Pin puller

Abstract

The utility model discloses a pin puller, which relates to the technical field of machinery and construction, and comprises a first pull disc, a second pull disc, a pull frame, a sliding rod and a sliding block, a first arc-shaped bayonet is arranged in the middle of the first end of the first pull disc, and a second arc-shaped bayonet is arranged in the middle of the first end of the second pull disc. The first pull disc and the second pull disc can be detachably and fixedly connected, the first arc-shaped bayonet and the second arc-shaped bayonet correspond to each other, and a clamping station is formed; the clamping station is used for clamping a mushroom head or a nut part of a pin; the pull frame is detachably and fixedly connected with the first pull disc and the second pull disc. The sliding rod is used for being detachably and fixedly connected with the pulling frame, and a limiting block is arranged at the end, away from the pulling frame, of the sliding rod. The sliding block is arranged on the outer side of the sliding rod in a sleeving mode and located between the limiting block and the pulling frame, the sliding block can slide along the sliding rod and impact the limiting block so as to drive the clamping station to impact the mushroom head or the nut of the pin, the structure is simple, use is convenient, the operation efficiency is effectively improved, and universality is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical and building technical field, in particular to a pin puller. BACKGROUND

[0002] In the modern industrial production and the actual scene of many mechanical equipment, the maintenance of various mechanical equipment and tools is an important link to maintain normal production operation. Pin as a mechanical connecting piece plays a key fixing role in many mechanical equipment, ensures the relative position accuracy of each part of the equipment, and guarantees the stability and reliability of mechanical operation.

[0003] At present, the commonly used in actual maintenance operation is the impact type pin puller, which has the structural characteristics of containing a rod piece capable of being threadedly connected with the screw hole on the end face of the pin shaft end, and a limiting block is fixed on the rod piece. When using the pin puller, the rod piece end is threadedly connected and fixed with the screw hole on the end face of the positioning pin, and then the limiting block is knocked outwards, and the positioning pin is pulled out by the impact force of the limiting block.

[0004] However, the existing impact type pin puller has obvious defects: on the one hand, the application range is narrow, it can only be used for disassembling the pin with hole on the top; for the pin with screw cap or mushroom head on the top, the pin puller cannot play a role. When dealing with such pins, only screwdrivers or crowbars can be used to forcibly pry, not only the operation difficulty is greatly increased, but also the pins and surrounding parts are easily damaged. On the other hand, the universality is poor. Since the specifications of the pins are various, the pull head of the existing impact type pin puller is usually only suitable for a single specification of pin, and in the actual operation process, different specifications of pull head need to be prepared for pulling different specifications of pin, which significantly increases the operation preparation time and cost, and reduces the overall operation efficiency. These shortcomings limit the application of the existing pin puller in actual work, and there is an urgent need for a more efficient and universal pin pulling solution. TECHNICAL PROBLEM

[0005] The utility model aims at providing a pin puller to solve the problems existing in the prior art, which has simple structure, is convenient to use, effectively improves the operation efficiency, and has good universality.

[0006] In order to achieve the above object, the utility model provides the following scheme:

[0007] The utility model provides a kind of pin puller, comprising: first pull disc, second pull disc, pull frame, slide bar and sliding block, the middle part of the first end of the first pull disc is provided with first arc-shaped socket, the middle part of the first end of the second pull disc is provided with second arc-shaped socket, the first pull disc and the second pull disc can be detachably fixed connection and make the first arc-shaped socket and the second arc-shaped socket correspond and form clamping station, and the clamping station is used for clamping in the mushroom head or nut part of pin;The first pull disc and the second pull disc can be detachably fixed connection respectively with the pull frame;The slide bar is used for being detachably fixed connection with the pull frame, and the end of the slide bar away from the pull frame is provided with limit block;The sliding block is sleeved on the outside of the slide bar and is located between the limit block and the pull frame, and the sliding block can slide along the slide bar and impact the limit block to drive the clamping station to impact the mushroom head or nut of the pin.

[0008] Preferably, further comprising a plurality of first screws and a plurality of first locking nuts, the first pull disc is provided with a plurality of first through holes penetrating the first end and the second end of the first pull disc, the second pull disc is provided with a plurality of second through holes penetrating the first end and the second end of the second pull disc, the first through holes and the second through holes are correspondingly arranged, the first screws are used to pass through the first through holes and the second through holes, and the two ends of the first screws are respectively screwed with one of the first locking nuts to clamp the first pull disc and the second pull disc.

[0009] Preferably, further comprising a second screw, a second locking nut, a third screw and a third locking nut, the two ends of the pull frame are symmetrically provided with a first long slot and a second long slot, the middle part of the first pull disc is provided with a first threaded hole, the middle part of the second pull disc is provided with a second threaded hole, one end of the second screw is used to be screwed in the first threaded hole, the other end is used to pass through the first long slot and be screwed with the second locking nut, one end of the third screw is used to be screwed in the second threaded hole, the other end is used to pass through the second long slot and be screwed with the third locking nut.

[0010] Preferably, one end of the slide bar for connecting with the pull frame is a threaded segment, the middle part of the pull frame is provided with a third threaded hole, and the threaded segment is used to be screwed in the third threaded hole.

[0011] Preferably, the middle part of the sliding block is provided with a first handle part.

[0012] Preferably, further comprising a second handle part, the second handle part is fixedly connected to the end of the limit block away from the pull frame.

[0013] Preferably, further comprising a single-head bolt, the single-head bolt is used to be screwed into the threaded hole of the pin of the top threaded hole.

[0014] The pin puller provided by the utility model has the following technical effects compared with the prior art:

[0015] The utility model provides a pin puller, can directly operate the pin of mushroom head or nut at top, need no longer seek additional adaptation mode, greatly widen the application scope of pin puller, solve the problem that traditional pin puller is difficult to handle such special head shape pin, and two pull discs are detachably fixedly connected, convenient flexible adjustment and maintenance under different working conditions, and the first pull disc and the second pull disc are detachably connected, guarantee the stability of overall structure, and also facilitate replacement or maintenance of each pull disc when needed. The detachable connection of the slide bar and the pull frame is convenient for storage and transportation. The design that the sliding block slides on the slide bar and hits the limiting block, ingeniously utilizes the impact force to realize the pulling action of the pin, provides a simple and effective power transmission mode for pin pulling, and makes the operation process more labor-saving and efficient. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0017] Fig. 1 The structure schematic view of the pin puller provided by the utility model is shown in the figure.

[0018] Fig. 2 The structure schematic view of the first tray and the second tray in the pin puller provided by the utility model is shown in the figure.

[0019] Fig. 3 The structure schematic view of the bracket in the pin puller provided by the utility model is shown in the figure.

[0020] In the figure, 1 is a first pull disc, 2 is a first arc-shaped clamping hole, 3 is a second pull disc, 4 is a second arc-shaped clamping hole, 5 is a pull frame, 6 is a slide bar, 7 is a limiting block, 8 is a sliding block, 9 is a first screw rod, 10 is a first locking nut, 11 is a second screw rod, 12 is a second locking nut, 13 is a third screw rod, 14 is a third locking nut, 15 is a first long slot, 16 is a second long slot, 17 is a second handle part, 18 is a first threaded hole, 19 is a second threaded hole, and 20 is a third threaded hole. DETAILED DESCRIPTION

[0021] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, and obviously, the described embodiments are only some embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] The utility model discloses a pin puller to solve the above-mentioned prior art problems, simple structure, convenient to use, effectively improve the operation efficiency, good versatility.

[0023] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the utility model is further described in detail below with reference to the drawings and specific embodiments.

[0024] The utility model provides a kind of pin puller, as shown in Figs. 1-3 First end middle part of first pull disc 1 is provided with first arc-shaped socket 2, and the middle part of the first end of second pull disc 3 is provided with second arc-shaped socket 4, first pull disc 1 and second pull disc 3 can be detachably fixedly connected and make first arc-shaped socket 2 and second arc-shaped socket 4 correspond and form clamping station, and the clamping station is used for clamping in the mushroom head or nut part of pin;Pull frame 5 is detachably fixedly connected with first pull disc 1 and second pull disc 3 respectively;Slide bar 6 is used for being detachably fixedly connected with pull frame 5, and the end of slide bar 6 away from pull frame 5 is provided with limit block 7;Sliding block 8 is sleeved on the outside of slide bar 6 and is located between limit block 7 and pull frame 5, and sliding block 8 can slide along slide bar 6 and impact limit block 7 to drive clamping station to impact the mushroom head or nut of pin, and pin puller can directly operate the pin with mushroom head or nut at top, without searching for additional adaptation mode again, greatly widen the application range of pin puller, solve the problem that traditional pin puller is difficult to handle such special head shape pin, and two pull discs can be detachably fixedly connected, facilitate flexible adjustment and maintenance under different working conditions, pull frame 5 is detachably connected with first and second pull discs, which not only ensures the stability of the overall structure, but also facilitates replacement or repair of each pull disc when needed. The detachable connection of slide bar 6 and pull frame 5 facilitates storage and transportation. The design of sliding block 8 sliding on slide bar 6 and impacting limit block 7 ingeniously utilizes the impact force to realize the pulling action of pin, provides a simple and effective power transmission mode for pin pulling, makes the operation process more labor-saving and efficient.

[0025] In a preferred embodiment, the pin puller further comprises a plurality of first screws 9 and a plurality of first locking nuts 10, the first pull plate 1 is provided with a plurality of first through holes penetrating the first pull plate 1 from the first end to the second end, the second pull plate 3 is provided with a plurality of second through holes penetrating the second pull plate 3 from the first end to the second end, the first through holes and the second through holes are correspondingly arranged, the first screws 9 are used to pass through the first through holes and the second through holes, and the two ends of the first screws 9 are respectively threadedly connected with a first locking nut 10 to clamp the first pull plate 1 and the second pull plate 3. Through the cooperation of the plurality of first screws 9 and the first locking nuts 10, the first pull plate 1 and the second pull plate 3 can be more stably clamped, the connection between the two pull plates is ensured to be tight during the pin drawing process, the clamping force of the clamping station on the pin is ensured to be sufficient, the pull plate is prevented from loosening during the drawing to cause the pull-out operation to fail, and the reliability of the pin pulling is improved.

[0026] In a preferred embodiment, the pin puller further comprises a second screw 11, a second locking nut 12, a third screw 13 and a third locking nut 14, the two ends of the pull frame 5 are symmetrically provided with a first long slot 15 and a second long slot 16, the middle part of the first pull plate 1 is provided with a first threaded hole 18, the middle part of the second pull plate 3 is provided with a second threaded hole 19, one end of the second screw 11 is used to be threadedly connected to the first threaded hole 18, the other end is used to pass through the first long slot 15 and be threadedly connected with the second locking nut 12, one end of the third screw 13 is used to be threadedly connected to the second threaded hole 19, the other end is used to pass through the second long slot 16 and be threadedly connected with the third locking nut 14. Not only the stability of the connection between the pull frame 5 and the first and second pull plates is further enhanced, but also the first and second long slots allow the pull plates to be slightly adjusted in position within a certain range along the long slot direction, better adapt to the position and size differences of different types of pins, and improve the adaptability and versatility of the pin puller to different working conditions.

[0027] In a preferred embodiment, one end of the slide rod 6 used to be connected with the pull frame 5 is a threaded section, the middle part of the pull frame 5 is provided with a third threaded hole 20, and the threaded section is used to be threadedly connected to the third threaded hole 20. The slide rod 6 and the pull frame 5 are connected through the threaded connection between the threaded section and the third threaded hole 20, which has the characteristics of firm installation and convenient disassembly. The threaded connection can ensure that the slide rod 6 does not loosen or fall off during the drawing process, and ensure that the drawing force is stably transmitted. At the same time, this connection method is convenient for replacing the slide rod 6 according to actual needs, or disassembling and storing the entire pin puller, which is more conducive to long-term maintenance and use of the equipment.

[0028] In a preferred embodiment, a first handle is provided in the middle of the slider 8. The first handle greatly facilitates the operator's sliding operation of the slider 8. The operator can more comfortably and accurately control the sliding force and frequency of the slider 8, making it easier to apply force, reducing errors caused by inconvenience in operation, and improving the efficiency and accuracy of the pin pulling operation.

[0029] In a preferred embodiment, the pin puller further includes a second handle portion 17, which is fixedly connected to the end of the limiting block 7 away from the puller 5. The second handle portion 17 provides an auxiliary gripping point for the entire pin puller during operation. When the operator holds the first handle portion on the slider 8 and slides the slider 8, he can also hold the second handle portion 17 to form a better grip and force application posture, which improves the stability during operation, reduces hand fatigue, and further enhances the operating experience.

[0030] In a preferred embodiment, the pin puller further includes a single-ended bolt for screwing into the threaded hole of a pin with a threaded top. The inclusion of the single-ended bolt allows the pin puller to handle not only mushroom-head or nut-type pins but also pins with threaded tops. By screwing the single-ended bolt into the threaded top of the pin and then using other components of the pin puller to pull the bolt, the pin is removed, further expanding the applicability of the pin puller and achieving a universal pulling function for pins with various head structures.

[0031] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A pin puller, characterized in that: include: The first pull plate has a first arc-shaped notch at the middle of its first end. The second pull plate has a second arc-shaped bayonet at the middle of the first end. The first pull plate and the second pull plate are detachably fixedly connected and the first arc-shaped bayonet and the second arc-shaped bayonet correspond to each other to form a snap-fit ​​station. The snap-fit ​​station is used to snap onto the mushroom head or nut part of the pin. A pull bracket, wherein the pull bracket is detachably and fixedly connected to the first pull plate and the second pull plate respectively; A sliding rod, the sliding rod being detachably and fixedly connected to the pull bracket, and a limit block being provided at the end of the sliding rod away from the pull bracket; and A slider is sleeved on the outside of the slide rod and located between the limiting block and the pull frame. The slider can slide along the slide rod and strike the limiting block to drive the snap-fit ​​station to strike the mushroom head or nut of the pin.

2. The pin puller according to claim 1, characterized in that: It also includes multiple first screws and multiple first locking nuts. The first pull plate is provided with multiple first through holes penetrating the first end and the second end of the first pull plate. The second pull plate is provided with multiple second through holes penetrating the first end and the second end of the second pull plate. The first through holes and the second through holes are correspondingly arranged. The first screws are used to pass through the first through holes and the second through holes, and the two ends of the first screws are respectively threadedly connected to a first locking nut to clamp the first pull plate and the second pull plate.

3. The pin puller according to claim 2, characterized in that: It also includes a second screw, a second locking nut, a third screw, and a third locking nut. The two ends of the pull frame are symmetrically provided with a first elongated hole and a second elongated hole. The first pull plate has a first threaded hole in the middle, and the second pull plate has a second threaded hole in the middle. One end of the second screw is used to be threaded into the first threaded hole, and the other end is used to pass through the first elongated hole and be threaded into the second locking nut. One end of the third screw is used to be threaded into the second threaded hole, and the other end is used to pass through the second elongated hole and be threaded into the third locking nut.

4. The pin puller according to claim 3, characterized in that: The end of the slide rod that is used to connect with the pull frame is a threaded section, and the pull frame is provided with a third threaded hole in the middle, and the threaded section is used to connect with the threaded part in the third threaded hole.

5. The pin puller according to claim 4, characterized in that: The slider has a first handle in the middle.

6. The pin puller according to claim 5, characterized in that: It also includes a second handle, which is fixedly connected to the end of the limiting block away from the pull frame.

7. The pin puller according to claim 6, characterized in that: It also includes a single-ended bolt for screwing into the threaded hole of a pin with a top threaded hole.

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