Fastening bolt dismounting device

Abstract

The utility model discloses a fastening bolt dismounting device, and relates to the technical field of bolt dismounting tools. According to the technical key points, the device comprises a fixed sleeve, a first through hole is formed in the center of the fixed sleeve in a penetrating mode, a horizontal stop lever is arranged on one side of the fixed sleeve, and the horizontal stop lever and the fixed sleeve are connected through a first connecting rod; the horizontal stop lever is longer than the fixing sleeve, a control handle longer than the first connecting rod is mounted at the end, away from the first connecting rod, of the horizontal stop lever, and the control handle is located on the side, opposite to the first connecting rod, of the horizontal stop lever. By means of the control handle, the head of the bolt can be easily fixed, in the dismantling process, even if a nut on the bolt is unscrewed suddenly, the horizontal stop lever can be kept in the fixed state due to supporting of the connecting piece, in this way, the situation that the hand, fixing the bolt, of a worker collides with nearby components and is damaged due to the fact that force is not received in time is avoided, and the work efficiency is improved. And the safety is improved when the fastening bolt is disassembled by a worker.

Description

Technical Field

[0001] The present application relates to the technical field of bolt removal tools, and in particular to a fastening bolt removal device. Background Art

[0002] Bolts and nuts are commonly used to connect two parts with holes, providing both connection and fastening. Bolts are a type of fastener consisting of a head and a shank (a cylindrical body with external threads, with the end of the shank away from the head as the tail). They are used in conjunction with a nut to securely connect two parts. This type of connection is called a bolted connection. Unscrewing the nut from the bolt allows the two parts to separate, making bolted connections removable.

[0003] When removing bolts and nuts, the nuts and bolts are usually tightened in the early stage for fixation. In addition, with subsequent use, the bolt surface or the connection between the bolt and the nut will rust due to oxidation. If the nut is directly tightened from the bolt with a wrench, the nut may rotate together with the bolt in the holes of the two parts. Therefore, in order to prevent the bolt from rotating with the nut, workers often use pliers or a wrench to fix the head of the bolt with one hand, and use another wrench or pliers to turn the nut on the bolt with the other hand. During this process, the pliers or wrench used by the worker to fix the bolt head is usually in a suspended state, and the pliers or wrench lacks support. Especially for some severely rusted bolts and nuts, when the worker exerts force to tighten the nut, the nut suddenly loosens on the bolt, and the worker's hand fixing the bolt will suddenly swing because there is no time to remove the force. During this process, the worker's hand can easily touch nearby structures and cause damage. Utility Model Content

[0004] The present application provides a fastening bolt removal device, which can effectively solve the problem that when workers remove fastened bolts and nuts, their hands are easily bumped into the bolt heads.

[0005] The above-mentioned purpose of this application is achieved through the following technical solutions:

[0006] A fastening bolt removal device includes a fixing sleeve, wherein a first through hole is formed through the center of the fixing sleeve, and the shape and size of the cross section of the first through hole are the same as the shape and size of the head of the bolt to be removed;

[0007] A horizontal blocking rod is provided on one side of the fixed sleeve, the axis of the horizontal blocking rod is parallel to the axis of the fixed sleeve, and the horizontal blocking rod and the fixed sleeve are connected by a first connecting rod;

[0008] The length of the horizontal baffle is greater than that of the fixed sleeve. A control handle longer than the first connecting rod is installed at one end of the horizontal baffle away from the first connecting rod, and the control handle is located on the opposite side of the first connecting rod on the horizontal baffle.

[0009] Furthermore, the horizontal barrier rod is sleeved with a second connecting rod that can move freely along its axial direction. The second connecting rod is connected to a nut screwing assembly at one end away from the horizontal barrier rod, and the nut screwing assembly can screw the nut on the bolt screw to be removed.

[0010] Furthermore, the nut tightening assembly includes a bearing, the outer ring of the bearing is fixedly connected to the end of the second connecting rod away from the horizontal barrier rod, the inner ring diameter of the bearing is larger than the diameter of the screw on the bolt to be removed, the inner ring of the bearing is fixedly connected to a movable sleeve near one end of the fixed sleeve, and a second through hole is provided through the center position of the movable sleeve, and the shape and size of the cross-section of the second through hole are the same as the shape and size of the nut on the bolt screw to be removed.

[0011] Furthermore, a plurality of sockets are evenly arranged on the circumference of the movable sleeve, the holes in the sockets are square, a turning handle is inserted into one of the sockets, and the shape of one end of the turning handle inserted into the socket matches the shape of the hole in the socket.

[0012] Furthermore, the shape of the handle is Z-shaped.

[0013] Furthermore, the horizontal baffle is provided with a square plug at one end away from the first connecting rod, and a matching square socket is provided at one end of the control handle. The control handle can be mounted on the square plug on the horizontal baffle through the square socket thereon.

[0014] Furthermore, the end of the horizontal baffle rod away from the control handle is slidably connected to the first connecting rod along the axial direction of the horizontal baffle rod, and a limiting ring is provided on the side of the first connecting rod close to the control handle. The limiting ring is sleeved on the horizontal baffle rod and the two are fixedly connected. An external thread is provided on the horizontal baffle rod on the side of the first connecting rod away from the limiting ring, and an end cover is threadedly connected to the external threaded part of the horizontal baffle rod.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] When removing a bolt fastened by a nut between two connecting parts, the worker can first put the fixed sleeve at one end of the horizontal barrier rod of the present application on the head of the bolt to be removed, press the horizontal barrier rod against the edge of one side of the connecting part, and press the control handle toward the connecting part so that the fixed sleeve fixes the head of the bolt. At this time, the contact position between the horizontal barrier rod and the connecting part is equivalent to the fulcrum, the control handle is equivalent to the power arm, and the first connecting rod is equivalent to the resistance arm. Since the length of the control handle of the present application is greater than the length of the first connecting rod, the worker can easily fix the bolt head through the control handle. During the removal process, even if the nut on the bolt is suddenly loosened, the horizontal barrier rod will remain in a fixed state due to the support of the connecting part. In this way, the worker's hand fixing the bolt will not hit the nearby components and cause damage due to untimely force application, thereby improving the safety of the worker when removing the tightened bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of this application;

[0019] Figure 2 This is a schematic diagram of the structure after the throttle, end cover and control handle of the present application are disassembled;

[0020] Figure 3 This is a schematic diagram of the state of the present application when removing bolts and nuts.

[0021] Figure numerals: 1. fixed sleeve; 2. first through hole; 3. horizontal blocking rod; 4. first connecting rod; 5. control handle; 6. second connecting rod; 7. nut tightening assembly; 71. bearing; 72. movable sleeve; 73. second through hole; 8. socket; 9. turning handle; 10. limiting ring; 11. end cover. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application are clearly and completely described below. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts also fall within the scope of protection of this application.

[0023] like Figure 1-Figure 3As shown, a fastening bolt removal device disclosed in the present application includes a fixing sleeve 1, a first through hole 2 is formed through the center of the fixing sleeve 1, and the shape and size of the cross section of the first through hole 2 are the same as the shape and size of the head of the bolt to be removed;

[0024] A horizontal baffle 3 is provided on one side of the fixed sleeve 1. The axis of the horizontal baffle 3 is parallel to the axis of the fixed sleeve 1. The horizontal baffle 3 and the fixed sleeve 1 are connected by a first connecting rod 4.

[0025] The length of the horizontal baffle 3 is greater than that of the fixed sleeve 1 , and a control handle 5 longer than the first connecting rod 4 is installed at one end of the horizontal baffle 3 away from the first connecting rod 4 , and the control handle 5 is located on the opposite side of the first connecting rod 4 on the horizontal baffle 3 .

[0026] In the above embodiment, the shape and size of the first through hole 2 on the fixed sleeve 1 of the present application are identical to the shape and size of the head of the bolt to be removed. Thus, when the first through hole 2 on the fixed sleeve 1 is inserted into the head of the bolt to be removed, the head of the bolt to be removed can be fixed as long as the fixed sleeve 1 remains in place. The length of the horizontal retaining rod 3 is greater than the length of the fixed sleeve 1. Thus, after the fixed sleeve 1 is inserted into the head of the bolt to be removed, the horizontal retaining rod 3 can be clamped on the edge of the connecting member fastened by the bolt and nut.

[0027] When a worker needs to remove a bolt and nut between two connecting parts, the worker can first put the fixing sleeve 1 at one end of the horizontal barrier rod 3 of the present application on the head of the bolt to be removed, press the horizontal barrier rod 3 against the edge of one side of the connecting part, and use the control handle 5 to press hard in the direction of the connecting part so that the fixing sleeve 1 fixes the head of the bolt. At this time, the contact position between the horizontal barrier rod 3 and the connecting part is equivalent to the fulcrum, the control handle 5 is equivalent to the power arm, and the first connecting rod 4 is equivalent to the resistance arm. Since the length of the control handle 5 of the present application is greater than the length of the first connecting rod 4, the worker can easily fix the head of the bolt by exerting force on the control handle 5 based on the lever principle. During the removal process, since the direction of the force applied to the horizontal barrier rod 3 is toward the connecting part and the horizontal barrier rod 3 is against the edge of the connecting part, even if the nut on the bolt is suddenly loosened, the horizontal barrier rod 3 will continue to maintain its position fixed due to the support of the connecting part. In this way, the worker's hand fixing the bolt will not hit the nearby structural parts due to untimely force withdrawal, causing hand injury, as in the prior art, thereby improving the safety of the worker when removing the fastened bolt.

[0028] Further, if Figure 1 and Figure 2 As shown, the horizontal baffle 3 is provided with a second connecting rod 6 that can move freely along its axial direction. The second connecting rod 6 is connected to a nut screwing assembly 7 at one end away from the horizontal baffle 3. The nut screwing assembly 7 can screw the nut on the bolt screw to be removed.

[0029] In the above embodiment, the present application integrates the nut screwing assembly 7 for removing the nut on the horizontal barrier rod 3, which facilitates workers to quickly start the bolt removal work. The second connecting rod 6 can move freely along the horizontal barrier rod 3, which facilitates the nut screwing assembly 7 during the nut removal process. When the position of the nut on the bolt changes, the position of the second connecting rod 6 and the nut screwing assembly 7 on the horizontal barrier rod 3 changes synchronously.

[0030] Further, if Figure 2 As shown, the nut tightening assembly 7 includes a bearing 71, the outer ring of the bearing 71 is fixedly connected to the end of the second connecting rod 6 away from the horizontal barrier rod 3, the inner ring diameter of the bearing 71 is larger than the diameter of the screw on the bolt to be removed, and the inner ring of the bearing 71 is fixedly connected to a movable sleeve 72 near one end of the fixed sleeve 1, and a second through hole 73 is penetrated by the center position of the movable sleeve 72. The shape and size of the cross section of the second through hole 73 are the same as the shape and size of the nut on the bolt screw to be removed.

[0031] In the above embodiment, the inner ring of the bearing 71 is fixedly connected to the movable sleeve 72, and a ball bearing is provided between the inner and outer rings of the bearing 71. In this way, when a worker applies a tangential force to the movable sleeve 72, the movable sleeve 72 can freely rotate within the outer ring of the bearing 71 along with the inner ring of the bearing 71. In the present application, the movable sleeve 72 is provided with a second through hole 73 in the center thereof, which has the same shape and size as the nut on the bolt to be removed. When the second through hole 73 on the movable sleeve 72 is fitted over the nut of the bolt to be removed, the worker rotates the movable sleeve 72, which can then rotate the nut on the screw portion of the bolt to be removed, thereby achieving the removal effect.

[0032] Further, if Figure 1 and Figure 2 As shown, a plurality of sockets 8 are evenly arranged on the circumference of the movable sleeve 72 , and the hole shape in the sockets 8 is square. A turning handle 9 is inserted into one of the sockets 8 , and the shape of one end of the turning handle 9 inserted into the socket 8 matches the shape of the hole shape in the socket 8 .

[0033] In the above embodiment, the end of the throttle 9 and the hole in the socket 8 on the movable sleeve 72 are both square. This improves the stability of the throttle 9 when the movable sleeve 72 is driven to rotate after the throttle 9 is inserted into the socket 8. The arrangement of the throttle 9 can increase the torque when the worker drives the movable sleeve 72 to rotate, which has the effect of saving effort when the worker drives the nut to rotate. The multiple sockets 8 on the movable sleeve 72 make it convenient for the worker to flexibly install the throttle 9 in a position that suits their own force when rotating the movable sleeve 72.

[0034] Further, if Figure 1 and Figure 2 As shown, the shape of the turning handle 9 is Z-shaped.

[0035] In the above embodiments, the handlebar 9 of the present application is arranged in a Z shape, so that after the handlebar 9 is connected to the movable sleeve 72, the distance between the area on the handlebar 9 for the worker to hold and the connecting part can be increased so that the worker has enough space to hold the handlebar 9.

[0036] Further, if Figure 2 As shown, a square plug is provided at one end of the horizontal baffle 3 away from the first connecting rod 4, and a matching square socket is provided at one end of the control handle 5. The control handle 5 can be mounted on the square plug on the horizontal baffle 3 through the square socket thereon.

[0037] In the above embodiment, the control handle 5 of the present application is inserted into the square plug on the horizontal barrier rod 3 through the square socket at one end thereof, thereby preventing the horizontal barrier rod 3 from slipping inside the control handle 5 when the worker rotates the horizontal barrier rod 3 or applies force to the horizontal barrier rod 3 through the control handle 5. In addition, since the connection between the horizontal barrier rod 3 and the control handle 5 of the present application is detachable, when the worker needs to tighten nuts of other specifications, he can remove the control handle 5 from the horizontal barrier rod 3 and the entire nut tightening assembly 7 as well, so as to replace it with a nut tightening assembly 7 of other specifications that matches the specifications of the nut to be removed.

[0038] Further, if Figure 1 and Figure 2 As shown, the end of the horizontal baffle rod 3 away from the control handle 5 is slidably connected to the first connecting rod 4 along the axial direction of the horizontal baffle rod 3. A limiting ring 10 is provided on the side of the first connecting rod 4 close to the control handle 5. The limiting ring 10 is sleeved on the horizontal baffle rod 3 and the two are fixedly connected. An external thread is provided on the side of the first connecting rod 4 away from the limiting ring 10 on the horizontal baffle rod 3, and an end cover 11 is threadedly connected to the external threaded part of the horizontal baffle rod 3.

[0039] In the above embodiments, a partial groove is provided on the horizontal baffle rod 3 of the present application at the end away from the control handle 5 along its axial direction, and a protrusion matching it is provided on the inner side of the end where the first connecting rod 4 is connected to the horizontal baffle rod 3. In this way, the horizontal baffle rod 3 and the first connecting rod 4 can be slidably connected along the axial direction of the horizontal baffle rod 3, so that after the first connecting rod 4 is put on the horizontal baffle rod 3, it will not rotate around the axial direction of the horizontal baffle rod 3, but when the first connecting rod 4 is disassembled, the first connecting rod 4 can be removed along the axial direction of the horizontal baffle rod 3. The limiting ring 10 set on the horizontal baffle rod 3 can play a positioning effect when the first connecting rod 4 is installed on the horizontal baffle rod 3. The end cover 11 located on the side of the first connecting rod 4 away from the limiting ring 10 is threadedly connected to the horizontal baffle rod 3. In this way, when the device of the present application is in use, the end cover 11 can fix the first connecting rod 4 on the horizontal baffle rod 3. When it is necessary to replace the fixed sleeve 1 of other specifications, the end cover 11 is removed from the horizontal baffle rod 3, and the old fixed sleeve 1 can be removed through the first connecting rod 4, which is very convenient to use.

[0040] The implementation principle of this embodiment is: before removing the fastening bolt, first replace the fixed sleeve 1 that matches the specifications of the bolt head and the movable sleeve 72 that matches the specifications of the nut, and then put the fixed sleeve 1 at one end of the horizontal barrier rod 3 on the head of the bolt to be removed, and press the horizontal barrier rod 3 against the edge of one side of the connecting part. Press the control handle 5 toward the connecting part so that the fixed sleeve 1 fixes the head of the bolt. At this time, the contact position between the horizontal barrier rod 3 and the connecting part is equivalent to the fulcrum, the control handle 5 is equivalent to the power arm, and the first connecting rod 4 is equivalent to the resistance arm. Since the length of the control handle 5 of this application is greater than the length of the first connecting rod 4, the worker can easily fix the bolt head through the control handle 5. Next, adjust the position of the second connecting rod 6 along the horizontal barrier rod 3 until the movable sleeve 72 on the inner ring of the bearing 71 at the other end of the second connecting rod 6 is sleeved on the nut. Insert the turning handle 9 into one of the sockets 8 of the movable sleeve 72, and then start to loosen the nut on the bolt screw. When the position of the turning handle 9 is inconvenient to operate, the worker can re-insert the turning handle 9 into the socket 8 at another position, and repeatedly turn the turning handle 9 until the nut is unscrewed from the bolt screw, thus completing the removal of the entire fastening bolt. In this process, even if the nut on the bolt is suddenly loosened, the horizontal barrier rod 3 will remain in its fixed state due to the support of the connecting piece. In this way, the worker's hand fixing the bolt will not hit the nearby components and cause damage due to untimely force release, thereby improving the safety of the worker when removing the fastening bolt.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A fastening bolt removal device, characterized in that: It comprises a fixed sleeve (1), wherein a first through hole (2) is provided through the center of the fixed sleeve (1), and the shape and size of the cross section of the first through hole (2) are the same as the shape and size of the head of the bolt to be removed; A horizontal blocking rod (3) is provided on one side of the fixed sleeve (1), the axis of the horizontal blocking rod (3) is parallel to the axis of the fixed sleeve (1), and the horizontal blocking rod (3) and the fixed sleeve (1) are connected via a first connecting rod (4); The length of the horizontal blocking rod (3) is greater than the length of the fixed sleeve (1); a control handle (5) having a length greater than the first connecting rod (4) is installed at one end of the horizontal blocking rod (3) away from the first connecting rod (4); and the control handle (5) is located on the opposite side of the first connecting rod (4) on the horizontal blocking rod (3).

2. The fastening bolt removal device according to claim 1, characterized in that: The horizontal baffle (3) is sleeved with a second connecting rod (6) that can move freely along its axial direction. The second connecting rod (6) is connected to a nut screwing assembly (7) at one end away from the horizontal baffle (3). The nut screwing assembly (7) can screw the nut on the bolt to be removed.

3. The fastening bolt removal device according to claim 2, characterized in that: The nut screwing assembly (7) includes a bearing (71), the outer ring of the bearing (71) is fixedly connected to the end of the second connecting rod (6) away from the horizontal blocking rod (3), the inner ring diameter of the bearing (71) is larger than the diameter of the screw on the bolt to be removed, the inner ring of the bearing (71) is fixedly connected to a movable sleeve (72) near one end of the fixed sleeve (1), and a second through hole (73) is provided at the center position of the movable sleeve (72), and the shape and size of the cross section of the second through hole (73) are the same as the shape and size of the nut on the bolt screw to be removed.

4. The fastening bolt removal device according to claim 3, characterized in that: The movable sleeve (72) is evenly provided with a plurality of sockets (8) on the circumference thereof, wherein the hole shape in the sockets (8) is square, a turning handle (9) is inserted into one of the sockets (8), and the shape of one end of the turning handle (9) inserted into the socket (8) matches the shape of the hole shape in the socket (8).

5. The fastening bolt removal device according to claim 4, characterized in that: The shape of the turning handle (9) is Z-shaped.

6. The fastening bolt removal device according to any one of claims 2 to 5, characterized in that: The horizontal baffle (3) is provided with a square plug at one end away from the first connecting rod (4), and a matching square socket is provided at one end of the control handle (5). The control handle (5) can be sleeved onto the square plug on the horizontal baffle (3) through the square socket thereon.

7. The fastening bolt removal device according to claim 6, characterized in that: The end of the horizontal baffle (3) away from the control handle (5) is slidably connected to the first connecting rod (4) along the axial direction of the horizontal baffle (3); a limiting ring (10) is provided on the side of the first connecting rod (4) close to the control handle (5); the limiting ring (10) is sleeved on the horizontal baffle (3) and the two are fixedly connected; an external thread is provided on the side of the first connecting rod (4) away from the limiting ring (10) on the horizontal baffle (3); and an end cover (11) is threadedly connected to the external thread portion of the horizontal baffle (3).

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