Nut positioning and mounting device

Abstract

The invention relates to the technical field of nut mounting, in particular to a nut positioning and mounting device which comprises a part supporting plate, a moving plate and a first driving assembly. The upper surface of the part supporting plate is a part supporting face, a first nut positioning groove is formed in the first edge of the part supporting face, and a first opening is formed in the side, away from the first edge, of the first nut positioning groove. The moving plate is arranged on the side of the part supporting plate and provided with a second edge facing the first edge, a second nut positioning groove is formed in the upper surface of the second edge, and a second opening is formed in the side, facing the first edge, of the second nut positioning groove; the first driving assembly is connected to the moving plate so as to drive the moving plate to move between the loosening position and the clamping position, and when the moving plate is located at the loosening position, the distance between the first opening and the second opening is a second distance larger than the first distance so that the second nut positioning groove can be separated from the nut.

Description

Technical Field

[0001] The present application relates to the technical field of nut installation, and in particular to a nut positioning and installation device. Background Art

[0002] Bolted connections are often used to connect two separate parts together. For example, after a bolt passes through the holes in the two parts, a nut is tightened on the bolt to connect the two parts together.

[0003] In the prior art, when performing bolt connection, it is generally necessary to position the nut, for example, placing the nut flat in a positioning groove, and then placing the two parts above the nut and aligning the holes on the parts with the nut, and then the bolt passes through the holes of the two parts and extends into the nut, and the bolt is screwed so that the bolt is connected to the nut.

[0004] However, in the process of tightening the bolt, the torque of the bolt is too large, which easily causes the nut to be stuck in the positioning groove, making it difficult to separate the nut from the positioning groove. Summary of the invention

[0005] The present application provides a nut positioning and installation device to facilitate the positioning of the nut before connecting the bolts and the separation of the nut after connecting the bolts.

[0006] The nut positioning and installation device provided in this application includes:

[0007] A parts support plate, wherein the upper surface of the parts support plate is a parts support surface, a first edge of the parts support surface is provided with a first nut positioning groove, and a first opening is provided on a side of the first nut positioning groove away from the first edge;

[0008] A movable plate, the movable plate being arranged at the side of the part support plate, the movable plate having a second edge facing the first edge, a second nut positioning groove being provided on an upper surface of the second edge, and a second opening being provided on a side of the second nut positioning groove facing the first edge; and

[0009] a first drive assembly connected to the moving plate to drive the moving plate to move between a release position and a clamping position,

[0010] Wherein, when the movable plate is located at the clamping position, the distance between the first opening and the second opening is a first distance, so that the first nut positioning groove and the second nut positioning groove can clamp the nut together.

[0011] Wherein, when the movable plate is located at the relaxing position, the distance between the first opening and the second opening is a second distance greater than the first distance, so that the second nut positioning groove is separated from the nut.

[0012] Compared with the prior art, this application has at least the following beneficial effects:

[0013] The nut positioning and installation device of the present application realizes the clamping and loosening of the nut by setting a first nut positioning groove and a second nut positioning groove that can be close to or away from each other, so that when the nut needs to be positioned, the first nut positioning groove and the second nut positioning groove clamp the nut; when the nut needs to be removed, the first nut positioning groove and the second nut positioning groove loosen the nut. This solves the problem that the nut is easily stuck in the positioning groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 An exploded view of a pump according to an embodiment of the present application is shown.

[0015] Figure 2 A schematic diagram of a nut positioning and installation device according to an embodiment of the present application is shown.

[0016] Figure 3 A schematic diagram of a part support plate, a movable plate, a first drive assembly and a first substrate of an embodiment of the present application is shown, wherein the movable plate is located in a clamping position.

[0017] Figure 4 A schematic diagram of a part support plate, a movable plate, a first drive assembly and a first substrate of an embodiment of the present application is shown, wherein the movable plate is located in a relaxed position.

[0018] Figure 5 A top view of a part support plate, a movable plate, a first drive assembly and a first substrate of an embodiment of the present application is shown, wherein the movable plate is located in a clamping position.

[0019] Figure 6 A top view of a part support plate, a movable plate, a first drive assembly and a first substrate of an embodiment of the present application is shown, wherein the movable plate is in a relaxed position.

[0020] Figure 7 A schematic diagram of a part support plate, a movable plate, a first drive assembly, a first substrate and a part clamping plate of an embodiment of the present application is shown.

[0021] Figure 8 A schematic diagram of the lower portion of the part clamping plate of an embodiment of the present application is shown.

[0022] Fig. 9 A top view of a part support plate, a movable plate, a first drive assembly, a first substrate and a part pressing plate of an embodiment of the present application is shown.

[0023] Fig.10 A schematic diagram showing the installation of a pump on a nut positioning installation device according to an embodiment of the present application is shown.

[0024] Reference numerals:

[0025] 100, pump; 110, pump body; 120, motor; 130, bolt; 131, screw rod; 132, nut; 140, nut;

[0026] 200, a first substrate;

[0027] 300, positioning assembly; 310, part support plate; 311, part support surface; 312, first edge; 3121, first nut positioning groove; 3122, first opening; 313, left side plate; 314, middle plate; 315, right side plate; 320, moving plate; 321, second edge; 3211, second nut positioning groove; 3212, second opening; 322, part limiting portion; 330, first driving assembly; 340, mounting plate; 350, first guide rod; 360, fixing seat;

[0028] 400. a second substrate;

[0029] 500, lifting platform; 510, through hole;

[0030] 600, part clamping plate; 610, bolt positioning groove; 620, bolt limiting ring; 630, part clamping portion;

[0031] 700, second drive assembly;

[0032] 800. A second guide rod. DETAILED DESCRIPTION

[0033] The technical solution of the present application is further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only the parts related to the present application are shown in the accompanying drawings, rather than all of them.

[0034] Some directional words are defined in the present application. Unless otherwise stated, the directional words used, such as "up", "down", "left", "right", "inside" and "outside", are used for ease of understanding and therefore do not constitute a limitation on the scope of protection of the present application.

[0035] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] like Figure 1 As shown, the pump 100 includes a pump body 110 and a motor 120, and the pump body 110 and the motor 120 are connected by a bolt 130 and a nut 140. Specifically, the screw 131 of the bolt 130 successively passes through the motor 120 and the pump body 110 and is connected to the nut 140, so that the pump body 110 and the motor 120 are clamped between the nut 140 and the nut 132. In the embodiment of the present application, the nut 140 is a hexagonal nut 140.

[0038] It should be noted that although the embodiment of the present application only takes the pump 100 as an example and illustrates that the pump body 110 and the motor 120 can be fixed by bolts 130, those skilled in the art can understand that the bolt 130 connection can also be applied to other scenarios, as long as two independent parts can be connected by bolts 130.

[0039] like Figure 1 As shown, in the process of connecting the pump body 110 and the motor 120, the nut 140 is often placed flat in the positioning groove first, and then the pump body 110 is placed above the nut 140 and the hole on the pump body 110 is aligned with the nut 140, and then the motor 120 is placed above the pump body 110 and the hole on the motor 120 is aligned with the hole on the pump body 110, and finally the bolt 130 is passed through the motor 120 and the pump body 110 from top to bottom and screwed into the nut 140.

[0040] However, after the pump body 110 and the motor 120 are connected, the nut 140 will be stuck in the positioning groove due to the torque of the bolt 130, and the entire pump 100 cannot be removed from the positioning groove.

[0041] In order to solve the above problems, an embodiment of the present application provides a nut positioning and installation device. For each nut 140, the clamping and loosening of the nut 140 are achieved by a first nut positioning groove and a second nut positioning groove that can be close to or away from each other, so that when the nut 140 needs to be positioned, the first nut positioning groove and the second nut positioning groove clamp the nut 140, and when the nut 140 needs to be removed, the first nut positioning groove and the second nut positioning groove loosen the nut 140, thereby solving the problem that the nut 140 is easily stuck in the positioning groove.

[0042] The structure of the nut positioning and installation device is described in detail below.

[0043] like Figure 2 As shown, the nut positioning and installation device includes a first substrate 200 and a positioning assembly 300 installed on the upper surface of the first substrate 200. The positioning assembly 300 is used to position the nut 140, and in particular, can clamp and loosen the nut 140.

[0044] like Figure 3 As shown, the positioning assembly 300 includes a part support plate 310, a mobile plate 320 and a first drive assembly 330. The number of the mobile plates 320 can be one or more, and the number of the first drive assemblies 330 matches the number of the mobile plates 320. In the embodiment of the present application, the number of the mobile plates 320 is two for example. Specifically, the two mobile plates 320 are respectively arranged on opposite sides of the part support plate 310. Each mobile plate 320 is connected to a first drive assembly 330.

[0045] like Figure 3 As shown, the part support plate 310 is fixedly arranged relative to the first substrate 200, and the upper surface of the part support plate 310 is the part support surface 311. Specifically, in the embodiment of the present application, the part support surface 311 is used to support the lower end of the pump body 110, that is, when the pump body 110 and the motor 120 are connected, the lower end of the pump body 110 is placed on the part support surface 311.

[0046] like Figure 3 As shown, the first edge 312 of the part support surface 311 is provided with a first nut positioning groove 3121. Figure 3 In the embodiment, both the left and right sides of the part support surface 311 are first edges 312, that is, the number of the first edges 312 is two. However, in other embodiments, the number of the first edges 312 can be one or more than three. In addition, the first edges 312 can also be located on the upper side and / or the lower side of the part support surface 311.

[0047] like Figure 3 As shown, for each first edge 312, the number of the first nut positioning grooves 3121 can be one or more. Figure 3 In the embodiment, each first edge 312 has two first nut positioning grooves 3121. In addition, the number of first nut positioning grooves 3121 on different first edges 312 can be the same or different. For example, the first edge 312 on the left has two first nut positioning grooves 3121, and the first edge 312 on the right has one first nut positioning groove 3121.

[0048] like Figure 3 As shown, in the embodiment of the present application, a first opening 3122 is provided on a side of the first nut positioning groove 3121 away from the first edge 312. For example, for the first edge 312 on the right side, the first opening 3122 of the first nut positioning groove 3121 is located on the right side of the first nut positioning groove 3121.

[0049] It should be noted that the shape of the first nut positioning groove 3121 can be the shape of half of the nut 140, so that when the nut 140 is placed in the first nut positioning groove 3121, the nut 140 can be positioned by the first nut positioning groove 3121. That is, the shape of the first nut positioning groove 3121 can be half of a regular hexagon. In addition, the shape of the first nut positioning groove 3121 can also be smaller than the shape of half of the nut 140. That is, the shape of the first nut positioning groove 3121 can be smaller than half of a regular hexagon.

[0050] like Figure 3 As shown, in the embodiment of the present application, the part support plate 310 includes a left side plate 313, a middle plate 314 and a right side plate 315 connected in sequence from left to right, the left edge of the left side plate 313 is the first edge 312, and the right edge of the right side plate 315 is the first edge 312. The left edge of the left side plate 313 and the right edge of the right side plate 315 are both provided with a first nut positioning groove 3121.

[0051] In addition, grooves are provided on the middle plate 314 and the right side plate 315, and the grooves are used to accommodate the protrusions at the lower end of the pump body 110, so that when the pump body 110 is placed on the upper surface of the part support plate 310, it can be placed stably on the part support surface 311 without being skewed.

[0052] like Figure 3 As shown, the moving plate 320 is arranged on the side of the part support plate 310. Figure 3 In the figure, the left movable plate 320 is located on the left side of the part support plate 310, and the right movable plate 320 is located on the right side of the part support plate 310.

[0053] like Figure 3As shown, the moving plate 320 has a second edge 321 facing the first edge 312. Specifically, for the moving plate 320 on the left, the second edge 321 is located on the right side of the moving plate 320. For the moving plate 320 on the right, the second edge 321 is located on the left side of the moving plate 320.

[0054] like Figure 3 As shown, a second nut positioning groove 3211 is formed on the upper surface of the second edge 321. The number of the second nut positioning grooves 3211 can be one or more, and in particular, the number of the second nut positioning grooves 3211 on the second edge 321 can match the number of the first nut positioning grooves 3121 on the first edge 312 corresponding to the second edge 321. For example, when the number of the first nut positioning grooves 3121 on the first edge 312 is two, the number of the second nut positioning grooves 3211 on the second edge 321 is also two.

[0055] like Figure 3 As shown, the second nut positioning groove 3211 is provided with a second opening 3212 on one side facing the first edge 312. Specifically, for the left movable plate 320, the second opening 3212 of the second nut positioning groove 3211 is located on the right side. For the right movable plate 320, the second opening 3212 of the second nut positioning groove 3211 is located on the left side. Thus, for the left movable plate 320 and the first edge 312 on the left side of the part support plate 310, the first opening 3122 and the second opening 3212 are arranged opposite to each other.

[0056] like Figure 3 As shown, the first driving assembly 330 is connected to the moving plate 320 to drive the moving plate 320 to move between the relaxing position and the clamping position.

[0057] like Figure 3 and Figure 5 As shown, when the movable plate 320 is located at the clamping position, the distance between the first opening 3122 and the second opening 3212 is a first distance, so that the first nut positioning groove 3121 and the second nut positioning groove 3211 can clamp the nut 140 together.

[0058] Specifically, in the embodiment of the present application, the shapes of the first nut positioning groove 3121 and the second nut positioning groove 3211 are both half a regular hexagon, so when the movable plate 320 is in the clamping position, the first distance is zero, and the first nut positioning groove 3121 and the second nut positioning groove 3211 together form a complete regular hexagon. However, when one of the first nut positioning groove 3121 and the second nut positioning groove 3211 is smaller than half a regular hexagon, the first distance can be greater than zero.

[0059] like Figure 4 and Figure 6As shown, when the movable plate 320 is located at the relaxed position, the distance between the first opening 3122 and the second opening 3212 is a second distance greater than the first distance, so that the second nut positioning groove 3211 is separated from the nut 140 .

[0060] As an example of the first driving assembly 330, the first driving assembly 330 may be a cylinder, the piston rod of which is connected to the moving plate 320, thereby driving the moving plate 320 to move back and forth linearly. However, the first driving assembly 330 may also be other structures, as long as it can drive the moving plate 320 to move between the loose position and the clamping position.

[0061] To summarize, the nut positioning and installation device of the embodiment of the present application realizes the clamping and loosening of the nut 140 by setting a first nut positioning groove 3121 and a second nut positioning groove 3211 that can be close to or far away from each other, so that when the nut 140 needs to be positioned, the first nut positioning groove 3121 and the second nut positioning groove 3211 clamp the nut 140, and when the nut 140 needs to be removed, the first nut positioning groove 3121 and the second nut positioning groove 3211 loosen the nut 140, thereby solving the problem that the nut 140 is easily stuck in the positioning groove.

[0062] like Figure 3 As shown, the positioning assembly 300 may further include a mounting plate 340, which is fixedly disposed on the upper surface of the first substrate 200, and the part support plate 310 and the moving plate 320 are located on the upper surface of the mounting plate 340. The first driving assembly 330 is fixedly disposed on the first substrate 200, and the piston rod of the first driving assembly 330 is located above the mounting plate 340. Thus, the first driving assembly 330 drives the moving plate 320 to move on the mounting plate 340.

[0063] like Figure 3 As shown, the nut positioning and mounting device may further include a first guide rod 350, which is fixedly arranged relative to the part support plate 310. Specifically, one end of the first guide rod 350 may be fixedly arranged on the mounting plate 340 through a fixing seat 360, and the other end of the first guide rod 350 is located on the part support plate 310. The movable plate 320 is penetrated on the first guide rod 350, so that it can move on the first guide rod 350. The first guide rod 350 guides the movement of the movable plate 320. In addition, as an example, two first guide rods 350 are arranged on each movable plate 320.

[0064] like Figure 3As shown, the upper surface of the movable plate 320 is provided with a part stopper 322. When the movable plate 320 is in the clamping position, the part stopper 322 and the part support surface 311 together form a part stopper groove. Specifically, in the embodiment of the present application, the shape of the part stopper 322 can be adapted to the outer shape of the lower end of the pump body 110, so that when the movable plate 320 is in the clamping position, the part stopper plate can stop and clamp the lower end of the pump body 110.

[0065] like Figure 2 As shown, the nut positioning and installation device further includes a second base plate 400, and the first base plate 200 and the second base plate 400 are slidably connected via a horizontal slide rail. Thus, the position of the positioning assembly 300 can be adjusted in the horizontal direction, so as to facilitate placing the pump body 110 and the motor 120 on the positioning assembly 300. In particular, when there is a lifting platform 500 described later, by moving the first base plate 200, the positioning assembly 300 and the lifting platform 500 can be misaligned, so as to facilitate placing the pump body 110 and the motor 120 on the positioning assembly 300.

[0066] In addition, a positioning block (not shown) may be provided on the second substrate 400 , and the positioning block is used to position the first substrate 200 . For example, when the first substrate 200 abuts against the positioning block, the positioning assembly 300 is located below the lifting platform 500 and aligned with the lifting platform 500 .

[0067] like Figure 2 As shown, the nut positioning and installation device also includes a lifting platform 500, a part pressing plate 600 and a second drive assembly 700. The lifting platform 500 is located above the part support surface 311, and the lifting platform 500 can be raised and lowered relative to the part support surface 311. The part pressing plate 600 is arranged on the lower surface of the lifting platform 500. The second drive assembly 700 is connected to the lifting platform 500 so that the lifting platform 500 has a downward pressing position and an upward lifting position. When the lifting platform 500 is in the downward pressing position, the part pressing plate 600 presses the part downward on the part support surface 311. When the lifting platform 500 is in the upward lifting position, the part pressing plate 600 is separated from the part. Therefore, by setting a lifting platform 500 that can be raised and lowered, the part pressing plate 600 can press or loosen the part, so as to facilitate tightening the bolt 130.

[0068] like Figure 2 As shown, the lifting platform 500 has a through hole 510 that passes through from top to bottom, and the part clamping plate 600 is arranged around the through hole 510. When the lifting platform 500 is in the downward pressing position, the hole on the part is located in the through hole 510, so that the bolt 130 can be put into the part through the through hole 510, and the bolt 130 is tightened in the through hole 510, for example, a screwdriver is connected to the nut 132 of the bolt 130 from the through hole 510, and then the bolt 130 is screwed using the screwdriver.

[0069] like Figure 2 As shown, a longitudinally extending second guide rod 800 is disposed on the lifting platform 500 , the lower end of the second guide rod 800 is penetrated through the second base plate 400 , and the second driving assembly 700 is fixedly disposed on the second base plate 400 .

[0070] like Figure 7 and Figure 8 As shown, a bolt positioning groove 610 is provided on the part pressing plate 600. Fig. 9 As shown, the bolt positioning groove 610 is aligned with the first nut positioning groove 3121, so that when the lifting platform 500 is in the pressing position, the bolt positioning groove 610 is aligned with the hole on the part.

[0071] like Figure 7 and Figure 8 As shown, the part pressing plate 600 includes a bolt limiting ring 620 and a part pressing portion 630. The bolt limiting ring 620 is arranged on the lower surface of the lifting platform 500, and the bolt positioning groove 610 is located on the bolt limiting ring 620. The part pressing portion 630 is arranged on the lower surface of the bolt limiting ring 620.

[0072] like Fig.10 As shown, when the movable plate 320 is in the clamping position and the lifting platform 500 is in the pressing position, the part stopper 322 is clamped on the side of the lower end of the pump body 110, and the part pressing part 630 is pressed downward on the upper surface of the motor 120, thereby fixing the pump body 110 and the motor 120 to each other. Fig.10 As shown, the bolt 130 can pass through the motor 120 and the pump body 110 from the bolt positioning groove 610 and then be connected to the nut 140, so as to connect the bolt 130 with the nut 140.

[0073] After the connection between the bolts 130 and the nuts 140 is completed, the lifting platform 500 can be moved upward to the lifting position, and the moving plate 320 can be moved outward to the relaxing position, so that the assembled pump 100 can be removed from the parts support plate 310.

[0074] Although the present application has been described in detail above by means of general description, specific implementation methods and experiments, it is obvious to those skilled in the art that some modifications or improvements may be made to the present application. Therefore, these modifications or improvements made without departing from the spirit of the present application are within the scope of protection claimed in the present application.

Claims

1. A nut positioning and installation device, characterized in that: include: A part support plate (310), wherein the upper surface of the part support plate (310) is a part support surface (311), a first edge (312) of the part support surface (311) is provided with a first nut positioning groove (3121), and a first opening (3122) is provided on a side of the first nut positioning groove (3121) away from the first edge (312); a movable plate (320), the movable plate (320) being arranged on the side of the part support plate (310), the movable plate (320) having a second edge (321) facing the first edge (312), a second nut positioning groove (3211) being provided on the upper surface of the second edge (321), and a second opening (3212) being provided on the side of the second nut positioning groove (3211) facing the first edge (312); as well as a first driving assembly (330), the first driving assembly (330) being connected to the moving plate (320) to drive the moving plate (320) to move between a relaxing position and a clamping position, Wherein, when the movable plate (320) is located at the clamping position, the distance between the first opening (3122) and the second opening (3212) is a first distance, so that the first nut positioning groove (3121) and the second nut positioning groove (3211) can clamp the nut (140) together. Wherein, when the movable plate (320) is located at the relaxed position, the distance between the first opening (3122) and the second opening (3212) is a second distance greater than the first distance, so that the second nut positioning groove (3211) is separated from the nut (140).

2. The nut positioning and installation device according to claim 1, characterized in that: The shape of the first nut positioning groove (3121) is smaller than or equal to half a regular hexagon; and / or The second nut (140) is positioned in a shape that is smaller than or equal to half a regular hexagon.

3. The nut positioning and installation device according to claim 1, characterized in that: The nut positioning and installation device also includes: A first guide rod (350), wherein the first guide rod (350) is fixedly arranged relative to the part support plate (310), and the movable plate (320) is passed through the first guide rod (350).

4. The nut positioning and installation device according to claim 1, characterized in that: The number of the movable plates (320) is two, and the two movable plates (320) are respectively arranged on two opposite sides of the part support plate (310).

5. The nut positioning and installation device according to claim 1 or 4, characterized in that: The upper surface of the movable plate (320) is provided with a part limiting portion (322); when the movable plate (320) is located at the clamping position, the part limiting portion (322) and the part supporting surface (311) together form a part limiting groove.

6. The nut positioning and installation device according to claim 1, characterized in that: The nut positioning and installation device also includes: A first substrate (200), the part support plate (310), the moving plate (320) and the driving assembly are all arranged on the first substrate (200); and The second substrate (400) is connected in a sliding manner to the first substrate (200) and the second substrate (400) via a horizontal slide rail.

7. The nut positioning and installation device according to any one of claims 1 to 6, characterized in that: The nut positioning and installation device also includes: A lifting platform (500), the lifting platform (500) is located above the part support surface (311), the lifting platform (500) can be raised and lowered relative to the part support surface (311), and the lifting platform (500) has a through hole (510) penetrating from top to bottom; A parts pressing plate (600), the parts pressing plate (600) being arranged on the lower surface of the lifting platform (500) and around the through hole (510); and a second driving assembly (700), wherein the second driving assembly (700) is connected to the lifting platform (500) so that the lifting platform (500) has a downward pressing position and an upward lifting position, Wherein, when the lifting platform (500) is located at the pressing position, the part pressing plate (600) presses the part downward onto the part supporting surface (311), and the hole on the part is located within the through hole (510).

8. The nut positioning and installation device according to claim 7, characterized in that: The part pressing plate (600) is provided with a bolt positioning groove (610), and when the lifting platform (500) is located at the pressing position, the bolt positioning groove (610) is aligned with the hole on the part.

9. The nut positioning and installation device according to claim 8, characterized in that: The parts pressing plate (600) comprises: a bolt limiting ring (620), wherein the bolt limiting ring (620) is arranged on the lower surface of the lifting platform (500), and the bolt positioning groove (610) is located on the bolt limiting ring (620); and A parts pressing portion (630), wherein the parts pressing portion (630) is arranged on the lower surface of the bolt limiting ring (620).

10. The nut positioning and installation device according to claim 7, characterized in that: The lifting platform (500) is provided with a second guide rod (800) extending longitudinally, the lower end of the second guide rod (800) is inserted into the second base plate (400), and the second driving assembly (700) is fixedly arranged on the second base plate (400).

Images