An extractor

Abstract

This utility model discloses a puller, comprising: a base having a supporting surface; a top hinge having multiple hinge ears; two drive connecting arm assemblies, the top ends of which are hinged to the hinge ears, and the bottom ends of which are hinged to the base, and the two drive connecting arm assemblies are arranged in a mirror image; two pull-out connecting arm assemblies, the top ends of which are hinged to the hinge ears, and the bottom ends of which are provided with pull-out hooks, and the two pull-out connecting arm assemblies are arranged in a mirror image; and a drive assembly connected to the two drive connecting arm assemblies for driving the two drive connecting arm assemblies to move synchronously closer to or further away from each other, thereby synchronously driving the two pull-out connecting arm assemblies to move closer to or further away from the top hinge. During the pull-out process, the object being pulled out experiences balanced force, the pull-out process is stable, and damage to the needle pins is prevented. Furthermore, the puller has a simple structure and is easy to operate.

Description

Technical Field

[0001] This utility model relates to the field of chip extraction and removal equipment technology, and in particular to an extraction and removal device that can be stably and evenly subjected to force. Background Technology

[0002] In thermal imaging array pin-type detectors, the detector chip is inserted into the detector circuit board via a number of pins. Due to the characteristics of array pins—long pins, small diameter, numerous pins, and large target surface—the connection between the pins and the detection circuit is very strong and tight, making it difficult to manually separate the detector chip from the detector circuit board after insertion. To address this issue, existing technologies generally use a chip puller to assist in separation. However, due to their structural design, existing chip pullers experience uneven force on the detector chip during extraction, causing the chip pins to tilt after extraction. This affects subsequent chip reinsertion and may even damage the pins.

[0003] To address the aforementioned problems, there is an urgent need to design a lifting device that is simple in structure, provides balanced lifting force, and is easy to operate. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a chip puller to solve the technical problem of uneven force applied to the chip by the existing chip puller.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An embodiment of this utility model provides a puller, which includes:

[0007] A base having a supporting surface;

[0008] A top hinge member, wherein the top hinge member is provided with a plurality of hinge lugs;

[0009] Two drive connecting arm assemblies, the top ends of the two drive connecting arm assemblies are hinged to the hinge lugs, the bottom ends are hinged to the base, and the two drive connecting arm assemblies are arranged in a mirror image.

[0010] At least two pull-out connecting arm assemblies, each divided into two equal groups, with its top end hinged to a hinge lug and its bottom end provided with a pull-out hook; the two groups of pull-out connecting arm assemblies are arranged in a mirror image.

[0011] A drive assembly connected to the two drive connecting arm assemblies is used to drive the two drive connecting arm assemblies to move synchronously closer to or further away from each other, so as to synchronously drive the two pull-out connecting arm assemblies to move closer to or further away from the top hinge.

[0012] The base has a through hole in the middle, and the lower part of the pull-out connecting arm assembly extends into the through hole.

[0013] The drive assembly includes a screw and a handle for driving the screw, wherein the screw is screwed to the same height position of the two drive connecting arm assemblies.

[0014] The screw is provided with a limiting part on the side near the handle, and the limiting part is located on the outside of the drive connecting arm assembly.

[0015] The support surface has at least three support protrusions.

[0016] The top hinge includes a square body and connecting ears respectively disposed at the center of the four sides of the square body. The top ends of the two drive connecting arm assemblies and the two pull-out connecting arm assemblies are respectively hinged to one of the connecting ears.

[0017] The base is provided with two oppositely arranged base connecting ears, and the bottom ends of the two drive connecting arm assemblies are respectively hinged to one of the base connecting ears.

[0018] The drive connecting arm assembly includes: a transmission arm and a first hinge arm hinged to the top end of the transmission arm, the bottom end of the transmission arm being hinged to the base, the top end of the first hinge arm being hinged to the top hinge member, and the drive assembly driving the transmission arm.

[0019] The transmission arm includes a screw plate portion and a bent plate portion formed by bending the edge of the screw plate portion.

[0020] The pull-out connecting arm assembly includes a pull-out arm and a second hinge arm hinged to the top end of the pull-out arm. The pull-out hook is disposed at the lower end of the pull-out arm, and the top of the second hinge arm is hinged to the top hinge member.

[0021] The puller of this utility model has a puller connecting arm assembly and a drive connecting arm assembly mirror-hinged to the base, and the drive assembly synchronously drives the connecting arm assembly. During the puller process, the object being pulled is subjected to balanced force, the puller process is stable, and the pins are prevented from being damaged. Moreover, the puller has a simple structure and is easy to operate.

[0022] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this utility model more obvious and easy to understand, the following are preferred embodiments, which are described in detail below. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the working state of the puller and detector in an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the lifting object detector part of the lifting device according to an embodiment of the present utility model.

[0025] Figure 3 This is a schematic diagram of the internal state of the puller and detector in the pull-out state according to an embodiment of the present invention.

[0026] Figure 4 and Figure 5 These are schematic diagrams of the overall structure of the puller according to an embodiment of the present invention from different perspectives.

[0027] Figure 6 This is a top view of the puller according to an embodiment of the present invention.

[0028] Figure 7 This is a bottom view of the puller according to an embodiment of the present utility model.

[0029] Figure 8 This is a schematic diagram of the assembly of the drive connecting arm assembly and the base of the puller according to an embodiment of the present invention.

[0030] Figure 9 This is a schematic diagram of the lifting connecting arm assembly of the lifting device according to an embodiment of the present utility model.

[0031] Figure 10 for Figure 3 The diagram shows a magnified view of part A.

[0032] Explanation of reference numerals in the attached figures:

[0033] Detector bracket 21, detector circuit board 22, detector chip 23, base 11, top hinge 12, first drive connecting arm assembly 13, second drive connecting arm assembly 14, first pull-out connecting arm assembly 15, second pull-out connecting arm assembly 16, drive assembly 17, support surface 110, support protrusion 111, through hole 112, square body 121, first connecting ear 122, second connecting ear 123, third connecting ear 124, fourth connecting ear 125 The components include: a first base connecting ear 113, a second base connecting ear 114, a first hinge arm 131, a transmission arm 132, a third rotating shaft 133, a second rotating shaft 134, a first rotating shaft 135, a screw plate part 1321, a bending plate part 1322, a first pulling arm 152, a pulling hook 1521, a fifth rotating shaft 153, a fourth rotating shaft 154, a second hinge arm 151, a screw 171, a handle 172, a limiting part 173, a puller 100, and a detector 200. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] In thermal imaging array pin-type detectors, the detector chip is inserted into the detector circuit board via a number of pins. Due to the characteristics of long pins, small diameter, numerous pins, and large target surface in array-type pins, the connection between the pins and the detection circuit is very strong and tight, making it difficult to manually separate the detector chip from the detector circuit board after insertion. To address this problem, existing technologies generally use a chip puller to assist in separation. However, due to their structural design, existing chip pullers cause uneven force on the detector chip during extraction, leading to tilting of the chip pins after extraction, affecting subsequent reinsertion of the chip, or even damaging the pins. To solve the above problems, this embodiment discloses a chip puller 100.

[0042] Please see Figure 1 and Figure 2 In this embodiment, the puller 100 is used to remove the detector chip of the thermal imaging detector 200. The detector 200 includes: a detector bracket 21, a detector circuit board 22 connected to the detector bracket 21, and a detector chip 23 inserted into the detector circuit board 22. Because the detector chip 23 has long pins, a small diameter, many pins, and a large target surface, it is difficult to remove it by hand after it is inserted into the detector circuit board 22. Even if it is removed, the pins are likely to be bent or damaged. To address this scenario, this embodiment provides a puller 100 to assist in removing the detector chip 23. It should be noted that this embodiment only uses... Figure 1The detector 200 shown is used as an example for illustration, but it can certainly be extended to the removal and removal process between chips and circuit boards with long pins and firm connections.

[0043] Please see Figures 1 to 10 This embodiment provides a puller 100, which includes:

[0044] Base 11, the base 11 having a support surface 110;

[0045] Top hinge 12, wherein the top hinge 12 is provided with a plurality of hinge ears;

[0046] The first drive connecting arm assembly 13 and the second drive connecting arm assembly 14 are hinged at their top ends to the hinge ears of the top hinge member 12, and their bottom ends are hinged to the base 11. The first drive connecting arm assembly 13 and the second drive connecting arm assembly 14 are mirror images of each other.

[0047] The first pull-out connecting arm assembly 15 and the second pull-out connecting arm assembly 16 are hinged at their top ends to the hinge ears of the top hinge member 12. The bottom ends of the first pull-out connecting arm assembly 15 and the second pull-out connecting arm assembly 16 are provided with pull-out hooks 1521, and the first pull-out connecting arm assembly 15 and the second pull-out connecting arm assembly 16 are mirror images of each other.

[0048] A drive assembly 17 is connected to a first drive connecting arm assembly 13 and a second drive connecting arm assembly 14. The drive assembly 17 is used to move the first drive connecting arm assembly 13 and the second drive connecting arm assembly 14 toward or away from each other synchronously, so as to synchronously drive the first pull-out connecting arm assembly 15 and the second pull-out connecting arm assembly 16 toward or away from the top hinge 12.

[0049] In another embodiment, a plurality of pull-out connecting arm assemblies with the same structure as the first pull-out connecting arm assembly 15 and the second pull-out connecting arm assembly 16 are provided. The plurality of pull-out connecting arm assemblies are divided into two equal groups, and the two groups of pull-out connecting arm assemblies are mirror images of each other.

[0050] like Figure 4The first drive connecting arm assembly 13 and the second drive connecting arm assembly 14 are driven by the drive assembly 17, moving closer or further apart. When they approach each other, since the top ends of the first drive connecting arm assembly 13 and the second drive connecting arm assembly 14 are hinged to the top hinge 12 and the bottom ends are hinged to the base 11, when the position of the base 11 remains unchanged, the top hinge 12 is synchronously driven to rise. Since the top ends of the first pull-out connecting arm assembly 15 and the second pull-out connecting arm assembly 16 are also hinged to the top hinge 12, the first pull-out connecting arm assembly 15 and the second pull-out connecting arm assembly 16 will be synchronously pulled upward by the top hinge 12, so that the pull-out hooks 1521 provided at the lower ends of the first pull-out connecting arm assembly 15 and the second pull-out connecting arm assembly 16 will rise. When the base 11 is supported on the detector bracket 21, the pull-out hooks 1521 will be hooked on the bottom of the detector chip 23, ultimately separating the detector circuit board 22 on the detector bracket 21 from the detector chip 23.

[0051] During the separation process of the auxiliary detector chip 23 from the detector circuit board 22, the first pull-out connecting arm assembly 15 and the second pull-out connecting arm assembly 16 are mirror images of each other. Their force acts on the bottom of the detector chip 23, approximately at the center of the bottom of the opposite side of the detector chip 23, resulting in a relatively balanced force on the detector chip 23. Furthermore, the first drive connecting arm assembly 13 and the second drive connecting arm assembly 14 are mirror images of the plane containing the first pull-out connecting arm assembly 15 and the second pull-out connecting arm assembly 16. Therefore, the lifting force exerted by the first drive connecting arm assembly 13 and the second drive connecting arm assembly 14 on the top hinge 12 remains balanced and stable. This ensures that the detector chip 23 experiences balanced force and a uniform pull-out speed throughout the entire pulling process. Moreover, the separation direction between the detector chip 23 and the detector circuit board 22 remains perpendicular, which coincides with the pins on the detector chip 23, ultimately achieving a non-destructive separation of the detector chip 23 from the detector circuit board 22.

[0052] Please refer to it again. Figure 8 The base 11 has a through hole 112 in the middle, and the lower parts of the first lifting connecting arm assembly 15 and the second lifting connecting arm assembly 16 extend into the through hole 112. During the lifting and lowering process of the first lifting connecting arm assembly 15 and the second lifting connecting arm assembly 16, the hole wall of the through hole 112 can also limit them, preventing the lifting hooks 1521 at the lower ends of the first lifting connecting arm assembly 15 and the second lifting connecting arm assembly 16 from opening outward and disengaging from the hook state on the bottom of the detector chip 23, thus making it impossible to lift the detector chip 23 smoothly.

[0053] In this embodiment, a through hole 112 is provided in the middle of the base 11, which facilitates the lower parts of the first pull-out connecting arm assembly 15 and the second pull-out connecting arm assembly 16 to extend into and limit their movement, and also facilitates the quick upward removal of the detector chip 23 from the through hole 112. In other embodiments, the through hole 112 used for guiding and limiting the first pull-out connecting arm assembly 15 and the second pull-out connecting arm assembly 16 can be replaced by two independent small-diameter openings provided on the base 11, for guiding and limiting respectively.

[0054] Please see Figure 8 The drive assembly 17 includes a screw 171 and a handle 172 for driving the screw 171. The screw 171 is screwed to the same height as the first drive connecting arm assembly 13 and the second drive connecting arm assembly 14. The handle 172 is connected to one end of the screw 171 and has a large gripping area and a labor-saving structural design. When the drive assembly 17 is started, the handle 172 is rotated, which synchronously drives the screw 171 to rotate. The screw 171 is screwed to the first drive connecting arm assembly 13 and the second drive connecting arm assembly 14 respectively. The threads of the threaded holes on the first drive connecting arm assembly 13 and the second drive connecting arm assembly 14 are opposite in direction, so that when the screw 171 is rotated, the movement directions of the first drive connecting arm assembly 13 and the second drive connecting arm assembly 14 are exactly opposite, that is, they move synchronously towards each other or synchronously away from each other.

[0055] In another embodiment, the drive assembly 17 may also employ other drive structures, which have the drive characteristics of driving the first drive connecting arm assembly 13 and the second drive connecting arm assembly 14 to move synchronously towards each other or synchronously move away from each other. In this embodiment, the screw 171 is used to drive the first drive connecting arm assembly 13 and the second drive connecting arm assembly 14 by screwing, which has the advantages of simple structure, low cost, and convenient operation.

[0056] The screw 171 has a limiting part 173 on the side near the handle 172, and the limiting part 173 is located on the outside of the second drive connecting arm assembly 14. That is, the limiting part 173 is used to limit the maximum travel of the second drive connecting arm assembly 14. Similarly, a nut can be added to the other end of the screw 171 to prevent the screw 171 from rotating excessively and disengaging from the first drive connecting arm assembly 13, thus losing its driving capability.

[0057] Please refer to it again. Figure 5The support surface 110 is provided with at least three support protrusions 111. When the detector chip 23 is pulled out, the base 11 supports and is fixed to the detector bracket 21 connected to the detector circuit board 22, and the detector bracket 21 provides the support force point for the base 1. If the detector bracket 21 or a support body with the same support as the detector bracket 21 has a pull-out support surface, it can directly abut against the support surface 110 to provide support. The abutting support surface 110 can be a plane or a non-plane that fits each other. At this time, the force exerted by the base 11 on the support body is more balanced.

[0058] If there is no support surface on the support body or the conditions for setting a support surface are not available, a protruding support protrusion 111 can be provided at the bottom of the support surface 110. In order to improve the support stability, at least three support protrusions 111 are provided on the support surface 110. In this embodiment, there are four support protrusions 111, and the four support protrusions 111 are distributed in a square shape.

[0059] like Figure 8 As shown, the top hinge 12 includes a square body 121, and a first connecting ear 122, a second connecting ear 123, a third connecting ear 124, and a fourth connecting ear 125 respectively disposed at the center positions of the four sides of the square body 121. The top end of the first drive connecting arm assembly 13 is hinged to the second connecting ear 123 via a first pivot 135, the top end of the second drive connecting arm assembly 14 is hinged to the first connecting ear 122, the top end of the first pull-out connecting arm assembly 15 is hinged to the third connecting ear 124, and the top end of the second pull-out connecting arm assembly 16 is hinged to the fourth connecting ear 125. In this embodiment, the square body 121 is a block structure with a square cross-section, and the corresponding first connecting ear 122, second connecting ear 123, third connecting ear 124, and fourth connecting ear 125 have the same structure and are symmetrically arranged with respect to the square body 121.

[0060] In another embodiment, only the first connecting ear 122 and the second connecting ear 123 may be kept to have the same structure and be symmetrically arranged, and the third connecting ear 124 and the fourth connecting ear 125 may have the same structure and be symmetrically arranged. The purpose is to keep the operation of the first drive connecting arm assembly 13 and the second drive connecting arm assembly 14, which are mirror images connected to them, synchronized. Similarly, it is also to keep the operation of the first pull-out connecting arm assembly 15 and the second pull-out connecting arm assembly 16 synchronized.

[0061] Please refer to it again. Figure 6 The base 11 is also provided with two oppositely arranged first base connecting ears 113 and second base connecting ears 114. The bottom end of the first drive connecting arm assembly 13 is hinged to the first base connecting ear 113, and the bottom end of the second drive connecting arm assembly 14 is hinged to the second base connecting ear 114.

[0062] Please see Figure 8 The first drive connecting arm assembly 13 and the second drive connecting arm assembly 14 have the same structure. Taking the first drive connecting arm assembly 13 as an example, it includes: a transmission arm 132 and a first hinge arm 131 hinged to the top end of the transmission arm 132 via a third rotating shaft 133. The bottom end of the transmission arm 132 is hinged to the first base connecting ear 113 on the base 11 via a second rotating shaft 134. The top of the first hinge arm 131 is hinged to the second connecting ear 123 of the top hinge member 12. The drive assembly 17 drives the transmission arm 132, that is, the screw 171 is screwed to the transmission arm 132.

[0063] The transmission arm 132 includes a screw plate portion 1321 and a bent plate portion 1322 formed by bending the edge of the screw plate portion 1321. The screw plate portion 131 and the bent plate portion 1322 form a certain angle, so that the screw connection between the screw 171 and the transmission arm 132 remains smooth during the lifting or lowering process driven by the drive assembly 17. That is, in this embodiment, the screw 171 can always remain in a horizontal state.

[0064] Please refer to it again. Figure 9 The first pull-out connecting arm assembly 15 and the second pull-out connecting arm assembly 16 have the same structure. Taking the first pull-out connecting arm assembly 15 as an example, it includes: a pull-out arm 152 and a second hinge arm 151 hinged to the top end of the pull-out arm 152 via a fourth pivot 154. The pull-out hook 1521 is disposed at the lower end of the pull-out arm 152. The top of the second hinge arm 151 is hinged to the fourth connecting ear 125 of the top hinge member 12 via a fifth pivot 153.

[0065] In this embodiment, the pull-out hook 1521 is a hanging plate structure that is vertically bent from the lower end of the pull-out arm 152. In other embodiments, in order to increase the contact area between the pull-out hook 1521 and the detector chip 23 and reduce the defect of excessive local stress, the pull-out hook 1521 can also be extended laterally to give it a larger contact surface.

[0066] Please refer to it again. Figures 1 to 3 ,as well as Figure 10 The pulling process of the puller 100 is as follows:

[0067] The detector bracket 21 is provided with a connecting groove for connecting the detector circuit board 22, and the side wall of the connecting groove is provided with a clearance groove 211.

[0068] First, the operating handle 172 drives the screw 171, causing the lifting hooks 1521 of the first lifting connecting arm assembly 15 and the second lifting connecting arm assembly 16 to penetrate into the interior of the detector bracket 21 from the clearance groove 211, and then gently push the lifting hooks 1521 towards each other so that they are hooked onto the bottom of the detector chip 23.

[0069] Then, rotate the handle 172 in the opposite direction to make the screw 171 rotate synchronously in reverse, which will drive the first drive connecting arm assembly 13 and the second drive connecting arm assembly 14 to rise, and simultaneously drive the first pull-out connecting arm assembly 15 and the second pull-out connecting arm assembly 16 to rise. Continue to rotate the screw 171 until the detector chip 23 is completely separated from the detector circuit board 22, thus completing the separation of the detector chip 23 from the detector circuit board 22.

[0070] As can be seen from the introduction of the pulling process of the puller 100, the operation is simple and convenient, the process is stable and uniform, and the probe chip 23 always remains perpendicular to the probe circuit board 22, thus protecting the pins from being bent or damaged.

[0071] The puller in this embodiment has the puller connecting arm assembly and the drive connecting arm assembly mirror-hinged to the base, and the drive assembly synchronously drives the connecting arm assembly. During the puller process, the object being pulled is subjected to balanced force, the puller process is stable, and the pins are prevented from being damaged. Moreover, the puller has a simple structure and is easy to operate.

[0072] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A puller, characterized in that, include: A base having a supporting surface; A top hinge member, wherein the top hinge member is provided with a plurality of hinge lugs; Two drive connecting arm assemblies, the top ends of the two drive connecting arm assemblies are hinged to the hinge lugs, the bottom ends are hinged to the base, and the two drive connecting arm assemblies are arranged in a mirror image. At least two pull-out connecting arm assemblies, each divided into two equal groups, with its top end hinged to a hinge lug and its bottom end provided with a pull-out hook; the two groups of pull-out connecting arm assemblies are arranged in a mirror image. A drive assembly connected to the two drive connecting arm assemblies is used to drive the two drive connecting arm assemblies to move synchronously closer to or further away from each other, so as to synchronously drive the two pull-out connecting arm assemblies to move closer to or further away from the top hinge.

2. The puller according to claim 1, characterized in that, The base has a through hole in the middle, and the lower part of the pull-out connecting arm assembly extends into the through hole.

3. The puller according to claim 1, characterized in that, The drive assembly includes a screw and a handle for driving the screw, wherein the screw is screwed to the same height position of the two drive connecting arm assemblies.

4. The puller according to claim 3, characterized in that, The screw is also provided with a limiting part on the side near the handle, and the limiting part is located on the outside of the drive connecting arm assembly.

5. The puller according to claim 1, characterized in that, The support surface is provided with at least three support protrusions.

6. The puller according to claim 1, characterized in that, The top hinge includes a square body and connecting ears respectively disposed at the center of the four sides of the square body. The top ends of the two drive connecting arm assemblies and the two pull-out connecting arm assemblies are respectively hinged to one of the connecting ears.

7. The puller according to claim 1, characterized in that, The base is also provided with two oppositely arranged base connecting ears, and the bottom ends of the two drive connecting arm assemblies are respectively hinged to one of the base connecting ears.

8. The puller according to any one of claims 1 to 7, characterized in that, The drive connecting arm assembly includes: a transmission arm and a first hinge arm hinged to the top end of the transmission arm, the bottom end of the transmission arm being hinged to the base, the top end of the first hinge arm being hinged to the top hinge member, and the drive assembly driving the transmission arm.

9. The puller according to claim 8, characterized in that, The transmission arm includes: a screw plate portion and a bent plate portion formed by bending the edge of the screw plate portion.

10. The puller according to any one of claims 1 to 7, characterized in that, The pull-out connecting arm assembly includes: a pull-out arm and a second hinge arm hinged to the top end of the pull-out arm, the pull-out hook being disposed at the lower end of the pull-out arm, and the top of the second hinge arm being hinged to the top hinge member.

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