corresponding second fixing through hole, and is fixed in the second large diameter section of the corresponding second fixing through hole by a fastening nut.

[0023] In one embodiment, the tensioning member is in the shape of a rod, and a guide chamfer is provided on the second end of the tensioning member.

[0024] In one embodiment, the second connector has a plurality of mounting slots;

[0025] The connection mechanism further comprises: a plurality of positioning pin barrels and a plurality of positioning pins;

[0026] Each positioning pin barrel is fixed in a corresponding mounting slot;

[0027] The first end of each positioning pin is fixed on the first joint, and the second end can be embedded in the corresponding positioning pin cylinder.

[0028] In one embodiment, the first joint has a plurality of fixing grooves;

[0029] The first end of each positioning pin is fixed in the corresponding fixing groove by interference fit;

[0030] Each positioning pin barrel is fixed in the corresponding installation groove by means of interference fit.

[0031] A turnout measuring tool, comprising: the connecting mechanism described in any one of the above items, a hammer head, and a pipe member vertically connected to the hammer head and having a rectangular cross section;

[0032] The pipe fitting comprises: a first pipe fitting and a second pipe fitting, wherein the first pipe fitting is seamlessly connected to the second pipe fitting through the connecting mechanism.

[0033] In the above-mentioned connecting mechanism and turnout measuring tool, the first side wall of the working groove of the tensioning member is arranged to have a structure in which the distance between the first side wall and the first joint gradually increases along the direction from the bottom of the groove to the groove mouth, so that when the first fastener slides toward the bottom of the groove along the first side wall of the working groove, the first fastener can apply a pressure distributed along the length direction of the tensioning member to the first side wall of the working groove, thereby pushing the tensioning member to move along its length direction, that is, along the direction from the first joint to the second joint, until the first joint and the second joint are seamlessly connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figures 1 to 4 A schematic diagram of assembly between a connecting mechanism and a first pipe member and a second pipe member provided in an embodiment of the present invention;

[0036] Figure 5 A cross-sectional schematic diagram of a first connector and a second connector in an unconnected state provided by an embodiment of the present invention;

[0037] Figure 6 A schematic diagram of the contact form between the first fastener and the first side wall of the working groove provided by an embodiment of the present invention;

[0038] Figure 7 A schematic diagram of the contact form between the first fastener and the first side wall of the working groove provided in another embodiment of the present invention;

[0039] Figure 8 is a schematic structural diagram of a first connector and a second connector provided by an embodiment of the present invention in an unconnected state;

[0040] Fig. 9 A schematic cross-sectional view of a first connector provided in one embodiment of the present invention;

[0041] Fig.10 A side view of a first connector provided by an embodiment of the present invention;

[0042] Fig.11 A side view of a second connector provided according to an embodiment of the present invention.

[0043] The descriptions of the various reference numerals in the accompanying drawings are as follows:

[0044] 100-connecting mechanism, 110-first joint, 111-first blind hole, 112-first limiting boss, 113-third blind hole, 114-second fixing through hole, 1141-first large diameter section, 1142-small diameter section, 1143-second large diameter section, 115-fixing groove, 120-second joint, 121-channel, 122-threaded through hole, 123-second blind hole, 124-second limiting boss, 130- Tensioning piece, 131-working groove, 1311-first side wall, 1312-second side wall, 1313-bottom wall, 132-first fixing through hole, 140-first fastener, 150-second fastener, 160-third fastener, 170-positioning pin cylinder, 180-positioning pin; 200-first pipe fitting, 210-first mounting through hole; 300-second pipe fitting, 310-operating through hole, 320-second mounting through hole. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific implementation described herein is only used to explain the present invention and is not intended to limit the present invention.

[0046] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a centered element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. On the contrary, when an element is referred to as being "directly" connected to another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0047] In the description of the present invention, it should be understood that the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0048] like Figure 1 As shown, an embodiment of the present invention provides a connection mechanism, the connection mechanism 100 is used to connect a first pipe 200 and a second pipe 300, and the second pipe 300 has a plurality of operation through holes 310 (see Figures 2 to 4). The connection mechanism 100 includes: a first joint 110, a second joint 120, a tensioning member 130 and a plurality of first fasteners 140. Furthermore, the first joint 110 is detachably mounted in the first pipe 200; the second joint 120 is detachably mounted in the second pipe 300, and the second joint 120 has a channel 121 and a plurality of threaded through holes 122 that penetrate the channel 121, and each threaded through hole 122 is aligned with a corresponding operating through hole 310; the first end of the tensioning member 130 is connected to the first joint 110, and the second end of the tensioning member 130 extends along the length direction of the first pipe 200 and is inserted into the channel 121, the first end and the second end of the tensioning member 130 are arranged opposite to each other, and the second end of the tensioning member 130 has a plurality of working grooves 131 (see Figure 5 ), each working groove 131 includes a first side wall 1311 facing the first joint 110, and the distance between the first side wall 1311 and the first joint 110 gradually increases from the bottom of the groove to the groove mouth; the first end of each first fastener 140 is connected to the corresponding threaded through hole 122, and the second end can slide toward the bottom of the groove along the first side wall 1311 of the corresponding working groove 131 until the first joint 110 and the second joint 120 are seamlessly connected.

[0049] It should be noted that the first pipe fitting 200 and the second pipe fitting 300 involved in the embodiments of the present invention have the same structure, and can be a circular tube, a rectangular tube, or a tube with a polygonal cross section (such as a pentagon, a hexagon, a heptagon, etc.). Specifically in some embodiments of the present invention, the first pipe fitting 200 and the second pipe fitting 300 are rectangular tubes, and scale lines are set on the outer wall for measuring the turnout.

[0050] In the above-mentioned connection mechanism 100, the first side wall 1311 of the working groove 131 of the tensioning member 130 is set to a structure in which the distance from the first joint 110 gradually increases along the direction from the groove bottom to the groove mouth, so that when the first fastener 140 slides along the first side wall 1311 of the working groove 131 to the groove bottom, the first fastener 140 can apply a pressure distributed along the length direction of the tensioning member 130 to the first side wall 1311 of the working groove 131, thereby pushing the tensioning member 130 to move along its length direction, that is, move along the direction from the first joint 110 to the second joint 120, until the first joint 110 and the second joint 120 are seamlessly connected. It can be seen that the above-mentioned connection mechanism 100 can achieve seamless connection between the first joint 110 and the second joint 120 through the cooperation between the tensioning member 130 and the first fastener 140.

[0051] Regarding the contact form between the second end of the first fastener 140 and the first side wall 1311 of the working groove 131 during the sliding process along the first side wall 1311 of the working groove 131, in one embodiment of the present invention, as shown in FIG. Figure 6As shown, the contact form between each first fastener 140 and the first side wall 1311 of the corresponding working groove 131 is line contact. In this way, under the premise of ensuring that the first fastener 140 can slide along the first side wall 1311 of the working groove 131, the structure of the first fastener 140 can be simplified, and it is not necessary to set each part of the second end of the first fastener 140 to a structure that can contact the first side wall 1311 of the working groove 131.

[0052] Specifically, the second end of the first fastener 140 may be cylindrical, wherein a circular ridge between an end surface and the curved surface of the second end of the first fastener 140 contacts the first side wall 1311 of the working groove 131 .

[0053] In another embodiment of the present invention, Figure 7 As shown, the contact form between each first fastener 140 and the first side wall 1311 of the corresponding working groove 131 is surface contact. In this way, the contact area between each first fastener 140 and the first side wall 1311 of the corresponding working groove 131 can be increased, so that after the first joint 110 and the second joint 120 are seamlessly connected, the first fastener 140 can effectively fix the tensioning member 130 to avoid shaking between the first pipe 200 and the second pipe 300, thereby ensuring the measurement accuracy of the turnout measurement tool.

[0054] In some embodiments, the first sidewall 311 of each working groove 131 is an inclined structure, and the second end of each first fastener 140 is a truncated cone structure. It should be noted that the angle between the side of the truncated cone structure and the central axis is the same as the inclination angle of the inclined structure.

[0055] In one embodiment of the present invention, Figure 7 As shown, each working groove 131 also includes: a second side wall 1312 arranged opposite to the first side wall 1311 and a bottom wall 1313 connected between the first side wall 1311 and the second side wall 1312; the second side wall 1312 is arranged in the vertical direction, and the bottom wall 1313 is arranged in the horizontal direction. The working groove 131 of this structure is simple in structure and easy to open. It should be noted that the width of the bottom wall 1313 of each working groove 131 is greater than the minimum diameter of the second end of the corresponding first fastener 140.

[0056] In one embodiment of the present invention, Figure 2 and Figure 5As shown, the first pipe 200 and the second pipe 300 are both rectangular pipes, the first joint 110 and the second joint 120 are straight quadrangular prism structures; the number of threaded through holes 122 is 2, and the two threaded through holes 122 are symmetrically opened on two opposite sides of the second joint 120; the number of working grooves 131 is 2, and the two working grooves 131 are symmetrically distributed along the circumference of the tensioning member 130. In this way, under the premise of effectively fixing the tensioning member 130 in the channel 121 of the second joint 120, the number of threaded through holes 122 and working grooves 131 is reduced, which can not only reduce the processing strength of the second joint 120 and the tensioning member 130, but also ensure the strength of the second joint 120 and the tensioning member 130.

[0057] Specifically, the first fastener 140 can be a hexagon socket fastening screw, the diameter of which is larger than the aperture of the corresponding threaded through hole 122, and the inner diameter of the wrench slot of the hexagon socket fastening screw head is smaller than the inner diameter of the corresponding threaded through hole 122. In this way, the first fastener 140 can be prevented from falling off from the corresponding threaded through hole 122, and the wrench can be prevented from entering the wrench slot of the hexagon socket fastening screw to rotate the hexagon socket screw. It can be understood that each hexagon socket fastening screw can be fully screwed into the second joint 120 first, and then the second joint 120 can be installed in the second pipe 300.

[0058] In one embodiment of the present invention, Figures 2 to 5 As shown, the first joint 110 can be connected to the first pipe 200 through a plurality of second fasteners 150 ; and the second joint 120 can be connected to the second pipe 300 through a plurality of third fasteners 160 .

[0059] Specifically in some embodiments, such as Figure 5 As shown, the first pipe 200 is provided with a plurality of first mounting through holes 210, the first joint 110 is provided with a plurality of first blind holes 111, each first blind hole 111 and the corresponding first mounting through hole 210 can cooperate to form a first countersunk hole for the corresponding second fastener 150 to pass through; the second pipe 300 is provided with a plurality of second mounting through holes 320, the second joint 120 is provided with a plurality of second blind holes 123, each second blind hole 123 and the corresponding second mounting through hole 320 can cooperate to form a second countersunk hole for the corresponding third fastener 160 to pass through. In this way, the head of the second fastener 150 can be buried in the first pipe 200, and the head of the third fastener 160 can be buried in the second pipe 300, so as to avoid the second fastener 150 and the third fastener 160 from scratching the operator, and also improve the aesthetics of the turnout measuring tool. Optionally, the second fastener 150 and the third fastener 160 can be countersunk screws.

[0060] Optionally, the first pipe 200 and the second pipe 300 are both rectangular pipes, the first joint 110 and the second joint 120 are straight quadrangular prism structures; the plurality of second fasteners 150 are divided into a plurality of groups along the length direction of the first joint 110 (see Figure 3 and Figure 4 ), the number of each set of second fasteners 150 is two, and they are symmetrically arranged on two opposite sides of the first joint 110 (see Figure 2 and Figure 5 ); a plurality of third fasteners 160 are divided into a plurality of groups along the length direction of the second joint 120 (see Figure 3 and Figure 4 ), the number of each set of third fasteners 160 is 2, and they are symmetrically arranged on two opposite sides of the second joint 120 (see Figure 2 and Figure 5 Specifically, the plurality of second fasteners 150 may be divided into two groups along the length direction of the first joint 110 , and the plurality of third fasteners 160 may be divided into two groups along the length direction of the second joint 120 .

[0061] Furthermore, if Figure 3 , Figure 4 and Figure 8 As shown, a first limiting boss 112 is provided on the first joint 110, the first limiting boss 112 abuts against the end face of the first pipe fitting 200, and the edge of the first limiting boss 112 is flush with the edge of the port of the first pipe fitting 200; a second limiting boss 124 is provided on the second joint 120, the second limiting boss 124 abuts against the end face of the second pipe fitting 300, and the edge of the second limiting boss 124 is flush with the edge of the port of the second pipe fitting 300. In this way, after the first joint 110 is placed in the first pipe 200, the first limiting boss 112 can be pushed against the port of the first pipe 200 to prevent the first joint 110 from shifting along the length direction of the first pipe 200 when the second fastener 150 is installed, thereby speeding up the installation progress of the second fastener 150; similarly, after the second joint 120 is placed in the second pipe 300, the second limiting boss 124 can be pushed against the port of the second pipe 300 to prevent the second joint 120 from shifting along the length direction of the second pipe 300 when the third fastener 160 is installed, thereby speeding up the installation progress of the third fastener 160.

[0062] It should be noted that when scale lines are provided on the surfaces of the first pipe 200 and the second pipe 300, in order to ensure the continuity of the scale, scale lines may also be provided on the surfaces of the first limiting boss 112 and the second limiting boss 124 (see Figure 1 ).

[0063] Optionally, the first limiting boss 112 may be formed integrally with the first connector 110 to provide a connection strength between the two. Similarly, the second limiting boss 124 may also be formed integrally with the second connector 120 to provide a connection strength between the two.

[0064] In one embodiment of the present invention, the tensioning member 130 is connected to the first joint 110 via a plurality of third fasteners (not shown in the figure).

[0065] Optionally, the number of the second fasteners 150 is 2 to 4 (for example, 2, 3 or 4), and the two second fasteners 150 are distributed along the length direction of the tensioning member 130 .

[0066] Specifically in some embodiments, such as Figure 5 As shown, the tensioning member 130 is provided with a plurality of first fixing through holes 132 spaced apart along the length direction; Fig. 9 As shown, the first joint 110 is provided with a third blind hole 113 for accommodating the first end of the tensioning member 130, and the first joint 110 is also provided with a plurality of second fixing through holes 114 spaced apart along the length direction, each second fixing through hole 114 comprises a first large diameter section 1141, a small diameter section 1142 and a second large diameter section 1143 which are coaxially connected in sequence, and the small diameter section 1142 of each second fixing through hole 114 is connected with the third blind hole 113; the head of each third fastener is limited in the first large diameter section 1141 of the corresponding second fixing through hole 114, and the tail passes through the first fixing through hole 132 of the tensioning member 130 located in the small diameter section 1142 of the corresponding second fixing through hole 114, and is fixed in the second large diameter section 1143 of the corresponding second fixing through hole 114 by a fastening nut. Specifically, the third fastener may be a bolt.

[0067] It should be noted that when the first joint 110 and the second joint 120 are connected, the tensioning member 130 and the first joint 110 may be connected by the third fastener first, and then the first joint 110 may be fixed in the first pipe 200 .

[0068] In one embodiment of the present invention, Figure 8 As shown, the tensioning member 130 is rod-shaped, and a guide chamfer is provided on the second end of the tensioning member 130. In this way, the second end of the tensioning member 130 can be quickly inserted into the channel 121 of the second joint 120, thereby saving the docking time of the first pipe 200 and the second pipe 300.

[0069] Optionally, the angle of the guide chamfer may be 30° to 60°. For example, it may be 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc.

[0070] In one embodiment of the present invention, the second connector 120 has a plurality of mounting grooves; Figure 2 , Figure 4 , Figure 5 and Figure 8 As shown, the connection mechanism 100 further includes: a plurality of positioning pin barrels 170 and a plurality of positioning pins 180; each positioning pin barrel 170 is fixed in a corresponding mounting groove; the first end of each positioning pin 180 is fixed on the first joint 110, and the second end of each positioning pin 180 can be embedded in the corresponding positioning pin barrel 170. After the first joint 110 and the second joint 120 are connected, the positioning pin barrel 170 can be used to limit the positioning pin 180, so as to prevent the tensioning member 130 from shaking in the channel 121 of the second joint 120, thereby preventing the first joint 110 and the second joint 120 from shaking.

[0071] Alternatively, if Fig.10 As shown, the number of the plurality of positioning pins 180 is two, and the plurality of positioning pins 180 are symmetrically distributed on both sides of the tensioning member 130. Fig.11 As shown, the number of the plurality of positioning pin barrels 170 is two, and the plurality of positioning pin barrels 170 are symmetrically distributed on both sides of the channel 121. In this way, the tensioning member 130 can be effectively prevented from shaking, and the number of the positioning pins 180 and positioning pin barrels 170 to be installed can be reduced accordingly.

[0072] Specifically in some embodiments, such as Figure 5 As shown, the first joint 110 has a plurality of fixing grooves 115; the first end of each positioning pin 180 is fixed in the corresponding fixing groove 115 by interference fit; each positioning pin barrel 170 is fixed in the corresponding installation groove by interference fit. It should be noted that the outer diameter of each positioning pin 180 is slightly larger than the diameter of the corresponding fixing groove 115, so that the two can be interference fit, and when the two are assembled, each positioning pin 180 can be hammered into the corresponding fixing groove 115 by external force. Similarly, the outer diameter of each positioning pin barrel 170 is slightly larger than the diameter of the corresponding installation groove, so that the two can be interference fit, and when the two are assembled, each positioning pin barrel 170 can be hammered into the corresponding installation groove by external force. The fixing method of the positioning pin 180 and the positioning pin barrel 170 is set in this way, and other installation parts (such as fasteners) do not need to be used, which can reduce the installation cost of the positioning pin 180 and the positioning pin barrel 170.

[0073] In one embodiment of the present invention, a turnout measuring tool is also provided, which includes: the above-mentioned connecting mechanism 100, a hammer head, and a pipe fitting vertically connected to the hammer head and having a rectangular cross-section; the pipe fitting includes: a first pipe fitting 200 and a second pipe fitting 300, and the first pipe fitting 200 is seamlessly spliced ​​with the second pipe fitting 300 through the connecting mechanism 100.

[0074] In the above-mentioned turnout measuring tool, the first side wall 1311 of the working groove 131 of the tensioning member 130 is arranged to have a structure in which the distance between the first side wall 1311 and the first joint 110 gradually increases along the direction from the bottom of the groove to the groove mouth, so that when the first fastener 140 slides toward the bottom of the groove along the first side wall 1311 of the working groove 131, the first fastener 140 can apply a pressure distributed along the length direction of the tensioning member 130 to the first side wall 1311 of the working groove 131, thereby pushing the tensioning member 130 to move along its length direction, that is, from the first joint 110 to the second joint 120, until the first joint 110 and the second joint 120 are seamlessly connected, thereby improving the measurement accuracy of the turnout measuring tool.

[0075] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A turnout measuring tool, characterized in that: The turnout measuring tool comprises: a connecting mechanism (100), a hammer head, and a pipe member vertically connected to the hammer head and having a rectangular cross section; The pipe fitting comprises: a first pipe fitting (200) and a second pipe fitting (300), wherein the second pipe fitting (300) has a plurality of operation through holes (310); The connecting mechanism (100) comprises: a first joint (110) detachably mounted inside the first pipe (200); a second joint (120) detachably mounted inside the second pipe member (300), the second joint (120) having a channel (121) and a plurality of threaded through holes (122) penetrating the channel (121), each threaded through hole (122) being aligned with a corresponding operation through hole (310); a tensioning member (130) having a first end connected to the first joint (110) and a second end inserted into the channel (121), the first end and the second end of the tensioning member (130) being arranged opposite to each other, the second end of the tensioning member (130) extending along the length direction of the first pipe (200), the second end of the tensioning member (130) having a plurality of working grooves (131), each of the working grooves (131) comprising a first side wall (1311) facing the first joint (110), the distance between the first side wall (1311) and the first joint (110) gradually increasing along the direction from the bottom of the groove to the notch; A plurality of first fasteners (140), each of which has a first end connected to a corresponding threaded through hole (122), and a second end that can slide toward the bottom of the corresponding working groove (131) along a first side wall (1311) until the first joint (110) and the second joint (120) are seamlessly connected.

2. The turnout measuring tool according to claim 1, characterized in that: The first side wall (1311) of each working groove (131) is in the form of an inclined surface structure, and the second end of each first fastener (140) is in the form of a frustum structure that matches the inclined surface structure.

3. The turnout measuring tool according to claim 1 or 2, characterized in that: The first pipe member (200) and the second pipe member (300) are both rectangular pipe members, and the first joint (110) and the second joint (120) are both straight quadrangular prism structures; The number of the threaded through holes (122) is two, and the two threaded through holes (122) are symmetrically arranged on two opposite sides of the second joint (120); The number of the working grooves (131) is two, and the two working grooves (131) are symmetrically distributed along the circumference of the tensioning member (130).

4. The turnout measuring tool according to claim 1 or 2, characterized in that: The first joint (110) is connected to the first pipe (200) via a plurality of second fasteners (150); The second joint (120) is connected to the second pipe (300) via a plurality of third fasteners (160).

5. The turnout measuring tool according to claim 4, characterized in that: The first pipe member (200) is provided with a plurality of first installation through holes (210), and the first joint (110) is provided with a plurality of first blind holes (111), and each first blind hole (111) can cooperate with a corresponding first installation through hole (210) to form a first countersunk hole for allowing a corresponding second fastener (150) to pass through; The second pipe member (300) is provided with a plurality of second mounting through holes (320), and the second joint (120) is provided with a plurality of second blind holes (123), and each second blind hole (123) can cooperate with a corresponding second mounting through hole (320) to form a second countersunk hole for allowing a corresponding third fastener (160) to pass through.

6. The turnout measuring tool according to claim 4, characterized in that: A first limiting boss (112) is provided on the first joint (110), the first limiting boss (112) abuts against the end surface of the first pipe (200), and the edge of the first limiting boss (112) is flush with the edge of the port of the first pipe (200); The second joint (120) is provided with a second limiting boss (124), the second limiting boss (124) abuts against the end surface of the second pipe (300), and the edge of the second limiting boss (124) is flush with the edge of the port of the second pipe (300).

7. The turnout measuring tool according to claim 1 or 2, characterized in that: The tensioning member (130) is connected to the first joint (110) via a plurality of third fastening members.

8. The turnout measuring tool according to claim 7, characterized in that: The tensioning member (130) is provided with a plurality of first fixing through holes (132) spaced apart along the length direction; The first joint (110) is provided with a third blind hole (113) for accommodating the first end of the tensioning member (130); the first joint (110) is also provided with a plurality of second fixing through holes (114) spaced apart along the length direction; each second fixing through hole (114) comprises a first large diameter section (1141), a small diameter section (1142) and a second large diameter section (1143) which are coaxially connected in sequence; the small diameter section (1142) of each second fixing through hole (114) is connected to the third blind hole (113); The head of each third fastener is limited to the first large diameter section (1141) of the corresponding second fixing through hole (114), and the tail passes through the first fixing through hole (132) of the tensioning member (130) located in the small diameter section (1142) of the corresponding second fixing through hole (114), and is fixed in the second large diameter section (1143) of the corresponding second fixing through hole (114) by a fastening nut.

9. The turnout measuring tool according to claim 1 or 2, characterized in that: The tensioning member (130) is rod-shaped, and a guide chamfer is provided on the second end of the tensioning member (130).

10. The turnout measuring tool according to claim 1 or 2, characterized in that: The second joint (120) has a plurality of installation grooves; The connection mechanism (100) further comprises: a plurality of positioning pin barrels (170) and a plurality of positioning pins (180); Each positioning pin barrel (170) is fixed in a corresponding mounting groove; The first end of each positioning pin (180) is fixed on the first joint (110), and the second end can be embedded in the corresponding positioning pin cylinder (170).

11. The turnout measuring tool according to claim 10, characterized in that: The first joint (110) has a plurality of fixing grooves (115); The first end of each positioning pin (180) is fixed in the corresponding fixing groove (115) by means of interference fit; Each positioning pin barrel (170) is fixed in the corresponding installation groove by means of interference fit.

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