Outer locking frame heating strip fixing device

Abstract

The invention relates to the field of track snow melting devices, in particular to an outer locking frame heating strip fixing device which comprises a cross beam plate, two lug seats which are symmetrically arranged left and right are fixedly installed on the upper side of the cross beam plate, the lug seats are fixedly connected with an outer locking frame in a bolt connection mode, and a left supporting arm and a right supporting arm are hinged to the left end and the right end of the cross beam plate respectively. The left supporting arm and the right supporting arm are driven by the cross beam plate to carry out surrounding type clamping on the outer locking frame, so that the arc-shaped clamping hoop on the left supporting arm limits the heating strip connector, and the heating strip is clamped through the U-shaped clamping hoop on the right supporting arm. And meanwhile, the U-shaped hoops on the left supporting arm and the right supporting arm abut against the vertical section of the heating strip in a self-adaptive mode and are matched with the attaching block to abut against and limit the lower side face of the horizontal section of the heating strip, and the pushing assembly continuously pushes the moving plate, so that the U-shaped hoops automatically compensate vibration and temperature difference deformation, and contact thermal resistance caused by gaps is eliminated.

Description

Technical Field

[0001] The invention relates to the field of track snow melting devices, in particular to a device for fixing a heating strip of an outer locking frame. Background Art

[0002] The external locking frame is the core component of the railway turnout switching system. It is used to accurately lock the turnout point rail to ensure the safety of train operation. In cold areas or in winter, the external locking frame is prone to mechanical jamming due to snow and ice accumulation, which may cause turnout switching failure in severe cases. To ensure the reliable operation of the equipment, heating strips need to be installed on the external locking frame to eliminate ice and snow accumulation through electric heating to melt ice and maintain the normal function of the locking frame.

[0003] Currently, heating strips are mainly fixed to the surface of the external locking frame through rigid clamps or clamps. This method relies on bolts to tighten the two sides of the clamps to make the heating strip fit the outer wall of the external locking frame. However, the external locking frame usually has a special-shaped structure that is wide at the top and narrow at the bottom, and the sizes of different models vary significantly. During installation, the position of the clamps needs to be repeatedly adjusted and the bolts need to be tightened one by one. This operation is cumbersome and inefficient, and it is difficult to adapt to the needs of rapid on-site installation.

[0004] In addition, the continuous vibration and temperature differences when the train passes can easily cause slight deformation of the existing fixing device, resulting in a micro gap between the heating strip and the outer locking frame. The existing fixing device cannot dynamically compensate for such deformation. Once a gap is formed, the heat conduction path is blocked and the contact thermal resistance increases significantly, resulting in the inability to effectively transfer the heat energy of the heating strip to the locking frame, greatly reducing the ice melting efficiency, and even causing equipment failure. Summary of the Invention

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a fixing device for the heating strip of an external locking frame, comprising a crossbeam plate, two ear seats arranged symmetrically on the left and right are fixedly installed on the upper side of the crossbeam plate, the ear seats are fixedly connected to the external locking frame by bolts, and the left and right ends of the crossbeam plate are hinged with a left support arm and a right support arm respectively, and an arc-shaped clamp for limiting the cylindrical connecting head of the heating strip is fixedly installed on the left support arm, and the left support arm and the right support arm are both connected with a U-shaped clamp for adaptively tightening the heating strip through a supporting unit.

[0006] The left support arm and the right support arm are both L-shaped structures.

[0007] The abutment unit includes a movable plate hinged on the side of the U-shaped clamp away from the center of the beam plate, and the movable plates on the left and right sides are respectively connected to the left arm and the right arm for sliding left and right. The left arm and the right arm always push the movable plate toward the center of the beam plate through the pushing components arranged thereon.

[0008] The horizontal sections of the left and right arms are provided with waist-shaped grooves, and the horizontal sections of the left and right arms are equipped with fitting blocks along the corresponding waist-shaped groove openings for fitting the lower side of the horizontal section of the heating strip.

[0009] Preferably, a fixing plate for blocking the outer locking frame is fixedly installed on the front side of the crossbeam plate, and a vertical groove is provided on the ear seat and is arranged to pass through from front to back.

[0010] Preferably, a threaded column is fixedly installed on the upper side of the beam plate, a hexagonal column is fixedly installed on the upper side of the threaded column, a synchronization block is provided on the outer side of the hexagonal column for sliding up and down, and a connecting rod is hinged between the synchronization block and the upper ends of the left and right arms.

[0011] Preferably, a nut is rotatably provided at the lower end of the synchronization block, the inner diameter of the nut is larger than the hexagonal column, and the upper end surfaces of the hexagonal column and the ear seat are both located at the lower part of the upper side surface of the outer locking frame.

[0012] Preferably, linkage parts are provided at the hinge axes of the left support arm, the right support arm and the cross beam plate for sliding back and forth, tension springs are provided between the left support arm, the right support arm and the linkage parts at corresponding positions, notches are provided at equal intervals along the circumference of the rear edge of the linkage parts, and a gear ring plate is fixedly installed at the coaxial position of the linkage parts on the cross beam plate.

[0013] Preferably, the pushing assembly includes an L-shaped chamber opened inside the vertical sections of the left arm and the right arm, a one-way valve is fixedly installed on the lower side of the vertical section of the L-shaped chamber, a plunger is provided on the upper side of the vertical section of the L-shaped chamber for sliding up and down, and a pushing spring is provided between the movable plate and the inner wall of the horizontal section of the L-shaped chamber.

[0014] Preferably, the fitting block is a cylindrical structure with a planar structure on the upper side, and wedge plates are provided inside the horizontal sections of the left and right arms for sliding left and right, and coil springs are provided between the left and right arms and the corresponding wedge plates.

[0015] Preferably, a tooth plate is fixedly installed on the side of the wedge plate away from the center of the beam plate, and adjustment blocks are provided inside the horizontal sections of the left and right arms for sliding up and down. Ratchet plates connected to the adjustment blocks for sliding up and down are provided at equal intervals along the left and right directions on the lower side of the adjustment blocks.

[0016] Preferably, the distance between two adjacent ratchet plates is greater than the distance between two adjacent teeth on the tooth plate, and a return spring is provided between the ratchet plate and the adjustment block.

[0017] Preferably, a joystick is provided on the front side of the adjustment block for sliding left and right, and guide grooves for sliding corresponding joysticks are provided on the horizontal sections of the left arm and the right arm. The part of the guide groove close to the center of the beam plate is a vertical structure, and the part of the guide groove away from the center of the beam plate is an inclined structure.

[0018] The beneficial effects of the present invention are: 1. The present invention adopts a crossbeam plate to drive the left support arm and the right support arm to perform an embracing clamp on the external locking frame, so that the arc-shaped clamp on the left support arm limits the heating strip connector, and at the same time, the vertical section of the heating strip is adaptively tightened by the U-shaped clamp on the left support arm and the right arm, and the lower side of the horizontal section of the heating strip is pressed against and limited by the fitting block, and the pushing component continuously pushes the moving plate, so that the U-shaped clamp automatically compensates for vibration and temperature difference deformation, always applies effective fitting force to the heating strip, eliminates the contact thermal resistance caused by the gap, and ensures the heat conduction efficiency.

[0019] Second, the present invention manually places the crossbeam plate on the outer locking frame, and quickly adjusts the position by moving the left and right arms. The left and right arms can then be locked by simply tightening the nuts. Under the action of the tension spring, the notch on the linkage member engages with the teeth of the gear ring plate to prevent the left and right arms from reversing, ensuring locking stability, greatly improving installation efficiency, and quickly adapting to the special-shaped structure of the outer locking frame that is wide at the top and narrow at the bottom.

[0020] 3. The present invention adopts a cylindrical fitting block with a flat structure on the upper side to adaptively fit the lower side of the horizontal section of the heating strip. The cylindrical surface of the fitting block is pushed by the wedge plate under the action of the spiral spring to automatically compensate for deformation. The tooth plate and the ratchet plate are unidirectionally engaged to prevent the wedge plate from moving in the opposite direction, thereby maintaining a continuous supporting force on the horizontal section of the heating strip and avoiding failure of the fitting due to vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and examples.

[0022] Figure 1 It is a schematic structural diagram of the present invention when the heating strip is fixed on the outer locking frame.

[0023] Figure 2 It is a structural schematic diagram of the present invention when the crossbeam plate is connected to the outer locking frame.

[0024] Figure 3 It is a front view of the crossbeam plate, left support arm, left support arm and U-shaped clamp in the present invention.

[0025] Figure 4 It is a partial cross-sectional view of the crossbeam plate, threaded column, hexagonal column and nut in the present invention.

[0026] Figure 5 It is a partial cross-sectional view of the left support arm, linkage member, gear ring plate and crossbeam plate in the present invention.

[0027] Figure 6 It is a structural schematic diagram of the left support arm, arc-shaped clamp, fitting block and movable plate in the present invention.

[0028] Figure 7 It is a structural schematic diagram of the U-shaped clamp and the movable plate in the present invention.

[0029] Figure 8 It is a partial cross-sectional view of the left support arm, the pushing assembly, the wedge plate and the latch plate in the present invention.

[0030] Figure 9 It is a structural schematic diagram of the latch plate, ratchet plate, adjustment block and operating lever in the present invention.

[0031] In the figure: 1. crossbeam plate; 2. left support arm; 3. right support arm; 4. abutment unit; 5. U-shaped clamp; 6. fitting block; 11. ear seat; 12. fixing plate; 13. threaded column; 14. hexagonal column; 15. synchronization block; 16. connecting rod; 17. linkage; 21. arc clamp; 41. moving plate; 42. pushing assembly; 61. wedge plate; 62. tooth plate; 63. adjusting block; 64. ratchet plate; 151. nut; 171. gear ring plate; 421. L-shaped chamber; 422. one-way valve; 423. plunger; 631. joystick. DETAILED DESCRIPTION

[0032] The following embodiments of the present invention are described in detail. The embodiments described below are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention. Where specific techniques or conditions are not specified in the embodiments, the techniques or conditions described in the literature in the art or in the product specifications shall be followed.

[0033] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 A device for fixing the heating strip of an external locking frame includes a crossbeam plate 1, on the upper side of which are fixedly mounted two left and right symmetrically arranged ear seats 11, which are fixedly connected to the outer locking frame by bolts, and the left and right ends of the crossbeam plate 1 are hinged with a left support arm 2 and a right support arm 3 respectively, and an arc-shaped clamp 21 for limiting the cylindrical connecting head of the heating strip is fixedly mounted on the left support arm 2, and a U-shaped clamp 5 for adaptively tightening the heating strip is connected to both the left support arm 2 and the right support arm 3 through abutment units 4.

[0034] See Figure 2 、 Figure 3 and Figure 4 A fixing plate 12 for blocking the outer locking frame is fixedly installed on the front side of the crossbeam plate 1. A vertical slot is arranged front and back through the ear seat 11. The left support arm 2 and the right support arm 3 are both L-shaped structures.

[0035] When the heating strip needs to be fixed on the outer locking frame, the operator manually places the crossbeam plate 1 on the upper part of the outer locking frame that has been installed on the track, and makes the fixing plate 12 on the crossbeam plate 1 located in front of the outer locking frame. At this time, the operator moves the crossbeam plate 1, and the crossbeam plate 1 drives the vertical groove on it to be sleeved on the bolts connecting the outer locking frame and the track through the ear seat 11, thereby utilizing the existing connecting bolts of the outer locking frame to realize the connection and locking between the crossbeam plate 1 and the outer locking frame, without the need for additional connecting parts, thereby ensuring the adaptability to the outer locking frame while improving the convenience of installation.

[0036] When the bolts on the outer locking frame pass through the vertical slots on the corresponding ear seats 11, the cross beam plate 1 is moved downward so that the lower side of the cross beam plate 1 is tightly against the outer locking frame, thereby increasing the contact area between the outer locking frame and the cross beam plate 1, thereby increasing the stability of the cross beam plate 1 on the outer locking frame. Subsequently, the locking nut is screwed into the front part of the bolt passing through the ear seat 11, so that the locking nut pushes the cross beam plate 1 to move backward synchronously when moving backward, until the cross beam plate 1 drives the fixing plate 12 thereon to rest against the outer locking frame, thereby completing the connection between the cross beam plate 1 and the outer locking frame. This connection operation can be performed on the outer locking frame that has been connected to the track without the need to disassemble the outer locking frame, and can meet the requirements of installing heating strips later.

[0037] In the initial state, the lower ends of the left support arm 2 and the right support arm 3 are both away from the cross beam plate 1, so that when the operator places the cross beam plate 1 on the outer locking frame, the cross beam plate 1 can drive the left support arm 2 and the right support arm 3 to move upward to the left and right sides of the outer locking frame, solving the problem that the existing split fixing bracket needs to be assembled on the outer locking frame, thereby improving the convenience of installation.

[0038] Then the operator covers the heating strip from bottom to top on the outer locking frame, and then the operator manually rotates the left arm 2 and the right arm 3 so that the lower ends of the left arm 2 and the right arm 3 move toward the direction close to the outer locking frame, thereby causing the left arm 2 and the right arm 3 to drive the U-shaped clamp 5 to push the vertical section of the heating strip through the abutment unit 4 thereon, so that the U-shaped clamp 5 can not only push the vertical section of the heating strip to fit tightly on the outer locking frame, but also can adaptively maintain the abutment force on the heating strip through the abutment unit 4, to ensure that the heating strip is always tightly fitted on the outer locking frame under temperature difference and vibration environment.

[0039] It should be noted that if Figure 1 and Figure 6 As shown, a support plate is fixedly installed on the left arm 2 and located below the arc-shaped clamp 21.

[0040] When the U-shaped clamp 5 limits the heating part of the heating strip, the left arm 2 drives the support plate on it to rotate to the lower part of the cylindrical connector of the heating strip, thereby supporting the cylindrical connector of the heating strip. At the same time, the left arm 2 drives the arc-shaped clamp 21 to cover the outside of the cylindrical connector of the heating strip, thereby limiting the cylindrical connector of the heating strip.

[0041] See Figure 1 、 Figure 3 and Figure 5 A linkage part 17 is provided at the hinge axis of the left support arm 2, the right support arm 3 and the cross beam plate 1 for sliding back and forth. A tension spring is provided between the left support arm 2, the right support arm 3 and the linkage part 17 at the corresponding position. Notches are provided at equal intervals along the circumference of the rear edge of the linkage part 17. A gear ring plate 171 is fixedly installed at the coaxial position of the cross beam plate 1 corresponding to the linkage part 17.

[0042] It should be noted that if Figure 5 As shown, the gear ring plate 171 consists of a ring plate structure at the rear and a plurality of teeth fixedly installed on the front side of the ring plate structure at equal intervals along the circumference of the ring plate structure. The teeth correspond one-to-one to the notches of the linkage member 17, so that in the initial state, the tension spring pulls the linkage member 17 backward through its own elastic force, so that the linkage member 17 drives the notch thereon to be located on the outside of the teeth of the gear ring plate 171.

[0043] This ensures that when the lower end of the left arm 2 or the right arm 3 rotates toward the direction approaching the outer locking frame, the left arm 2 and the right arm 3 drive the linkage 17 thereon to rotate synchronously, so that the edge of the notch on the linkage 17 contacts the inclined surface of the teeth of the gear ring plate 171, thereby causing the linkage 17 to move forward along the inclined surface of the teeth and stretch the tension spring. When the lower end of the left arm 2 or the right arm 3 wants to rotate in the direction away from the outer locking frame, the inner wall of the notch on the linkage 17 fits directly into the teeth of the gear ring plate 171, so that the gear ring plate 171 blocks the linkage 17 from reversing, thereby realizing the unidirectional rotation of the left arm 2 or the right arm 3. The operator only needs to manually move the left arm 2 or the right arm 3 to quickly position the heating strip against the limit.

[0044] See Figure 1 、 Figure 2 、 Figure 3 and Figure 4 A threaded column 13 is fixedly installed on the upper side of the crossbeam 1, and a hexagonal column 14 is fixedly installed on the upper side of the threaded column 13. A synchronization block 15 is provided on the outer side of the hexagonal column 14 for sliding up and down. A connecting rod 16 is hinged between the synchronization block 15 and the upper ends of the left support arm 2 and the right support arm 3.

[0045] See Figure 3 and Figure 4The lower end of the synchronization block 15 is rotatably provided with a nut 151, the inner diameter of the nut 151 is larger than the hexagonal column 14, and the upper end surface of the hexagonal column 14 and the ear seat 11 are both located at the lower part of the upper side of the outer locking frame.

[0046] When the operator manually rotates one of the left arm 2 or the right arm 3, the left arm 2 or the right arm 3 can drive the synchronization block 15 to slide on the hexagonal column 14 through the connecting rod 16 thereon, and the movement of the synchronization block 15 can drive the other of the left arm 2 or the right arm 3 to move synchronously through another connecting rod 16, so that the left arm 2 or the right arm 3 can rotate synchronously. The operator only needs to support the heating strip with one hand and move one of the left arm 2 or the right arm 3 with the other hand to complete the initial positioning of the heating strip, solving the problem in the prior art that two people need to cooperate to complete the installation.

[0047] When the operator manually moves the left arm 2 and the right arm 3 to the specified position, the synchronization block 15 drives the nut 151 to move down to the position of the threaded column 13, and at this time the left arm 2 or the right arm 3 has completed the preliminary abutment positioning of the heating strip through the U-shaped clamp 5. Then the operator uses a wrench to screw the nut 151 into the outside of the threaded column 13, so that the nut 151 drives the synchronization block 15 to move downward, and the synchronization block 15 pushes the upper ends of the left arm 2 and the right arm 3 away from each other through the connecting rod 16, thereby realizing that the lower ends of the left arm 2 and the right arm 3 are close to each other, so that the heating strip is clamped by the U-shaped clamp 5, completing the locking of the position of the heating strip.

[0048] See Figure 3 、 Figure 6 and Figure 8 The horizontal sections of the left support arm 2 and the right support arm 3 are provided with waist-shaped grooves, and the horizontal sections of the left support arm 2 and the right support arm 3 are equipped with fitting blocks 6 along the corresponding waist-shaped groove openings for fitting the lower side of the horizontal section of the heating strip. The fitting blocks 6 are cylindrical structures with a flat structure on the upper side.

[0049] When the synchronization block 15 drives the nut 151 to move down to the position of the threaded column 13, the horizontal sections of the left support arm 2 and the right support arm 3 move to the lower part of the horizontal section of the heating strip, so that the left support arm 2 and the right support arm 3 drive the planar structure of the bonding block 6 thereon to press against the horizontal section of the heating strip. Since the bonding block 6 cooperates with the waist-shaped groove notch, the bonding block 6 can move up and down and rotate, so that when the planar structure of the bonding block 6 is pressed against the horizontal section of the heating strip, the reaction force of the heating strip on the bonding block 6 can cause the bonding block 6 to rotate automatically, so that the planar structure of the bonding block 6 is adaptively pressed against the horizontal section of the heating strip, ensuring the pressure against the lower part of the heating strip.

[0050] It should be noted that when the nut 151 moves downward to the threaded area of ​​the threaded column 13, the left arm 2 and the right arm 3 drive the U-shaped clamp 5 thereon to only simply limit and abut the heating part of the heating strip, and do not achieve the tightening of the heating part of the heating strip. Moreover, since there is a certain gap between the heating part of the heating strip and the outer locking frame itself, the nut 151 can be screwed on the threaded column 13 and push the U-shaped clamp 5 to press the heating part of the heating strip against the outer locking frame, while making the planar structure of the fitting block 6 press against the lower part of the heating strip.

[0051] It should also be noted that if Figure 8 As shown, a rectangular groove perpendicular to its planar structure is opened inside the bonding block 6, and a limiting square rod inserted into the rectangular groove of the bonding block 6 is fixedly installed on the horizontal sections of the left arm 2 and the right arm 3. The width of the limiting square rod is smaller than the rectangular groove, so that the bonding block 6 can rotate at a certain angle, thereby preventing the bonding block 6 from rotating freely, causing its planar structure to rotate to the bottom, resulting in the phenomenon that the planar structure of the bonding block 6 is not in contact with the heating strip.

[0052] See Figure 1 、 Figure 3 、 Figure 6 and Figure 8 The abutment unit 4 includes a movable plate 41 hinged on the side of the U-shaped clamp 5 away from the center of the beam plate 1. The movable plates 41 on the left and right sides are respectively connected to the left support arm 2 and the right support arm 3 for sliding left and right. The left support arm 2 and the right support arm 3 always push the movable plate 41 toward the center of the beam plate 1 through the pushing assembly 42 set thereon.

[0053] See Figure 8 The pushing component 42 includes an L-shaped chamber 421 opened inside the vertical sections of the left arm 2 and the right arm 3. A one-way valve 422 is fixedly installed on the lower side of the vertical section of the L-shaped chamber 421. A plunger 423 is provided on the upper side of the vertical section of the L-shaped chamber 421 for sliding up and down. A pushing spring is provided between the movable plate 41 and the inner wall of the horizontal section of the L-shaped chamber 421, and an extrusion spring is provided between the upper side of the plunger 423 and the inner wall of the vertical section of the L-shaped chamber 421.

[0054] It should be noted that if Figure 3 and Figure 8 As shown, a lever extending to the outside of the left arm 2 or the right arm 3 is fixedly installed on the outside of the plunger 423. A through groove for the lever to slide up and down is also provided on the left arm 2 or the right arm 3. The operator manually pushes the lever upward in advance, so that the lever drives the plunger 423 to move upward until the lower end surface of the plunger 423 moves to the upper side of the through groove, thereby connecting the L-shaped chamber 421 with the outside. Then the operator uses a syringe to inject hydraulic oil into the interior of the L-shaped chamber 421 through the through groove.

[0055] Then, the external force on the lever is removed, so that the extrusion spring pushes the plunger 423 downward by its own elastic force, and the plunger 423 pushes the hydraulic oil through the one-way valve 422 to flow into the horizontal section of the L-shaped chamber 421, and the hydraulic oil fills the horizontal section of the L-shaped chamber 421. At this time, the push spring is in a compressed state. Since the one-way valve 422 can prevent the hydraulic oil from flowing back to the vertical section of the L-shaped chamber 421, and the hydraulic oil cannot be compressed, the movable plate 41 cannot move away from the outer locking frame. At the same time, due to the elastic force of the push spring on the movable plate 41, the movable plate 41 always has a tendency to move toward the direction close to the outer locking frame, so that the movable plate 41 can automatically extend to compensate for the deformation caused by vibration and temperature difference and the gap problem.

[0056] It should be noted that the hydraulic oil is selected by those skilled in the art and can maintain fluidity in a low temperature environment.

[0057] When the nut 151 is tightened on the threaded column 13, the left arm 2 or the right arm 3 drives the U-shaped clamp 5 at the corresponding position to press against the vertical section of the heating strip through the movable plate 41 thereon, and since the movable plate 41 is hinged to the U-shaped clamp 5, the U-shaped clamp 5 can adaptively fit the vertical section of the heating strip, so that when the left arm 2 or the right arm 3 continues to rotate from a vertical posture, the U-shaped clamp 5 can still apply a surface contact pressure force to the vertical section of the heating strip to ensure the tightening effect.

[0058] It should be noted that the movable plate 41 in the initial state is locked on the left arm 2 or the right arm 3 by a locking screw to prevent the movable plate 41 from moving when the hydraulic oil is poured. It also prevents the U-shaped clamp 5 from pushing the movable plate 41 to move when it is not in contact with the heating strip. When the U-shaped clamp 5 is pressed against the heating strip, the locking screw is loosened so that the movable plate 41 can compensate for the gap by moving. The locking screw is not shown in the figure.

[0059] It should also be noted that if Figure 7 As shown, a fixed block symmetrically arranged up and down is fixedly installed on the side of the U-shaped clamp 5 away from the outer locking frame. The two fixed blocks on the same U-shaped clamp 5 are located at the upper and lower positions of the movable plate 41 at corresponding positions. The fixed block is driven by the U-shaped clamp 5 to contact the movable plate 41 to limit the rotation angle of the U-shaped clamp 5.

[0060] See Figure 3 、 Figure 6 and Figure 8 A wedge-shaped plate 61 is provided inside the horizontal section of the left arm 2 and the right arm 3 for sliding left and right, and a coil spring is provided between the left arm 2, the right arm 3 and the corresponding wedge plate 61.

[0061] When the horizontal structure of the bonding block 6 rests against the horizontal section of the heating strip, the reaction force of the horizontal section of the heating strip on the bonding block 6 pushes the bonding block 6 downward, so that the cylindrical surface of the bonding block 6 rests against the wedge surface of the wedge plate 61. At the same time, the coil spring pushes the wedge plate 61 toward the outer locking frame through its own elastic force, so that the wedge plate 61 pushes the bonding block 6 upward and presses against the horizontal section of the heating strip, thereby automatically compensating for the deformation problem caused by vibration and temperature difference.

[0062] In order to prevent the wedge plate 61 from moving away from the outer locking frame, the present invention has designed the following structure: Figure 3 、 Figure 6 、 Figure 8 and Figure 9 A tooth plate 62 is fixedly installed on the side of the wedge plate 61 away from the center of the crossbeam plate 1, and an adjustment block 63 is provided inside the horizontal section of the left support arm 2 and the right support arm 3 to slide up and down. A ratchet plate 64 connected to the adjusting block 63 for sliding up and down is provided at equal intervals along the left and right directions. A return spring is provided between the ratchet plate 64 and the adjusting block 63, and the distance between two adjacent ratchet plates 64 is greater than the distance between two adjacent teeth on the tooth plate 62.

[0063] The corresponding ratchet plate 64 is pushed downward by the elastic force of the return spring and inserted into the tooth groove of the tooth plate 62. When the wedge plate 61 and the tooth plate 62 move toward the outer locking frame, the tooth plate 62 can push the ratchet plate 64 upward through the inclined surface of the tooth thereon. Conversely, the vertical surface of the ratchet plate 64 blocks the tooth plate 62 from moving away from the outer locking frame, thereby ensuring that the wedge plate 61 always pushes the bonding block 6, thereby ensuring that the bonding block 6 applies a stable supporting force to the lower part of the heating strip.

[0064] At the same time, the distance between two adjacent ratchet plates 64 is greater than the distance between two adjacent teeth on the tooth plate 62, so that each ratchet plate 64 can independently block the tooth plate 62 from moving away from the outer locking frame, thereby refining the control of the ratchet plate 64 over the moving stroke of the tooth plate 62 and improving the stability of the supporting force applied by the bonding block 6 on the lower part of the heating strip.

[0065] In order to prevent the ratchet plate 64 from controlling the moving direction of the latch plate 62 in the initial state, which causes the heating strip to be unable to push the bonding block 6 downward, thereby causing the bonding block 6 to move to the top of the waist-shaped groove of the left arm 2 and the right arm 3 in the initial state, causing the bonding block 6 to lose the ability to move again to compensate for the gap between the heating strips, the present invention makes the following design: Continue to refer to Figure 3 、 Figure 6 、 Figure 8 and Figure 9A joystick 631 is provided on the front side of the adjustment block 63 for sliding left and right. Guide grooves for the corresponding joysticks 631 to slide are provided on the horizontal sections of the left arm 2 and the right arm 3. The part of the guide groove close to the center of the beam plate 1 is a vertical structure, and the part of the guide groove away from the center of the beam plate 1 is an inclined structure.

[0066] In the initial state, the operating lever 631 is located at the upper part of the horizontal section of the left arm 2 or the right arm 3, so that the operating lever 631 drives the ratchet plate 64 through the adjustment block 63 without contacting the tooth plate 62, so that the tooth plate 62 can move in both directions. When the fitting block 6 is pressed against the heating strip, the operator manually moves the operating lever 631 downward along the vertical section of the guide groove. During this process, the operating lever 631 drives the ratchet plate 64 to contact the tooth plate 62 and compresses the return spring.

[0067] The operator then manually moves the joystick 631 to the inside of the inclined structure of the guide groove, thereby limiting the upper and lower positions of the adjustment block 63 through the left and right limit joysticks 631, so that the return spring pushes the ratchet plate 64 and the latch plate 62 to always be in contact through its own elastic force.

[0068] It should be noted that those skilled in the art may add a limiting structure to the joystick 631 according to actual conditions, such as providing a thread on the outer surface of the joystick 631, and fixing the joystick 631 to the left arm 2 or the right arm 3 by screwing a nut into the joystick 631, thereby firmly limiting the joystick 631. Such methods are common means in the prior art and will not be elaborated in this article.

[0069] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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 should not be understood as limiting the present invention.

[0070] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature designated as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0071] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0072] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for fixing a heating strip of an outer locking frame, comprising a crossbeam plate, characterized in that: Two symmetrically arranged ear seats are fixedly installed on the upper side of the crossbeam plate. The ear seats are fixedly connected to the outer locking frame by bolts. The left and right ends of the crossbeam plate are hinged with a left support arm and a right support arm respectively. The left support arm is fixedly installed with an arc-shaped clamp for limiting the cylindrical connecting head of the heating strip. The left and right arms are both connected to a U-shaped clamp for adaptively tightening the heating strip through a supporting unit. The left support arm and the right support arm are both L-shaped structures; The abutment unit includes a movable plate hinged on the side of the U-shaped clamp away from the center of the beam plate, and the movable plates on the left and right sides are respectively connected to the left and right supporting arms for sliding left and right. The left and right supporting arms always push the movable plates toward the center of the beam plate through the pushing components provided thereon; The horizontal sections of the left and right arms are provided with waist-shaped grooves, and the horizontal sections of the left and right arms are equipped with fitting blocks along the corresponding waist-shaped groove openings for fitting the lower side of the horizontal section of the heating strip.

2. The outer locking frame heating strip fixing device according to claim 1, characterized in that: A fixing plate for blocking the outer locking frame is fixedly installed on the front side of the crossbeam plate, and a vertical groove arranged through the front and back is opened on the ear seat.

3. The external locking frame heating strip fixing device according to claim 1, characterized in that: A threaded column is fixedly installed on the upper side of the beam plate, a hexagonal column is fixedly installed on the upper side of the threaded column, a synchronization block is set on the outer side of the hexagonal column for sliding up and down, and a connecting rod is hinged between the synchronization block and the upper ends of the left and right support arms.

4. The outer locking frame heating strip fixing device according to claim 3, characterized in that: The lower end of the synchronous block is rotatably provided with a nut, the inner diameter of the nut is larger than the hexagonal column, and the upper end surfaces of the hexagonal column and the ear seat are both located at the lower part of the upper side surface of the outer locking frame.

5. The external locking frame heating strip fixing device according to claim 1, characterized in that: The left and right support arms are provided with linkage parts at the hinge axes of the cross beam plate for sliding back and forth. Tension springs are provided between the left and right support arms and the linkage parts at corresponding positions. Notches are provided at equal intervals along the circumference of the rear edge of the linkage parts. A gear ring plate is fixedly installed at the coaxial position of the linkage parts on the cross beam plate.

6. The external locking frame heating strip fixing device according to claim 1, characterized in that: The pushing assembly includes an L-shaped chamber opened inside the vertical sections of the left and right arms, a one-way valve is fixedly installed on the lower side of the vertical section of the L-shaped chamber, a plunger is provided on the upper side of the vertical section of the L-shaped chamber for sliding up and down, and a pushing spring is provided between the movable plate and the inner wall of the horizontal section of the L-shaped chamber.

7. The external locking frame heating strip fixing device according to claim 1, characterized in that: The fitting block is a cylindrical structure with a flat upper side. Wedge plates are provided inside the horizontal sections of the left and right arms for sliding left and right. Coil springs are provided between the left and right arms and the corresponding wedge plates.

8. The external locking frame heating strip fixing device according to claim 7, characterized in that: A tooth plate is fixedly installed on the side of the wedge plate away from the center of the crossbeam plate, and adjustment blocks are provided inside the horizontal sections of the left and right arms for sliding up and down. Ratchet plates connected to the adjustment blocks for sliding up and down are provided at equal intervals along the left and right directions on the lower side of the adjustment blocks.

9. The external locking frame heating strip fixing device according to claim 8, characterized in that: The distance between two adjacent ratchet plates is greater than the distance between two adjacent teeth on the tooth plate, and a return spring is provided between the ratchet plate and the adjustment block.

10. The external locking frame heating strip fixing device according to claim 8, characterized in that: A joystick is provided on the front side of the adjustment block for sliding left and right. Guide grooves for sliding corresponding joysticks are provided on the horizontal sections of the left and right arms. The part of the guide groove close to the center of the beam plate is a vertical structure, and the part of the guide groove away from the center of the beam plate is an inclined structure.

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