Locking structure of height-limited portal frame of dike

Abstract

The invention provides a locking structure of a levee height-limiting portal frame; the structure comprises a lock box, a lock tongue and a lock rod; the lock box is fixedly connected in a crossbeam of the levee height-limiting portal frame; a movable slideway for the lock tongue to reciprocate is arranged in the lock box; the lock tongue cooperates with the lock box; a lock groove cooperating with the lock tongue is arranged on a column of the levee height-limiting portal frame; a lock hole is arranged on an end face of the lock tongue away from the column; a lock pin is arranged on an inner wall of the lock hole; a lock hole for the lock rod to enter is arranged at the bottom of the lock box; the lock rod comprises a tube body, a flexible shaft and a lock head; the outer contour of the lock head matches the locking hole of the lock tongue; the outer wall of the lock head has a traction groove; the lock head is installed at the beginning end of the tube body; the lock head is fixedly connected to the beginning end of the flexible shaft; the flexible shaft is sleeved in the tube body; a bend is arranged in the middle of the tube body. The locking structure of the levee height limit gantry can be opened to separate the crossbeam and the column of the levee height limit gantry, allowing large emergency rescue vehicles to pass on the road on the top of the levee. The main structural strength of the locking structure of the levee height limit gantry is also specially strengthened.

Description

Technical Field

[0001] The invention relates to a locking structure of a dike height-limiting door frame. Background Art

[0002] The main purpose of the levee height limit gantry is to restrict overweight and overheight vehicles from driving on the levee top road and damaging the levee and road surface. In emergency situations or flood prevention and rescue, the levee height limit gantry should be able to open to allow large rescue vehicles to pass on the levee top road, but the existing levee height limit gantry does not have such a structure, and lacks a locking structure that can prevent the levee height limit gantry from opening at will. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a locking structure of a dike height limiting gantry which has a reasonable structure and can flexibly adjust the opening and closing of the dike height limiting gantry according to usage conditions.

[0004] In order to solve the above technical problems, the present invention provides a locking structure for a levee height-limiting portal frame;

[0005] It includes a lock box, a lock tongue and a lock rod. The lock box is fixedly connected to the crossbeam of the levee height limit portal frame. A movable slideway for the lock tongue to reciprocate is arranged in the lock box. The lock tongue cooperates with the lock box. A lock groove cooperating with the lock tongue is opened at a position of the column corresponding to the lock box of the levee height limit portal frame. The height of the lock groove is higher than the height of the lock tongue. A locking hole is opened on the end face of the lock tongue away from the column. The axial direction of the locking hole is consistent with the direction of the movable slideway. At least one locking pin is arranged on the inner wall of the locking hole.

[0006] A lock hole for the locking rod to enter is provided at the bottom of the lock box, and the length direction of the lock hole is consistent with the length direction of the movable slideway. The lock rod includes a tube body, a flexible shaft and a lock head. The outer contour of the lock head matches the locking hole of the lock tongue. The lock head has an outer wall with at least one traction groove, and the traction groove corresponds to the locking pin one by one. The traction groove includes a first-stage groove and a second-stage groove. The starting end of the first-stage groove extends to the end face of the lock head, and the direction of the first-stage groove is consistent with the axial direction of the lock head. The end of the first-stage groove is connected to the starting end of the second-stage groove, and the direction of the second-stage groove is consistent with the circumferential direction of the lock head. The lock head is installed at the starting end of the tube body, and the lock head can rotate circumferentially relative to the tube body. The lock head is fixedly connected to the starting end of the flexible shaft, the flexible shaft is sleeved in the tube body, and a bend is provided in the middle of the tube body.

[0007] The embankment height limit gantry adopting the locking structure of the embankment height limit gantry can restrict overweight and overheight private vehicles from driving on the embankment top road and damaging the embankment and road surface. However, during emergency situations or flood prevention and rescue operations, the locking structure of the embankment height limit gantry can be opened to separate the crossbeams and columns of the embankment height limit gantry, allowing large emergency rescue vehicles to pass on the embankment top road. The main structural strength of the locking structure of the embankment height limit gantry is also specially strengthened.

[0008] In addition, the locking structure of this dike height limit gantry is an open structure. The special locking rod and lock tongue cooperate. After locking, it cannot be opened without special tools. In actual operation, it can also prevent deliberate human damage and arbitrary opening by other personnel.

[0009] In order to more clearly understand the technical content of the present invention, the locking structure of the dike height limiting portal frame is referred to as the locking structure below.

[0010] The end of the flexible shaft of the locking structure is fixedly connected to the rotating handle, and the rotating handle is located at the end of the tube body; after adopting such a structure, operating the rotating handle drives the flexible shaft and the lock head to rotate, which is convenient for daily unlocking operations.

[0011] A support rod is fixedly connected to the side wall of the tube body near the end of the locking structure. After adopting such a structure, if the resistance to the movement of the lock tongue is large, the support rod can assist the lock rod in driving the lock tongue to move, so that the operation of pushing and pulling the lock rod with both hands can be labor-saving.

[0012] A plurality of locking pins extend from the inner wall of the locking hole of the locking structure, and the plurality of locking pins are distributed non-uniformly along the axis of the locking hole;

[0013] The lock head is provided with a plurality of traction grooves on its outer wall, and the traction grooves correspond to the locking pins one by one.

[0014] After adopting such a structure, the traction groove position of the lock head is adjusted according to the different central angles of the locking pin, so that a lock tongue can be matched with a lock rod, avoiding the problem of other people opening the dike height limit door frame at will due to the universal lock rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall schematic diagram of the dike height limiting portal frame of the locking structure embodiment.

[0016] Figure 2 2 is a diagram showing the use status of the locking structure embodiment.

[0017] Figure 3 It is a right side view of the lock tongue of the locking structure embodiment.

[0018] Figure 4 It is a bottom view of the lock box of the locking structure embodiment.

[0019] Figure 5 It is a front view of the locking rod of the locking structure embodiment.

[0020] Figure 6 It is a front view of the lock head of the locking structure embodiment. DETAILED DESCRIPTION

[0021] like Figures 1 to 6 Shown

[0022] This locking structure is arranged on a separated embankment height limit portal frame. The separated embankment height limit portal frame is characterized in that the cross beam 3 and the two side columns 2 are separable structures, and the two ends of the cross beam 3 are detachably connected to the two side columns 2 through this locking structure.

[0023] The locking structure includes a lock box 11 , a lock tongue 12 and a lock rod 13 .

[0024] The lock box 11 is welded in the crossbeam 3 of the levee height limit portal frame. The lock box 11 is located close to the column 2 of the levee height limit portal frame. The inner cavity of the lock box 11 constitutes a movable slide 11a for the lock tongue 12 to reciprocate. The cross-sectional shape of the movable slide 11a is consistent with the cross-sectional shape of the lock tongue 12. The movable slide 11a extends to the side wall of the crossbeam 3 of the levee height limit portal frame close to the column 2. The length of the movable slide 11a is longer than the length of the lock tongue 12. The lock tongue 12 cooperates with the lock box 11. A lock hole 11b for the lock rod 13 to enter is opened at the bottom of the lock box 11. The length direction of the lock hole 11b is consistent with the length direction of the movable slide 11a.

[0025] A locking box 21 is embedded in the position of the lock box 11 on the column 2 of the levee height limit portal frame. The locking box 21 is installed inside the column 2 and is used to limit the height of the beam 3. The locking box 21 is made of 20mm thick 45# steel plate. A lock groove 21a that cooperates with the lock tongue 12 is formed in the locking box 21. The height of the lock groove 21a is higher than the height of the lock tongue 12. The locking box 21 is subjected to the shear force transmitted by the locking pin 12a2 under abnormal circumstances. The locking pin 12a2 is pushed out and inserted into the locking box 21. The beam 3 is in a locked state and can only be lifted upward 200mm to facilitate the unlocking operation.

[0026] The locking tongue 12 is provided with a locking block 12a extending away from the column 2, and a locking hole 12a1 is formed on the end face of the locking block 12a. The axial direction of the locking hole 12a1 is consistent with the direction of the movable slide 11a. Two locking pins 12a2 are provided on the locking block 12a, and the two locking pins 12a2 penetrate the side wall of the locking block 12a along the radial direction of the locking hole 12a1 and extend into the locking hole 12a1. The central angle corresponding to the two locking pins 12a2 is 60° (in actual use, according to the different central angles of the locking pins 12a2, the locking structure is provided with a total of multiple types of locking rods 13, and the same type of locking pins 12a2 are universal for operating the locking rods 13, and each embankment management office has one type), that is, the locking pins 12a2 are unevenly distributed along the axis of the locking hole 12a1.

[0027] The lock rod 13 includes a tube body 13c, a flexible shaft 13e and a lock head 13a. The outer contour of the lock head 13a matches the locking hole 12a1 of the lock tongue 12. The lock head 13a has two L-shaped traction grooves 13b on its outer wall. The two traction grooves 13b correspond to the two locking pins 12a2 one by one. The traction grooves 13b cooperate with the corresponding locking pins 12a2. Each traction groove 13b includes a first-stage groove 13b1 and a second-stage groove 13b2. The first-stage groove 13b1 starts and extends to the end surface of the lock head 13a. The direction of the first-stage groove 13b1 is consistent with the axial direction of the lock head 13a. The end of the first-stage groove 13b1 is connected to the beginning of the second-stage groove 13b2. The direction of the second-stage groove 13b2 is consistent with the circumferential direction of the lock head 13a. The lock head 13a is installed at the beginning of the tube body 13c. The lock head 13a can rotate circumferentially relative to the tube body 13c. The lock head 13a is fixedly connected to the beginning of the flexible shaft 13e. The flexible shaft 13e is sleeved in the tube body 13c. A bend is provided in the middle of the tube body 13c. The end of the flexible shaft 13e is fixed to the rotating handle 13d. The rotating handle 13d is at the end of the tube body 13c. A support rod 13f is welded on the side wall of the tube body 13c near the end.

[0028] When in use, when the height-limiting portal frame of the dike is in a locked state, the cross beam 3 of the height-limiting portal frame of the dike is lifted horizontally by 150 mm using a lifting device (a crane or a jack), and the locking tongue 12 is also moved upward by 150 mm, and the end of the locking tongue 12 is still in the locking groove 21 a. The locking holes 11 b at the bottom of both ends of the lifted cross beam 3 are exposed, and 150 mm high safety protection blocks are placed at both ends. The lock head 13 a of the locking rod 13 is inserted from the lock hole 11 b into the locking hole 12 a1 of the locking block 12 a. During the insertion process, a feel of When blocking, gently push forward while slowly turning the rotating handle 13d at the rear of the locking rod 13. When the circumferential angle of the traction groove 13b is aligned with the axial angle of the locking pin 12a2, the locking rod 13 can move forward a little further until the locking pin 12a2 moves to the end of the first-stage groove 13b1. Turn the rotating handle 13d again to make the locking pin 12a2 enter the second-stage groove 13b2. The locking pin 12a2 can get stuck in the lock head 13a, and the locking rod 13 can be pulled to move the lock tongue 12 to the unlocking position.

[0029] On the contrary, the lock rod 13 can be withdrawn from the lock tongue 12. If the movement resistance of the lock tongue 12 is large, the support rod 13f on the lock rod 13 can be assisted to realize the operation of pushing and pulling the lock rod 13 with both hands, which can save effort.

[0030] During maintenance, it is recommended to perform maintenance on the locking structure once before the flood season every year. During maintenance, the crossbeam 3 needs to be removed, the lock tongue 12 needs to be taken out, the lock box 21, the inner surface of the lock box 11 and the outer surface of the lock pin 12a2 need to be cleaned and greased for corrosion prevention, and the inside of the lock hole 12a1 should also be cleaned and lubricated.

[0031] The above is only one embodiment of the present invention. It should be pointed out that a person skilled in the art may make several modifications and improvements without departing from the principle of the present invention, and these should also be regarded as falling within the scope of protection of the present invention.

Claims

1. A locking structure for a height-limiting portal frame of a dike, characterized by: It includes a lock box, a lock tongue and a lock rod. The lock box is fixedly connected to the crossbeam of the levee height limit portal frame. A movable slideway for the lock tongue to reciprocate is arranged in the lock box. The lock tongue cooperates with the lock box. A lock groove cooperating with the lock tongue is opened at a position of the column corresponding to the lock box of the levee height limit portal frame. The height of the lock groove is higher than the height of the lock tongue. A locking hole is opened on the end face of the lock tongue away from the column. The axial direction of the locking hole is consistent with the direction of the movable slideway. At least one locking pin is arranged on the inner wall of the locking hole. A lock hole for the locking rod to enter is provided at the bottom of the lock box, and the length direction of the lock hole is consistent with the length direction of the movable slideway. The lock rod includes a tube body, a flexible shaft and a lock head. The outer contour of the lock head matches the locking hole of the lock tongue. The lock head has an outer wall with at least one traction groove, and the traction groove corresponds to the locking pin one by one. The traction groove includes a first-stage groove and a second-stage groove. The starting end of the first-stage groove extends to the end face of the lock head, and the direction of the first-stage groove is consistent with the axial direction of the lock head. The end of the first-stage groove is connected to the starting end of the second-stage groove, and the direction of the second-stage groove is consistent with the circumferential direction of the lock head. The lock head is installed at the starting end of the tube body, and the lock head can rotate circumferentially relative to the tube body. The lock head is fixedly connected to the starting end of the flexible shaft, the flexible shaft is sleeved in the tube body, and a bend is provided in the middle of the tube body.

2. The locking structure of the dike height limiting portal frame according to claim 1 is characterized in that: The end of the flexible shaft is fixedly connected to a rotating handle, and the rotating handle is located at the end of the tube body.

3. The locking structure of the dike height limiting portal frame according to claim 1 is characterized in that: A support rod is fixedly connected to the side wall of the tube body near the end position.

4. The locking structure of the dike height limiting portal frame according to claim 1 is characterized in that: A plurality of locking pins extend from the inner wall of the locking hole, and the plurality of locking pins are distributed non-uniformly along the axis of the locking hole; The lock head is provided with a plurality of traction grooves on its outer wall, and the traction grooves correspond to the locking pins one by one.

Images