Lossless disassembling device for steel rail cementing insulation joint

Abstract

The invention discloses a nondestructive disassembling device for a steel rail cementing insulation joint, which belongs to the technical field of railway auxiliary equipment and comprises an expansion sleeve, a conical expansion pin, an expansion connecting component, a disassembling connecting frame body and a hollow bidirectional hydraulic cylinder. Wherein the expansion sleeve is mounted in an opening of the glue joint, and the inner conical surface of the expansion sleeve is matched with the outer conical surface of the expansion pin; the front end of the hollow two-way hydraulic cylinder is connected with the expansion sleeve through the expansion connecting assembly, the front end of the hydraulic rod is controlled to be pushed into the expansion pin, and then the expansion sleeve can be fastened in an open hole of the glue joint. During disassembly, the rear end of the hydraulic cylinder is supported and fixed through the disassembly connecting frame body, the rear end of the hydraulic rod is connected with the expansion sleeve, then the hydraulic rod is reversely controlled to pull the expansion sleeve, and disassembly of the glued joint can be achieved. According to the device, the cementing joint can be efficiently disassembled, meanwhile, the steel rail and the clamping plate are prevented from being damaged, and adverse effects on a railway track are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of railway auxiliary equipment, and in particular to a non-destructive disassembly device for a rail adhesively-jointed insulating joint. Background Art

[0002] The railroad track rail glued joint uses a high-strength adhesive to glue the joint and the rail together and achieve insulation between the two. When maintaining and repairing the rail glued joint, it is necessary to dismantle the glued joints on both sides of the rail. At present, the glued joints are usually dismantled by melting the glue with fire, which is troublesome, time-consuming and labor-intensive, and easily damages the rail and the joint. The prior art discloses a device that uses a hydraulic cylinder to push a wedge block into the gap between the rail waist and the joint to achieve the dismantling of the glued joint. However, since the high-strength adhesive will form a hard solid layer after curing, it is difficult to insert the wedge block, so the use effect of the glued joint dismantling device is not satisfactory. However, the prior art discloses a device for disassembling a glued joint by using a push rod and a push piece to cause a lateral displacement of two sections of rails at a glued joint. However, since the force required to cause a lateral displacement of two sections of rails at an insulating joint is too large, the structural design of the device for disassembling the glued joint tends to be complicated. While the lateral displacement of the two sections of rails is completed to cause the glued joint to detach from the rail, the track will be uneven, which will have an adverse effect on the railway track. Summary of the invention

[0003] In view of the above problems, the present invention proposes a non-destructive disassembly device for rail glued insulating joints, which can realize efficient disassembly of glued joints while avoiding damage to rails and splints and will not have adverse effects on railway tracks.

[0004] The invention discloses a non-destructive disassembling device for a rail adhesively-bonded insulating joint, which comprises an expansion sleeve, a conical expansion pin, an expansion connection component, a disassembling connection frame and a hollow bidirectional hydraulic cylinder.

[0005] The expansion sleeve is a cylindrical structure with a conical inner wall surface; it is matched and plugged into the inner hole of the adhesive joint and positioned by a circumferential annular shoulder; an opening arranged along the axial direction of the expansion sleeve is circumferentially opened at the front end of the expansion sleeve.

[0006] The conical expansion pin is a conical structure, inserted into the expansion sleeve, and the outer wall surface matches the inner wall surface of the expansion sleeve.

[0007] The hollow bidirectional hydraulic cylinder is used to apply a forward thrust to the conical expansion pin and a backward pulling force to the expansion sleeve.

[0008] When thrust is applied, the front end of the hydraulic cylinder is connected to the end of the expansion sleeve through the expansion connection assembly, so that the front end of the hydraulic rod is directed toward the end of the tapered expansion pin; the hydraulic cylinder controls the hydraulic rod to push the tapered expansion pin forward. During the process, the outer diameter of the expansion sleeve will expand and deform outward with the depth of the tapered expansion pin, so that the expansion sleeve and the inner hole are tightened.

[0009] When the pulling force is applied, the hydraulic cylinder is set in the reverse direction, and the end of the hydraulic rod is threadedly connected with the expansion sleeve by disassembling the connection frame support; the hydraulic cylinder controls the hydraulic rod to pull the expansion sleeve to realize the disassembly of the adhesive joint.

[0010] The present invention also provides a non-destructive disassembly method for a rail adhesively bonded insulating joint, the specific steps of which are:

[0011] Step 1: Insert the front threaded end of the expansion sleeve 1 into the opening of the adhesive joint.

[0012] Step 2: Insert the tapered expansion pin into the expansion sleeve for axial positioning.

[0013] Step 3: Insert the expansion sleeve into the circular hole on the front end of the hydraulic cylinder connecting sleeve, and connect it with the rear end thread of the expansion sleeve.

[0014] Step 4: Insert and fix the hydraulic cylinder connecting sleeve into the front of the hollow bidirectional hydraulic cylinder.

[0015] Step 5: Start the central control bidirectional hydraulic cylinder, apply thrust to the conical expansion pin through the hollow bidirectional hydraulic cylinder, push the conical expansion pin forward, and make the conical expansion pin continuously push into the inside of the expansion sleeve, so that the expansion sleeve will expand radially outward and tighten the expansion sleeve.

[0016] Step 6: Close the hollow bidirectional hydraulic cylinder, loosen and remove the expansion sleeve; at the same time, remove the hollow bidirectional hydraulic cylinder.

[0017] Step 7: Connect the front end of the disassembly connection sleeve with the rear threaded end of the expansion sleeve by threading;

[0018] Step 8: Install the support frame on the rail, fix the lateral position, and support the hydraulic cylinder with the support frame.

[0019] Step 9: Connect the rear end of the hydraulic rod of the hollow bidirectional hydraulic pump with the threaded connection sleeve of the disassembly connection sleeve.

[0020] Step 10: Start the hollow bidirectional hydraulic cylinder in reverse direction, and use the hydraulic rod to apply tension to the expansion sleeve, pulling the dynamic expansion sleeve to separate the adhesive joint from the rail.

[0021] The advantages of the present invention are:

[0022] 1. The non-destructive disassembly device for the rail glued insulating joint of the present invention can efficiently, quickly and non-destructively separate and disassemble the glued insulating joint from the rail without causing any adverse effects on the railway track.

[0023] 2. The non-destructive disassembly device for the rail glued insulated joint of the present invention adopts a modular design and can be assembled on site, making it easy to carry the entire device.

[0024] 3. The non-destructive disassembly device for the rail glued insulating joint of the present invention is easy to operate, and two people can quickly complete the separation and disassembly of the glued joint and the rail within 2 minutes.

[0025] 4. The non-destructive disassembly device for the rail adhesively-bonded insulated joint of the present invention adopts a lightweight design, a purely mechanical structure, simple maintenance and a low failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the non-destructive disassembly device for rail adhesive insulation joints of the present invention when installing the expansion sleeve;

[0027] Figure 2 It is a schematic diagram of the overall structure of the non-destructive disassembly device for rail adhesive insulation joints of the present invention when disassembling the clamping plate;

[0028] Figure 3 It is a schematic diagram of the expansion mode of the expansion sleeve of the non-destructive disassembly device for the rail adhesively-bonded insulated joint of the present invention.

[0029] In the figure:

[0030] 1-Expansion sleeve 2-Conical expansion pin 3-Expansion connection assembly

[0031] 4-Disassemble the connection assembly 5-Central control bidirectional hydraulic cylinder 6-Glue joint

[0032] 101-annular boss 301-hydraulic cylinder connecting sleeve 302-expansion connecting sleeve

[0033] 303-handle 401-pull support 402-disassembly connection sleeve

[0034] 501-Hydraulic rod 501a-Expansion sleeve push rod DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0036] The non-destructive disassembly device for rail adhesive insulation joints of the present invention comprises an expansion sleeve 1, a conical expansion pin 2, an expansion connection assembly 3, a disassembly connection frame 4 and a hollow bidirectional hydraulic cylinder 5. Figure 1 , Figure 2 As shown, all components can be disassembled and installed according to usage and transportation requirements.

[0037] The outer wall of the expansion sleeve 1 is cylindrical and is designed with threads; the inner wall is conical. At the same time, an annular boss 101 is designed circumferentially in the middle of the outer wall; the outer wall thread of the expansion sleeve 1 is divided into a front thread end located in front of it and a rear thread section located behind it by the annular boss 101; and the front thread section is designed with at least four openings arranged axially along the expansion sleeve 1 at equal angles on the circumference, and the openings pass through the front end of the front thread section. In the expansion sleeve 1 of the above structure, the front thread section cooperates with the inner hole of the adhesive joint 6 and is inserted into the inner hole of the adhesive joint 6. During the insertion process of the expansion sleeve 1, the insertion limit of the expansion sleeve 1 is achieved by the annular boss 101.

[0038] The conical expansion pin 2 is a conical structure, and the size of its outer wall is the same as the size of the conical surface of the inner wall of the cylindrical expansion sleeve. The conical expansion pin 2 is inserted into the inner hole of the expansion sleeve 1 from the rear end of the expansion sleeve 1 until the front end face of the conical expansion pin 2 is flush with the front end face of the expansion sleeve 1. At this time, the outer wall of the conical expansion sleeve 2 is completely in contact with the inner wall of the expansion sleeve 1. Further, a forward thrust is applied to the conical expansion pin 2, and the conical expansion pin continues to move forward. During this process, since the front threaded section of the expansion sleeve 1 is provided with four openings, the outer diameter size will undergo different degrees of outward expansion deformation with different insertion depths of the conical expansion pin 2, such as Figure 3 As shown, the front threaded section of the expansion sleeve 1 is pressed against the inner hole of the adhesive joint 6, and the expansion sleeve 1 is made of cemented carbide, and its hardness is greater than that of the steel / iron splint. Then, the thread of the front threaded section of the expansion sleeve 1 will be embedded into the wall of the inner hole of the adhesive joint 6 to form an interference fit, thereby completing the connection between the expansion sleeve 1 and the adhesive joint, and setting the disassembly force point for the subsequent disassembly of the adhesive joint 6.

[0039] The forward thrust of the conical expansion pin 2 is applied through the hollow bidirectional hydraulic cylinder 5. The central control bidirectional hydraulic cylinder 5 can provide a push and pull force of 30 tons of Newtons. The hydraulic rod 501 of the central control bidirectional hydraulic cylinder 5 realized by the expansion connection component 3 acts on the conical expansion pin 2.

[0040] The expansion connection assembly 3 includes a hydraulic cylinder connection sleeve 301 and an expansion connection sleeve 302. The rear portion of the hydraulic cylinder connection sleeve 301 is a cylindrical structure, the inner diameter of which matches the outer diameter of the front portion of the hollow bidirectional hydraulic cylinder 5, and is sleeved on the front portion of the hollow bidirectional hydraulic cylinder 5, and the two are fixed by interference fit. At the same time, an L-shaped handle 303 is designed on the outer wall surface of the rear portion of the hydraulic cylinder sleeve 301, which is used to lift the hollow bidirectional hydraulic cylinder 5 by holding the handle 303 after the hydraulic cylinder sleeve 301 is sleeved and fixed with the hollow bidirectional hydraulic cylinder 5 to perform operations.

[0041] The front circumference of the hydraulic cylinder connection sleeve 301 is a conical surface, and the front end has a front end face; a circular hole is coaxially opened on the front end face to cooperate with the expansion connection sleeve 302. The inner hole of the expansion connection sleeve 302 is a threaded structure, and the outer wall of the end is designed with an annular shoulder. The annular shoulder cooperates with the front end face of the hydraulic cylinder connection sleeve 301 to achieve forward limit of the expansion connection sleeve 302. The inner wall of the expansion connection sleeve 302 is designed with threads, which is used to cooperate with the rear threaded end of the aforementioned expansion sleeve 1.

[0042] The front end of the hydraulic rod 501 of the bidirectional central control hydraulic cylinder 5 is provided with an expansion sleeve push rod 501a, and the front end face of the expansion sleeve push rod 501a can contact the end face of the conical expansion pin 2 through the inner hole of the expansion sleeve 302. Thus, the hollow bidirectional hydraulic cylinder 5 drives the hydraulic rod 501 to move forward to contact the end face of the conical expansion pin 2 through the annular shoulder at the end of the expansion sleeve 302 and the front end face of the hydraulic cylinder connection sleeve 301, and further, the conical expansion pin 2 can be pushed forward by the hydraulic cylinder to expand and fix between the expansion sleeve 1 and the inner hole of the adhesive joint 6.

[0043] After the expansion sleeve 1 and the inner hole of the adhesive joint 6 are expanded and fixed, the adhesive joint 6 is disassembled by the hollow bidirectional hydraulic cylinder 5 cooperating with the disassembly connection component 4 to apply reverse pulling force to the expansion sleeve 1.

[0044] The disassembly connection frame 4 includes a drawing support 401 and a disassembly connection sleeve 402. The drawing support 401 has a bottom plate 401a, a rear side plate 401b and side plates 401c on the left and right sides. The left and right side plates 401c are U-shaped plates, one side of which is used as a rail head positioning side for cooperating with the side of the rail head; the other side is used as a bottom plate connecting side for connecting the bottom plate 401a; and the lower side is a rail top positioning side for cooperating with the rail top. The left and right side plates 401c are arranged perpendicular to the bottom plate 401a, located on the left and right sides of the bottom plate 401a, and the end of the bottom plate connecting side is connected to the bottom plate 401a. The rear side plate 401b is arranged perpendicular to the bottom plate 401a, located on the rear side of the bottom plate 401a, and the bottom plate connecting side of the left and right side plates 401c is connected to the bottom plate 401a. The left and right side plates 401c can also be connected by a reinforcing plate to reinforce the structure of the overall drawing support 401.

[0045] The pull-out support 401 of the above structure is sleeved on the rail, wherein the rail head positioning side of the left side plates 401c contacts the side of the rail head, the rail top positioning side contacts the rail top, and the front side of the bottom plate 401a contacts the side of the rail foot where the adhesive joint 5 is located. In this way, the pull-out support 401 is fixed in the horizontal direction of the rail.

[0046] The disassembly connection sleeve 402 is a cylindrical structure with a threaded inner hole. The front end of the disassembly connection sleeve 402 is threadedly connected with the rear threaded end of the expansion sleeve 1 through a thread. At the same time, the rear end of the hydraulic rod 501 of the hollow bidirectional hydraulic pump 5 passes through the opening on the rear side surface 401b of the drawing support 401, and is threadedly connected with the rear end of the disassembly connection sleeve 402 through the external thread at the end. Further, the hollow bidirectional hydraulic pump 5 is plugged and fixed in the opening on the rear side plate 401 through the annular joint coaxially arranged with the hydraulic rod 401 at its rear end, and the rear end surface of the hollow bidirectional hydraulic pump 5 is fitted with the wall surface of the rear side plate, and then the central control bidirectional hydraulic pump 5 is supported by the drawing support 401. Therefore, the hydraulic rod 501 is controlled to move in the opposite direction through the hollow bidirectional hydraulic pump 5, and the tension is applied to the adhesive joint 6 through the disassembly connection sleeve 402-expansion sleeve 1. Under the support of the drawing support 401, the expansion sleeve 1 is pulled, thereby completing the separation of the adhesive joint and the rail. The overall structure of the non-destructive disassembly device for the rail glued insulating joint of the present invention adopts a modular design. Each module is placed in a storage box and brought to the work site. After assembly on site, the disassembly operation of the glued joint is realized. The specific operation steps are as follows:

[0047] Step 1: Insert the front threaded end of the expansion sleeve 1 into the opening of the adhesive joint 7 , and use the annular boss 101 to achieve axial positioning of the expansion sleeve 1 .

[0048] Step 2: Insert the conical expansion pin 2 into the expansion sleeve 1, and apply forward thrust to the conical expansion pin 2 through the manual box to achieve preliminary axial positioning among the conical expansion pin 2, the expansion sleeve 1 and the inner hole of the adhesive joint 6.

[0049] Step 3: After the expansion sleeve 302 is inserted into the circular hole on the front end of the hydraulic cylinder connecting sleeve 301, it is threadedly matched with the rear threaded end of the expansion sleeve 1.

[0050] Step 4: Insert and fix the hydraulic cylinder connecting sleeve 301 to the front of the hollow bidirectional hydraulic cylinder 5.

[0051] Step 5: Start the central control bidirectional hydraulic cylinder 5, apply thrust to the conical expansion pin 2 through the hollow bidirectional hydraulic cylinder 5, push the conical expansion pin 2 forward, and make the conical expansion pin 2 continuously push into the expansion sleeve 1, so that the expansion sleeve 1 undergoes radial deformation under the action of the conical expansion pin 2, so that the outer surface thread of the expansion sleeve 1 is embedded into the inner hole wall of the adhesive joint 6 to form an interference connection.

[0052] Step 6: Close the hollow bidirectional hydraulic cylinder 5, loosen and remove the expansion connection sleeve 302; and remove the hollow bidirectional hydraulic cylinder 5 at the same time.

[0053] Step 7: Connect the front end of the disassembly sleeve 402 with the rear threaded end of the expansion sleeve 1 by threading.

[0054] Step 8: Install the pull-out support 401 on the side of the rail where the adhesive joint 6 is located, and fix the lateral position.

[0055] Step 9: Insert the rear end annular joint of the hollow bidirectional hydraulic cylinder 5 into the side plug hole of the pulling support 401, adjust the position of the pulling support 401 in the rail length direction, and make the rear end of the hydraulic rod 501 of the hollow bidirectional hydraulic pump 5 threadedly connected with the disassembly connection sleeve 402.

[0056] Step 10: Start the hollow bidirectional hydraulic cylinder 5 in reverse direction. With the support of the pulling support 401, the hollow bidirectional hydraulic cylinder 5 applies a pulling force to the expansion sleeve 1 to pull the dynamic expansion sleeve 1, thereby separating the adhesive joint 6 from the rail.

Claims

1. Non-destructive disassembly device for rail glued insulated joints, characterized by: It includes an expansion sleeve, a conical expansion pin, an expansion connection assembly, a disassembly connection frame and a hollow bidirectional hydraulic cylinder; The expansion sleeve is a cylindrical structure with a conical inner wall surface; it is matched and plugged into the inner hole of the adhesive joint and positioned by a circumferential annular shoulder; an opening arranged along the axial direction of the expansion sleeve is opened in the circumferential direction of the front end of the expansion sleeve; The conical expansion pin is a conical structure, inserted into the expansion sleeve, and the outer wall surface matches the inner wall surface of the expansion sleeve; The hollow bidirectional hydraulic cylinder is used to apply a forward thrust to the conical expansion pin and a backward pulling force to the expansion sleeve; When thrust is applied, the front end of the hydraulic cylinder is connected to the end of the expansion sleeve through the expansion connection assembly, so that the front end of the hydraulic rod faces the end of the conical expansion pin; the hydraulic cylinder controls the hydraulic rod to push the conical expansion pin forward. During this process, the outer diameter of the expansion sleeve will expand and deform outward with the depth of the conical expansion pin, so that the expansion sleeve and the inner hole are tightened; When the pulling force is applied, the hydraulic cylinder is set in the reverse direction, and the end of the hydraulic rod is threadedly connected with the expansion sleeve by disassembling the connection frame support; the hydraulic cylinder controls the hydraulic rod to pull the expansion sleeve to realize the disassembly of the adhesive joint.

2. The non-destructive disassembly device for rail adhesively bonded insulated joints according to claim 1, characterized in that: The outer wall of the expansion sleeve is designed with external threads, and the hardness is greater than the hardness of the clamping joint; when the expansion sleeve expands outward, the external threads of the expansion sleeve will be embedded in the inner hole wall of the adhesive joint to form an interference fit.

3. The non-destructive disassembly device for rail adhesively bonded insulated joints according to claim 1, characterized in that: The expansion connection assembly includes a hydraulic cylinder connecting sleeve and an expansion connection sleeve; wherein, the rear part of the hydraulic cylinder connecting sleeve is a cylindrical structure, the inner diameter of which matches the outer diameter of the front part of the hollow bidirectional hydraulic cylinder, and is sleeved on the front part of the hollow bidirectional hydraulic cylinder; the front part of the hydraulic cylinder connecting sleeve is a conical surface in the circumference, and the front end has a front end face; a circular hole is coaxially opened on the front end face, which cooperates with the expansion connection sleeve; the inner hole of the expansion connection sleeve is a threaded structure, and the outer wall at the end is designed with an annular shoulder; the forward limiting of the expansion connection sleeve is achieved by cooperating with the front end face of the hydraulic cylinder connecting sleeve; the inner wall of the expansion connection sleeve is designed with a thread, which is used to connect with the rear end of the aforementioned expansion sleeve.

4. The non-destructive disassembly device for rail adhesively insulated joints according to claim 3, characterized in that: An L-shaped handle is designed on the outer wall surface of the rear part of the hydraulic cylinder sleeve.

5. The non-destructive disassembly device for rail adhesively bonded insulated joints according to claim 1, characterized in that: The front end of the hydraulic rod is provided with an expansion sleeve push rod, and the front end surface of the expansion sleeve push rod contacts the end surface of the conical expansion pin to push the conical expansion pin.

6. The non-destructive disassembly device for rail adhesively insulated joints according to claim 1, characterized in that: The disassembly connection frame includes a pulling support and a disassembly connection sleeve; wherein the pulling support has a bottom plate, a rear side plate and left and right side plates; the left and right side plates are U-shaped plates, one side of which is used as a rail head positioning side for cooperating with the side of the rail head; the other side is used as a bottom plate connecting side for connecting the bottom plate; the lower side is a rail top positioning side for cooperating with the rail top; the left and right side plates are arranged perpendicular to the bottom plate, located on the left and right sides of the bottom plate, and the end of the bottom plate connecting side is connected to the bottom plate; the rear side plate is arranged perpendicular to the bottom plate, located on the rear side of the bottom plate, and the bottom plate connecting sides of the left and right side plates are connected to the bottom plate; the pulling support sleeve is on the rail, wherein the rail head positioning side of the left side plates contacts the side of the rail head, the rail top positioning side contacts the rail top, and the side contacts the side of the rail foot on the side where the adhesive joint is located, thereby fixing the position of the pulling support in the horizontal direction of the rail. The disassembly connection sleeve is a cylindrical structure, and the inner hole is provided with threads. The front end of the disassembly connection sleeve is connected with the rear end of the expansion sleeve through threads.

7. A non-destructive disassembly method for rail adhesively bonded insulated joints, characterized in that: The specific steps are: Step 1: Insert the front threaded end of the expansion sleeve 1 into the opening of the adhesive joint; Step 2: Insert the conical expansion pin into the expansion sleeve for axial positioning; Step 3: Insert the expansion sleeve into the circular hole on the front end of the hydraulic cylinder connecting sleeve and connect it with the rear end thread of the expansion sleeve; Step 4: Insert and fix the hydraulic cylinder connecting sleeve to the front of the hollow bidirectional hydraulic cylinder; Step 5: Start the central control bidirectional hydraulic cylinder, apply thrust to the conical expansion pin through the hollow bidirectional hydraulic cylinder, push the conical expansion pin forward, so that the conical expansion pin is continuously pushed into the expansion sleeve, so that the expansion sleeve is deformed radially outward, and the expansion sleeve is tightened; Step 6: Close the hollow bidirectional hydraulic cylinder, loosen and remove the expansion sleeve; at the same time, remove the hollow bidirectional hydraulic cylinder; Step 7: Connect the front end of the disassembly connection sleeve with the rear threaded end of the expansion sleeve by threading; Step 8: Install the support frame on the rail, fix the horizontal position, and support the hydraulic cylinder with the support frame; Step 9: Connect the rear end of the hydraulic rod of the hollow bidirectional hydraulic pump with the disassembly connection sleeve by threading; Step 10: Start the hollow bidirectional hydraulic cylinder in reverse direction, and use the hydraulic rod to apply tension to the expansion sleeve, pulling the dynamic expansion sleeve to separate the adhesive joint from the rail.

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