Safety rope hook convenient to open and close for safety belt

Abstract

The utility model provides a safety rope hook convenient to open and close for a safety belt, and relates to the technical field of safety hooks, the safety rope hook comprises a hook body, the hook body comprises a hook body, a connecting arm fixed to one end of the hook body, a shaft pin rotationally connected to the connecting arm, a locking arm fixedly connected with the shaft pin and an elastic piece used for driving the locking arm to rotate and abut against the hook body, the connecting arm is hollow, the shaft pin penetrates through the connecting arm in the radial direction of the connecting arm, and the middle of the shaft pin is located in a cavity of the connecting arm. The handheld part is fixedly installed at one end of the connecting arm, the handheld part is of a hollow rod-shaped structure, a rotating rod is arranged in the handheld part, one end of the rotating rod extends into the cavity of the connecting arm and is fixedly connected with the shaft pin, and a pushing piece used for pushing the rotating rod to rotate is arranged on the handheld part; when the rotating rod rotates, the locking arm can be driven to rotate through the shaft pin, and therefore opening and closing of the hook body are achieved. The safety rope hook has the effect of quickly and conveniently hooking the safety rope hook on the hanging point.

Description

Technical Field

[0001] The present application relates to the technical field of safety hooks, and in particular to a safety rope hook for a safety belt that is easy to open and close. Background Art

[0002] The five-point safety belt of an industrial enterprise is equipped with a pair of safety ropes on the shoulder straps, and the ends of the safety ropes are connected to safety hooks. The function of the safety hooks is to hang the safety hooks on different hanging points when the workers are working on site to prevent the workers from falling.

[0003] When workers wear safety belts and climb scaffolds, they hang the safety hook while climbing up. In the process of hooking the safety hook on the hanging point, they need to press the locking arm on the safety hook to make the locking arm rotate around the hook body until the safety hook is opened, so that the safety hook and the hanging point are hooked. Considering that the reset spring configured on some safety hooks has a large elastic force, it is more laborious to press the locking arm on the safety hook. Utility Model Content

[0004] In order to improve the problem that it is laborious to press the locking arm on the safety hook, the present application provides a safety rope hook for a safety belt that is easy to open and close.

[0005] The present application provides a safety rope hook for a safety belt that is easy to open and close, which adopts the following technical solution:

[0006] A safety rope hook for a safety belt that is easy to open and close, comprising

[0007] A hook body, the hook body comprising a hook body, a connecting arm fixed on one end of the hook body, an axle pin rotatably connected to the connecting arm, a locking arm fixedly connected to the axle pin, and an elastic member used to drive the locking arm to rotate and press against the hook body, under the drive of the elastic member, the hook body, the connecting arm and the locking arm can form a closed annular structure, the connecting arm is hollow, the axle pin is radially arranged through the connecting arm, and the middle of the axle pin is located in the cavity of the connecting arm;

[0008] The hand-held part is fixedly mounted on one end of the connecting arm, and the hand-held part is configured as a hollow rod-shaped structure. A rotating rod is arranged inside the hand-held part, and one end of the rotating rod extends into the cavity of the connecting arm and is fixedly connected to the axle pin. A pushing member for pushing the rotating rod to rotate is arranged on the hand-held part, so that when the rotating rod rotates, the locking arm can be driven to rotate through the axle pin, thereby realizing the opening and closing of the hook body.

[0009] Furthermore, the pushing member is configured as a push rod, which moves radially along the hand-held portion and penetrates the side wall of the hand-held portion, with one end located outside the hand-held portion and the other end located in the cavity of the hand-held portion. By pressing the push rod into the hand-held portion, the push rod can push the rotating rod to rotate, and a return spring is provided on the push rod to drive the push rod to move away from the rotating rod.

[0010] Furthermore, both ends of the push rod are sleeved with limit blocks.

[0011] Furthermore, the hand-held part includes a connecting tube fixedly connected to the connecting arm and a sleeve slidably mounted on the connecting tube, the sleeve is provided with a locking member for locking the position of the connecting tube and the sleeve, the rotating rod is configured as a telescopic rod-like structure, and an articulated seat is provided at one end of the rotating rod away from the axle pin, and the articulated seat is slidably connected to the inner wall of one end of the sleeve away from the connecting arm.

[0012] Furthermore, threaded holes are formed through the side walls at both ends of the sleeve, the locking member is configured as a locking screw threaded through the threaded hole, and a socket for inserting the locking screw is formed on the side wall of the connecting tube away from the end of the connecting arm.

[0013] Furthermore, an anti-dropping block is arranged at one end of the connecting tube away from the connecting arm, and the anti-dropping block always slides in the sleeve.

[0014] Furthermore, the rotating rod includes a rod body and a sliding cylinder slidably sleeved on the rod body, one end of the rod body away from the sliding cylinder is fixedly connected to the axle pin, and one end of the sliding cylinder away from the rod body is hingedly connected to the inner wall of one end of the sleeve by sliding.

[0015] Furthermore, when the anti-dropping block abuts against one end of the sleeve close to the connecting arm, the end of the rod body is still located in the sliding cylinder.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. The rotating rod is pushed to rotate by the pushing member, so that the rotating rod drives the locking arm to rotate through the shaft pin, so that the hook body can be opened conveniently and labor-savingly, and the hook body can be quickly hung on the hanging point;

[0018] 2. The handle is configured as a rod-shaped structure with adjustable length, so that the handle can be adjusted to the longest state according to the height of the hanging point, thereby facilitating the quick hanging of the hook body on the hanging point. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic cross-sectional structural diagram of the connecting arm, connecting cylinder, sleeve, rod body and sliding cylinder in the embodiment of the present application.

[0021] Figure 2 It is a schematic diagram of the structure of the connecting arm, the axle pin, the elastic member, the rod body and the slide cylinder in the embodiment of the present application.

[0022] Figure 3 yes Figure 1 Enlarged schematic diagram of part A.

[0023] Figure numerals: 1, hook body; 2, connecting arm; 3, axle pin; 4, locking arm; 5, elastic member; 6, push rod; 7, return spring; 8, limit block; 9, connecting cylinder; 10, sleeve; 11, hinge seat; 12, locking screw; 13, anti-slip block; 14, rod body; 15, slide cylinder. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The embodiment of the present application discloses a safety rope hook for a safety belt that is easy to open and close. Figure 1 , Figure 2 and Figure 3A safety rope hook for a safety belt that is easy to open and close includes a hook body and a hand-held part arranged on the hook body; wherein the hook body includes a hook body 1, a connecting arm 2, a locking arm 4, an axle pin 3 and an elastic member 5, wherein the connecting arm 2 and the locking arm 4 are both located at the opening of the hook body 1, the connecting arm 2 is hollow, and one end of the connecting arm 2 is fixedly connected to one end of the hook body 1; the axle pin 3 is radially arranged through the connecting arm 2, and the two ends of the axle pin 3 extend to the two sides of the connecting arm 2 respectively, the middle part of the axle pin 3 is located in the cavity of the connecting arm 2, and the axle pin 3 can rotate freely on the connecting arm 2. An embedding groove is provided at one end of the locking arm 4, the embedding groove of the locking arm 4 is buckled on the connecting arm 2, the axle pin 3 is located in the embedding groove of the locking arm 4, and the two ends of the axle pin 3 are respectively embedded in the inner walls on both sides of the groove and fixedly connected, so that the locking arm 4 is rotatably connected to the connecting arm 2 through the axle pin 3. The elastic member 5 is configured as a torsion spring, which is sleeved on the axle pin 3, and one end of the torsion spring is fixedly connected to the connecting arm 2, and the other end is fixedly connected to the locking arm 4; so that under the drive of the torsion spring, the locking arm 4 rotates around the connecting arm 2 and is buckled and tightly pressed against the hook body 1, so that the hook body 1, the connecting arm 2 and the locking arm 4 can form a closed ring structure.

[0026] Reference Figure 1 , Figure 2 and Figure 3 The handheld part is fixedly mounted on one end of the connecting arm 2, and the handheld part is located outside the hook body 1. The handheld part is configured as a hollow rod-shaped structure, and the cavity of the handheld part is connected to the cavity of the connecting arm 2. A rotating rod is provided in the handheld part, one end of which extends into the cavity of the connecting arm 2 and is fixedly connected to the shaft pin 3 located in the cavity of the connecting arm 2; and a pushing member for pushing the rotating rod to rotate in the cavity of the handheld part is movably provided on the shell of the handheld part, and the pushing member is specifically configured as a push rod 6, which is movably provided along the radial direction of the handheld part and penetrates the side wall of the handheld part, and one end of the push rod 6 is located outside the handheld part and the other end is located in the cavity of the handheld part. By pressing the push rod 6 into the handheld part, the push rod 6 can push the rotating rod to rotate. When the hook body needs to be opened, it is only necessary to push the push rod 6 toward the handheld part. The push rod 6 pushes the rotating rod to swing in the handheld part. At the same time, the rotating rod also drives the axle pin 3 to rotate on the connecting arm 2. At this time, the axle pin 3 drives the locking arm 4 to rotate synchronously, so that one end of the locking arm 4 no longer abuts against the hook body 1, ensuring that the hook body can be opened smoothly. Because the push rod 6 is located on the handheld part, and the distance from the point where the push rod 6 acts on the rotating rod to the axle pin 3 is far, according to the lever principle, the hook body can be opened with relatively little effort. When the hook body is opened and hung on the hanging point, there is no need to apply external force to the push rod 6. At this time, the torsion spring drives the locking arm 4 and the axle pin 3 to rotate synchronously, and makes the locking arm 4 buckle on the hook body 1, so that the hook body is automatically closed, and then the hook body can be safely and stably connected to the hanging point.

[0027] Considering that the hook body is automatically closed under the action of the torsion spring, the shaft pin 3 will drive the rotating rod to move toward the direction close to the push rod 6 to achieve automatic reset. In order to make the automatic reset process of the rotating rod not affected by the push rod 6, Figure 1 , Figure 2 and Figure 3 A return spring 7 is sleeved on the push rod 6 to drive the push rod 6 to move away from the rotating rod; the return spring 7 is located outside the hand-held portion, and one end of the return spring 7 is fixedly connected to the hand-held portion, and the other end is fixedly connected to the push rod 6. When the hook body is automatically closed and no external force is applied to the push rod 6, the return spring 7 drives the push rod 6 to move to one side of the rotating rod and does not press against the rotating rod, so that the locking arm 4 can be quickly and stably buckled on the hook body 1.

[0028] In order to ensure that the push rod 6 does not fall off from the handheld portion when the push rod 6 is pressed or the push rod 6 moves away from the rotating rod under the action of the return spring 7, Figure 1 , Figure 2 and Figure 3 Both ends of the push rod 6 are fixedly sleeved with limit blocks 8, and the design of the limit blocks 8 enables the push rod 6 to always be slidably connected to the shell on one side of the handheld part.

[0029] When the construction workers hang the hook on the hanging point, if there is a certain distance between the hook and the hanging point, the hook cannot be quickly hung on the hanging point. Therefore, in the present application, the hand-held part is set as a rod-shaped structure with adjustable length. Figure 1 The handheld part includes a connecting tube 9 fixedly connected to the connecting arm 2 and a sleeve 10 slidably sleeved on the connecting tube 9. By driving the sleeve 10 to slide on the connecting tube 9, the overall length of the handheld part can be adjusted. The sleeve 10 is provided with a locking member for locking the connecting tube 9 and the sleeve 10 in position. The locking member is specifically configured as a locking screw 12. The side walls at both ends of the sleeve 10 are penetrated with threaded holes for the locking screw 12 to be threaded through. The side wall of the connecting tube 9 at the end away from the connecting arm 2 is provided with a socket for the locking screw 12 to be inserted. When the handheld part needs to be extended, the sleeve 10 can be driven to move in a direction away from the connecting tube 9, and then the locking screw 12 is threaded through the threaded hole of the sleeve 10 at one end close to the hook body, and then inserted into the socket of the connecting tube 9, so that the handheld part is fixed in the longest state. When the hand-held part does not need to be extended, it is only necessary to drive the sleeve 10 toward the direction close to the connecting tube 9, and then thread the locking screw 12 through the threaded hole of the sleeve 10 at one end away from the hook body, and insert it into the plug hole of the connecting tube 9, so as to fix the hand-held part in the shortest state. When adjusting the length of the hand-held part, in order to prevent the sleeve 10 from slipping off the connecting tube 9, an anti-slip block 13 is provided at one end of the connecting tube 9 away from the connecting arm 2, and the anti-slip block 13 always slides in the sleeve 10, so that the sleeve 10 will not slip off and separate from the connecting tube 9.

[0030] Considering that when adjusting the length of the handle, it is necessary to ensure that the push rod 6 can always push the rotating rod to rotate, Figure 1 and Figure 2 The rotating rod is configured as a telescopic rod-shaped structure, and the rotating rod includes a rod body 14 and a slide tube 15 slidably sleeved on one end of the rod body 14, and the outer diameter of the slide tube 15 is smaller than the inner diameter of the connecting tube 9. The end of the rod body 14 away from the slide tube 15 is fixedly connected to the shaft pin 3, and the end of the slide tube 15 away from the rod body 14 is provided with a hinge seat 11, and the hinge seat 11 is slidably connected to the inner wall of the sleeve 10 away from the connecting arm 2. When adjusting the length of the hand-held portion, the length of the rotating rod can also be adjusted accordingly. When the anti-drop block 13 abuts against the end of the sleeve 10 close to the connecting arm 2, that is, the hand-held portion is adjusted to the longest state, the end of the rod body 14 is still located in the slide tube 15. When the push rod 6 is used to push the rotating rod to rotate, under the action of the hinge seat 11, the angle between the rotating rod and the sleeve 10 changes accordingly. At the same time, the rotating rod also drives the hinge seat 11 to slide on the inner wall of the sleeve 10, and the length of the rotating rod also changes accordingly, ensuring that the rotating rod can be smoothly deflected in the sleeve 10, thereby driving the hook body to open and close smoothly.

[0031] The implementation principle of the safety rope hook for a safety belt that is easy to open and close in the embodiment of the present application is as follows: when the hook body needs to be hung on the hanging point, the locking screw 12 can be first removed from the sleeve 10, and then the sleeve 10 can be driven on the connecting tube 9 to move away from the hook body, so that the hand-held part is adjusted to the longest state. Then, the locking screw 12 is threaded through the threaded hole of the sleeve 10 near one end of the hook body, and inserted into the plug hole of the connecting tube 9, so that the hand-held part is fixed in the longest state.

[0032] After completing the length adjustment of the handle, lift the hook body to the hanging point through the handle, and then press the push rod 6, the push rod 6 pushes the rotating rod to rotate, and the rotating rod drives the locking arm 4 to rotate through the axle pin 3, so that one end of the locking arm 4 no longer abuts against the hook body 1, ensuring that the hook body can be opened smoothly.

[0033] Finally, the opened hook body is hung on the hanging point, and the push rod 6 is released. At this time, the push rod 6 moves away from the rotating rod under the driving of the return spring 7, so that the push rod 6 is no longer in contact with the rotating rod. At the same time, driven by the torsion spring, the locking arm 4 and the shaft pin 3 rotate synchronously, and the locking arm 4 is buckled on the hook body 1, so that the hook body is automatically closed, and then the hook body can be safely and stably connected to the hanging point.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention 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 embodiments of the present invention.

Claims

1. A safety rope hook for a safety belt that is easy to open and close, characterized in that: include A hook body, the hook body comprising a hook body, a connecting arm fixed on one end of the hook body, an axle pin rotatably connected to the connecting arm, a locking arm fixedly connected to the axle pin, and an elastic member used to drive the locking arm to rotate and press against the hook body, under the drive of the elastic member, the hook body, the connecting arm and the locking arm can form a closed annular structure, the connecting arm is hollow, the axle pin is radially arranged through the connecting arm, and the middle of the axle pin is located in the cavity of the connecting arm; The hand-held part is fixedly mounted on one end of the connecting arm, and the hand-held part is configured as a hollow rod-shaped structure. A rotating rod is arranged inside the hand-held part, and one end of the rotating rod extends into the cavity of the connecting arm and is fixedly connected to the axle pin. A pushing member for pushing the rotating rod to rotate is arranged on the hand-held part, so that when the rotating rod rotates, the locking arm can be driven to rotate through the axle pin, thereby realizing the opening and closing of the hook body.

2. The safety rope hook for a safety belt that is easy to open and close according to claim 1, characterized in that: The pushing member is configured as a push rod, which moves radially along the hand-held portion and penetrates the side wall of the hand-held portion, with one end located outside the hand-held portion and the other end located in the cavity of the hand-held portion. By pressing the push rod into the hand-held portion, the push rod can push the rotating rod to rotate, and a return spring is sleeved on the push rod to drive the push rod to move in a direction away from the rotating rod.

3. The safety rope hook for a safety belt that is easy to open and close according to claim 2, characterized in that: Both ends of the push rod are sleeved with limit blocks.

4. The safety rope hook for a safety belt that is easy to open and close according to claim 2, characterized in that: The hand-held part includes a connecting tube fixedly connected to the connecting arm and a sleeve slidably mounted on the connecting tube, the sleeve is provided with a locking member for locking the position of the connecting tube and the sleeve, the rotating rod is configured as a telescopic rod-like structure, and an articulated seat is provided at one end of the rotating rod away from the shaft pin, and the articulated seat is slidably connected to the inner wall of one end of the sleeve away from the connecting arm.

5. The safety rope hook for a safety belt that is easy to open and close according to claim 4, characterized in that: The side walls at both ends of the sleeve are penetrated with threaded holes, the locking member is configured as a locking screw threadedly passing through the threaded hole, and the side wall of the connecting tube away from the connecting arm is provided with a socket for inserting the locking screw.

6. The safety rope hook for a safety belt that is easy to open and close according to claim 4, characterized in that: An anti-dropping block is arranged at one end of the connecting tube away from the connecting arm, and the anti-dropping block always slides in the sleeve.

7. The safety rope hook for a safety belt that is easy to open and close according to claim 6, characterized in that: The rotating rod comprises a rod body and a sliding cylinder slidably sleeved on the rod body, one end of the rod body away from the sliding cylinder is fixedly connected to the shaft pin, and one end of the sliding cylinder away from the rod body is hingedly connected to the inner wall of one end of the sleeve by sliding and rotation.

8. The safety rope hook for a safety belt that is easy to open and close according to claim 7, characterized in that: When the anti-dropping block abuts against one end of the sleeve close to the connecting arm, the end of the rod body is still located in the sliding cylinder.

Images