Self-locking type locking hook head protective cover

Abstract

The utility model belongs to the technical field of locking hook head protection, and relates to a self-locking type locking hook head protective cover which comprises an upper cover body and a lower cover body, the upper cover body and the lower cover body are horizontally connected in a sliding mode, a self-locking mechanism is arranged in the buckled end of the upper cover body and the lower cover body, the self-locking mechanism comprises a locking cylinder, an elastic piece is embedded in one end in the locking cylinder, and the elastic piece is connected with the locking cylinder in a sliding mode. A spring bolt column which telescopically moves in the axial direction of the locking cylinder is embedded in the other end in the locking cylinder, one end of the spring bolt column abuts against the end of the elastic piece, a shifting piece which extends out of the locking cylinder and moves in the axial direction of the locking cylinder is arranged in the radial direction of the spring bolt column, and meanwhile the shifting piece extends out of the protective cover. And the other end of the spring bolt column is provided with a sliding piece which slides into the protective cover along the end part of the protective cover. According to the self-locking mechanism, the problem that the upper cover body is easy to slide under the action of external force is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of locking hook head protection, and in particular relates to a self-locking locking hook head protection cover. Background Art

[0002] The locking hook head protective cover is a protective device used to realize the action of the track-changing action rod in the base rail and the point rail of the track. The locking hook head protective cover is generally composed of an upper cover body and a lower cover body. The lock hook is placed in the lower cover body. The upper cover body and the lower cover body are connected by a mutually nested L-shaped slideway sliding connection to achieve buckling. An automatic oiling device is installed in the upper cover body to automatically oil the lock hook. A window is set at the upper end of the upper cover body to observe whether the lock hook is in good working condition.

[0003] When the lock hook needs to be replaced or repaired, it is generally necessary to pull the upper cover horizontally to separate it from the lower cover. However, this sliding structure is prone to cause the upper cover to slide off along the lower cover when it is not necessary to pull the upper cover, such as when opening a window. Since the locking hook head protective cover is generally located at the intersection of the rails, the sliding of the upper cover is prone to cause safety accidents. Utility Model Content

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide a self-locking locking hook head protective cover, which realizes the push-pull automatic locking of the upper cover body and the lower cover body by arranging an elastic self-locking mechanism in the end of the protective cover, thereby effectively preventing the problem of easy sliding of the upper cover body.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A self-locking locking hook head protective cover, comprising an upper cover body and a lower cover body, wherein the upper cover body and the lower cover body are horizontally slidably connected, and characterized in that a self-locking mechanism is arranged inside one end where the upper cover body and the lower cover body are buckled, and the self-locking mechanism comprises a locking cylinder, an elastic member is nested at one end of the locking cylinder, and a lock tongue column which is telescopically movable along the axial direction of the locking cylinder is nested at the other end of the locking cylinder, one end of the lock tongue column abuts against the end of the elastic member, a paddle extending out of the locking cylinder and moving along the axial direction of the locking cylinder is radially arranged on the lock tongue column, and the paddle simultaneously extends out of the protective cover, and a sliding member which slides along the end of the protective cover and enters the protective cover is arranged at the other end of the lock tongue column.

[0007] Furthermore, the locking cylinder is arranged on the inner wall of the front end portion of the upper cover body, the bottom of the locking cylinder is closed, and the elastic member is nested at one end of the bottom of the locking cylinder. A first sliding groove is provided on the wall of the upper cover body opposite to the locking cylinder, and a second sliding groove is provided on the locking cylinder that is relatively connected to the first sliding groove, and the paddle extends out of the second sliding groove and the first sliding groove, and a slot hole for the sliding member to enter is provided on the upper front end of the lower cover body.

[0008] Furthermore, the locking cylinder is arranged on the inner wall of the front end portion of the lower cover body, the bottom of the locking cylinder is closed, and the elastic member is nested at one end of the bottom of the locking cylinder. A first sliding groove is provided on the wall of the lower cover body opposite to the locking cylinder, and a second sliding groove is provided on the locking cylinder that is relatively connected to the first sliding groove, and the paddle extends out of the second sliding groove and the first sliding groove, and a slot hole for the sliding member to enter is provided on the upper front end of the upper cover body.

[0009] Furthermore, a first flange extending outward is provided at an upper front end of the lower cover body, and the slot is provided on the first flange and passes through the first flange.

[0010] Furthermore, a first flange extending outward is provided at a lower portion of the front end of the upper cover body, and the slot is provided on the first flange and passes through the first flange.

[0011] Furthermore, the sliding member has an inclined surface.

[0012] Furthermore, the elastic member is a spring.

[0013] Furthermore, marks for marking the locking positions of the upper cover body and the lower cover body are provided on the outer surfaces of the upper cover body and the lower cover body.

[0014] Furthermore, the upper cover body is provided with an opening with a polygonal cross section, an oil filling mark screw ring is nested in the opening, and an oil filling screw for adjusting the oil filling amount is sleeved in the oil filling mark screw ring.

[0015] Furthermore, the polygon is a hexagon.

[0016] The utility model adopts the above technical solution, which has the following advantages and effects:

[0017] The utility model provides a self-locking locking hook head protective cover, by arranging a self-locking mechanism inside the front end of the protective cover, the lock tongue column of the self-locking mechanism can be extended and retracted by an elastic member, when the upper cover body is pushed to lock with the lower cover body, the lock tongue column is squeezed and extends into the locking cylinder of the self-locking mechanism, when the upper cover body and the lower cover body are buckled, the lock tongue column extends into the lower cover body or the upper cover body on one side of the protective cover under the compression of the elastic member to prevent the upper cover body and the lower cover body from sliding horizontally and separating, when the upper cover body needs to be opened, the lock tongue column is moved out of one side of the upper cover body or the lower cover body through the lock tongue, and the upper cover body or the lower cover body is separated at this time; the utility model realizes preventing the upper cover body from sliding away from the upper cover body due to external force through the self-locking mechanism, thereby avoiding the problem that sliding easily causes safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the explosion structure of Example 1 of the utility model.

[0019] Figure 2 It is an enlarged structural schematic diagram of the self-locking mechanism of Example 1.

[0020] Figure 3 This is a schematic diagram of the lower cover structure of Example 1.

[0021] Figure 4 This is a schematic diagram of the upper cover structure of Example 1.

[0022] The accompanying drawings are marked as follows: 1-lower cover body, 2-upper cover body, 3-self-locking mechanism, 101-first flange, 102-slot hole, 103-second flange, 104-second arrow mark, 105-L-shaped slide groove, 106-notch, 201-L-shaped folded edge, 202-oil filling mark screw ring, 203-notch, 204-flange, 205-first arrow mark, 206-first slide groove, 301-second slide groove, 302-paddle, 303-locking cylinder, 304-lock tongue column, 3041-inclined slope. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings to describe the embodiments of the present invention in detail, so as to more clearly understand the purpose, characteristics and advantages of the present invention. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0024] Example 1

[0025] like Figure 1 - Figure 4The present embodiment provides a self-locking locking hook head protective cover, comprising an upper cover body 2 and a lower cover body 1, wherein the upper cover body 2 and the lower cover body 1 are horizontally slidably connected, and a self-locking mechanism 3 is arranged inside the front end of the upper cover body 2 and the lower cover body 1, and the self-locking mechanism 3 comprises a locking cylinder 303, wherein an elastic member is embedded at one end of the locking cylinder 303, and a lock tongue column 304 which is telescopically movable along the axial direction of the locking cylinder 303 is embedded at the other end of the locking cylinder 303, and one end of the lock tongue column 304 is abutted against the end of the elastic member, and a paddle 302 which extends out of the locking cylinder 303 and moves along the axial direction of the locking cylinder 303 is arranged in the radial direction of the lock tongue column 304, and the paddle 302 simultaneously extends out of the protective cover, and a sliding member which slides into the protective cover along the end of the protective cover is arranged at the other end of the lock tongue column 304.

[0026] Specifically, the upper cover body 2 and the lower cover body 1 are connected by a sliding sleeve type, that is, L-shaped slide grooves 105 extending to the inner side of the lower cover body 1 are provided on both sides of the upper end of the lower cover body 1, and the upper parts of both ends of the L-shaped slide grooves 105 are provided with second flanges 103 extending to the outer side of the lower cover body 1. L-shaped folding edges 201 extending to the inner side of the upper cover body 2 are provided on both sides of the lower end of the upper cover body 2, and the L-shaped slide grooves 105 are movably connected with the L-shaped folding edges 201 in an upper and lower sliding sleeve type. A notch 203 is provided at one end of the L-shaped folding edge 201 to disengage the second flange 103 at one end, and a flange 204 extending upward to resist the second flange 103 at the other end is provided at the upper part of the other end of the L-shaped folding edge 201. The L-shaped slide groove 105 can support the L-shaped folded edge 201. When the upper cover body 2 and the lower cover body 1 are connected in a sliding sleeve manner, the second flange 103 at the closed end of the long end of the lower cover body 1 abuts against the upper part of the L-shaped folded edge 201 at the closed end of the upper cover body 2 to prevent the upper cover body 2 from moving up. A notch 106 is provided on the inner side of the second flange 103 at the open end of the long end of the lower cover body 1, and the notch 106 abuts against the rear side of the flange 204 at the closed end of the upper cover body 2 to prevent the upper cover body 2 from moving backward.

[0027] When the upper cover body 2 and the lower cover body 1 are separated, the paddle 302 of the self-locking mechanism 3 is moved first, and the paddle 302 drives the lock tongue column 304 to compress the elastic part and extend into the locking cylinder 303. At this time, by moving the upper cover body 2 toward the open end of the protective cover, the L-shaped folded edge 201 at the closed end of the upper cover body 2 is moved to the notch 203 position, and the upper cover body 2 is pulled up to completely separate the two.

[0028] When the upper cover body 2 and the lower cover body 1 need to be buckled together, the upper cover body 2 is pushed so that the sliding part at the lower end of the lock tongue column 304 will move along the buckling surface of the protective cover to the inside of the protective cover, and the elastic part will pop out the lock tongue column 304 so that the lock tongue column 304 is blocked on the inner wall of the protective cover.

[0029] Furthermore, the self-locking mechanism 3 is arranged on the front end inner wall of the upper cover body 2. At this time, the locking cylinder 303 is arranged on the front end inner wall of the upper cover body 2, the bottom of the locking cylinder 303 is closed, and an elastic member is nested at one end of the bottom of the locking cylinder 303. A first sliding groove 206 is provided on the wall of the upper cover body 2 opposite to the locking cylinder 303, and a second sliding groove 301 is provided on the locking cylinder 303 and is relatively connected to the first sliding groove 206. The paddle 302 extends out of the second sliding groove 301 and the first sliding groove 206, and a slot 102 for the sliding member to enter is provided on the upper front end of the lower cover body 1.

[0030] Specifically, the outside of the locking cylinder 303 is welded to the center of the inner wall in the width direction of the front end of the upper cover body 2. The structure of the locking cylinder 303 is a cylindrical body with an inner circle and an outer square. The upper end of the locking cylinder 303 is closed and the lower end is open. The lower end is flush with the lower end surface of the front end of the upper cover body 2. The elastic member is arranged at the bottom of the upper end of the locking cylinder 303. The second slide groove 301 is opened along the axial direction of the locking cylinder 303. The first slide groove 206 and the second slide groove 301 have the same size. A slot hole 102 is arranged at the center of the front end of the lower cover body 1. The size of the slot hole 102 is at least enough to accommodate the end of the lock tongue column 304. The slot hole 102 passes through the upper end of the lower cover body 1. The upper end of the lock tongue column 304 is fixedly connected to the lower end of the elastic member. The lock tongue column 304 is supported in the locking cylinder 303 by the paddle 302. The lock tongue column 304 is telescopically moved up and down by the elastic member.

[0031] Furthermore, a through hole is provided on the end of the paddle 302 extending out of the upper cover body 2 , and the self-locking mechanism 3 can be pulled through the through hole to facilitate the movement of the upper cover body 2 .

[0032] Furthermore, the lower end of the sliding member has an inclined surface 3041. The sliding member is an extension of the lower end of the locking tongue column 304, and is integrally provided with the locking tongue column 304. The direction of the inclined surface 3041 toward the rear end of the upper cover body 2 or the lower cover body 1 is higher than the direction of the front end of the upper cover body 2 or the lower cover body 1, so that the inclined surface 3041 can only enter the protective cover.

[0033] Furthermore, in order to prevent the upper cover body 2 from moving further toward the rear end after being buckled with the lower cover body 1, a first flange 101 extending outward is provided at the upper front end of the lower cover body 1, and the two ends of the first flange 101 are in contact with the side surfaces of the L-shaped slide groove 105 on both sides of the lower cover body 1, so that the length of the first flange 101 is smaller than the width of the lower cover body 1, so that the first flange 101 can internally resist the front end of the upper cover body 2 when the upper cover body 2 and the lower cover body 1 are buckled up and down.

[0034] Furthermore, the slot 102 is provided on the first flange 101 and passes through the first flange 101. The slot 102 is located at the center of the first flange 101 and passes through the front and rear end surfaces and the upper end surface of the first flange 101. The first flange 101 is formed by connecting a vertical plate and an inclined plate. At this time, the slot 102 is located on the lower cover 1, the vertical plate is welded to the upper end of the lower cover 1, and the inclined plate is welded horizontally and upwardly to the upper end of the vertical plate.

[0035] Furthermore, the elastic member is a spring, which is a compression spring. Of course, the elastic member can also be a column structure with elasticity, such as an elastic rubber column.

[0036] Furthermore, in order to facilitate identification of the locking position of the upper cover body 2 and the lower cover body 1 , marks for marking the locking position of the upper cover body 2 and the lower cover body 1 are provided on the outer surfaces of the upper cover body 2 and the lower cover body 1 .

[0037] Specifically, the mark includes a first arrow mark 205 set on the outer periphery of the upper cover body 2 and a pair of spaced second arrow marks 104 set on the outer periphery of the lower cover body 1, the arrow of the first arrow mark 205 points downward, and the arrow of the second arrow mark 104 points upward. The pair of spaced second arrow marks 104 consists of a locking position arrow and an alignment position arrow, and the distance between the locking position arrow and the alignment position arrow is equal to the distance that the upper cover body 2 and the lower cover body 1 can just snap together and open and separate and slide. When the first arrow mark 205 and the locking position arrow are aligned, the upper cover body 2 and the lower cover body 1 slide and snap together as a whole, and when the first arrow mark 205 and the alignment position arrow are aligned, the upper cover body 2 and the lower cover body 1 can be opened and separated.

[0038] Furthermore, in order to prevent the automatic oiler in the protective cover from rotating, an opening with a polygonal cross section is provided on the upper cover body 2, and an oiling mark screw ring 202 is nested in the polygonal opening, and an oiling screw for adjusting the oiling amount is sleeved in the oiling mark screw ring 202. By providing the polygonal opening, the oiling mark screw ring 202 of the automatic oiler can cooperate with the opening to prevent rotation. The polygonal opening is preferably a hexagonal opening.

[0039] When the self-locking locking hook head protective cover provided in this embodiment is in use, the rear end of the upper cover body 2 is placed on the front end of the lower cover body 1, and then the lower cover body 1 is pushed along the upper cover body 2, and the lower end of the lock tongue column 304 of the self-locking mechanism 3 enters the lower cover body 1 along the opening of the lower cover body 1 at the same time. Since the inclined slope 3041 at the lower end of the lock tongue column 304 can slide along the slot 102 into the lower cover body 1, the edge of the lower cover body 1 can support the lock tongue column 304 to compress the spring. When the lock tongue column 304 enters the lower cover body 1, the first arrow mark 205 and the locking position arrow are aligned, and the upper cover body 2 and the lower cover body 1 are locked. Under the compression of the spring, the lock tongue column 304 extends into the lower cover body 1 to prevent the upper cover body 2 and the lower cover body 1 from sliding along the length direction of the protective cover. At the same time, the cooperation of the L-shaped slide groove 105 and the L-shaped folded edge 201 can prevent the upper cover body 2 and the lower cover body 1 from moving in the width direction of the protective cover.

[0040] When it is necessary to open the upper cover body 2, the paddle 302 outside the protective cover is lifted up, the lock tongue column 304 compresses the spring upward and enters the locking cylinder 303, and at the same time, the upper cover body 2 is pulled outward, and the self-locking mechanism 3 of the upper cover body 2 moves to the outside of the lower cover body 1. When the first arrow mark 205 and the alignment arrow are aligned, the locking position of the upper cover body 2 and the lower cover body 1 fails, and the upper cover body 2 can be removed to maintain the internal lock hook.

[0041] Example 2

[0042] The difference from Example 1 is that the self-locking mechanism 3 of Example 2 is arranged at the center position of the inner wall in the width direction of the front end portion of the lower cover body 1, and the locking cylinder 303 is arranged on the inner wall of the front end portion of the upper cover body 2, the bottom of the lower end of the locking cylinder 303 is closed, and an elastic member is nested at one end of the bottom of the locking cylinder 303, and a first sliding groove 206 is provided on the wall of the upper cover body 2 opposite to the locking cylinder 303, and a second sliding groove 301 that is relatively connected to the first sliding groove 206 is provided on the locking cylinder 303, and the paddle 302 extends from the second sliding groove 301 and the first sliding groove 206, and a slot 102 for the sliding member to enter is provided at the upper front end of the lower cover body 1.

[0043] When the slot hole 102 is located on the upper cover body 2, the vertical plate is welded to the lower end of the upper cover body 2, and the inclined plate is welded to the lower end of the vertical plate in a horizontal downward tilt.

[0044] The sliding member is a ball bearing slidably connected to the bottom of the lock tongue column 304, and one end of the ball bearing is slightly higher than the end of the lower cover body 1 so as to slide into the protective cover. One end of the ball bearing can be slidably nested in the bottom of the lock tongue column 304.

[0045] Of course, as a preference, the sliding member can also be a roller hinged at the bottom of the lock tongue column. In this case, the bottom of the lock tongue column has relative protrusions, and a pair of protrusions are slidably connected to the two ends of the roller, and the axial direction of the roller is parallel to the end face of the protective cover.

[0046] In this embodiment, since the self-locking mechanism 3 is arranged inside the front end of the lower cover body 1, a pull ring can be set at the front end of the upper cover body 2, and the upper cover body 2 can be moved by the pull ring. At this time, no through hole is required on the paddle of the self-locking mechanism 3.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A self-locking locking hook head protective cover, characterized in that: The utility model comprises an upper cover body (2) and a lower cover body (1), wherein the upper cover body (2) and the lower cover body (1) are horizontally slidably connected, and is characterized in that a self-locking mechanism (3) is arranged inside one end where the upper cover body (2) and the lower cover body (1) are buckled, and the self-locking mechanism (3) comprises a locking cylinder (303), one end of the locking cylinder (303) is embedded with an elastic member, and the other end of the locking cylinder (303) is embedded with a lock tongue column (304) which is telescopically movable along the axial direction of the locking cylinder (303), one end of the lock tongue column (304) is abutted against the end of the elastic member, and a paddle (302) is arranged radially on the lock tongue column (304) which extends out of the locking cylinder (303) and moves axially along the locking cylinder (303), and the paddle (302) simultaneously extends out of the protective cover, and the other end of the lock tongue column (304) is arranged with a sliding member which slides along the end of the protective cover and enters the protective cover.

2. A self-locking locking hook head protective cover according to claim 1, characterized in that: The locking cylinder (303) is arranged on the inner wall of the front end of the upper cover body (2), the bottom of the locking cylinder (303) is closed, and the elastic member is nested at one end of the bottom of the locking cylinder (303). A first sliding groove (206) is provided on the wall of the upper cover body (2) opposite to the locking cylinder (303), and a second sliding groove that is relatively connected to the first sliding groove (206) is provided on the locking cylinder (303). The paddle (302) extends out of the second sliding groove and the first sliding groove (206), and a slot hole (102) for the sliding member to enter is provided on the upper front end of the lower cover body (1).

3. The self-locking locking hook head protective cover according to claim 1, characterized in that: The locking cylinder (303) is arranged on the front end inner wall of the lower cover body (1), the bottom of the locking cylinder (303) is closed, and the elastic member is nested at one end of the bottom of the locking cylinder (303). A first sliding groove (206) is provided on the wall of the lower cover body (1) opposite to the locking cylinder (303), and a second sliding groove that is relatively connected to the first sliding groove (206) is provided on the locking cylinder (303). The paddle (302) extends out of the second sliding groove and the first sliding groove (206), and a slot hole (102) for the sliding member to enter is provided on the upper front end of the upper cover body (2).

4. A self-locking locking hook head protective cover according to claim 2, characterized in that: A first flange (101) extending outward is provided at the upper front end of the lower cover body (1), and the slot (102) is opened on the first flange (101) and passes through the first flange (101).

5. The self-locking locking hook head protective cover according to claim 3, characterized in that: A first flange (101) extending outward is provided at the lower front end of the upper cover body (2), and the slot (102) is opened on the first flange (101) and passes through the first flange (101).

6. A self-locking locking hook head protective cover according to claim 1, 2 or 3, characterized in that: The sliding member has an inclined slope (3041).

7. The self-locking locking hook head protective cover according to claim 1, characterized in that: The elastic member is a spring.

8. The self-locking locking hook head protective cover according to claim 6, characterized in that: Marks for marking the locking positions of the upper cover body (2) and the lower cover body (1) are provided on the outer surfaces of the upper cover body (2) and the lower cover body (1).

9. The self-locking locking hook head protective cover according to claim 1, characterized in that: The upper cover body (2) is provided with an opening with a polygonal cross section, an oil filling mark screw ring (202) is nested in the opening, and an oil filling screw for adjusting the oil filling amount is sleeved in the oil filling mark screw ring (202).

10. The self-locking locking hook head protective cover according to claim 9, characterized in that: The polygon is a hexagon.

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