Visual inspection tightening device and method

Abstract

The invention provides a visual inspection tightening device and method.The visual inspection tightening device comprises a detection station, a tightening station and a conveying device, and the detection station and the tightening station are connected through the conveying device; the tightening station comprises a mounting frame and a tightening mechanism, and the detection station comprises a clamping mechanism and a supporting frame; the clamping mechanism comprises a shell, a clamping jaw assembly and a first driving mechanism installed on the shell, the clamping jaw assembly is installed on the shell in a sliding mode, the first driving mechanism is used for driving the clamping jaw assembly to be opened and closed, and a detection mechanism is installed on the shell. A first driving device for driving the shell to vertically move is mounted on the supporting frame; the problems that in the prior art, if the sequence and the direction of the bearing bush cover are wrong, poor contact between the crankshaft and the bearing bush cover as well as between the crankshaft and the bearing seat is directly caused, local stress concentration is generated, and the coaxiality of the crankshaft is affected can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of engine assembly, and in particular to a visual inspection tightening device and method. Background Art

[0002] The assembly of the engine cylinder is the core link of the engine assembly, involving precise matching and strict process requirements. Among them, the installation of the cylinder crankshaft bearing seat is the main process of the engine cylinder assembly; in the prior art, the support and limitation of the crankshaft are achieved through the matching of the bearing seat, the bearing bush and the bearing (bearing) cover; among them, the bearing bush is divided into an upper bush and a lower bush; the upper bush is embedded in the bearing seat of the cylinder body, and the lower bush is embedded in the bearing (bearing) cover; after the crankshaft is placed on the bearing seat, the bearing (bearing) cover is connected to the bearing seat by bolts, and a complete circular bearing hole is formed between the bearing seat and the bearing (bearing) cover to constrain the radial and axial movement of the crankshaft; the bearing bush is located between the circular bearing hole and the crankshaft, reducing the friction between the crankshaft journal and the bearing seat while bearing the alternating load when the crankshaft rotates.

[0003] In order to improve work efficiency, the prior art often uses a crankshaft automatic assembly device to place the crankshaft on the bearing seat. However, the control adopted by the automatic assembly device is too complicated, which significantly increases the probability of failure and is particularly prone to positioning deviations. In order to solve the problems existing in the prior art, the invention with announcement number CN110919323B discloses a device for quickly positioning and installing a crankshaft and a machine body and an assembly method thereof (hereinafter referred to as prior art 1), including a crankshaft positioning device and a crankshaft clamping and mounting device; the crankshaft positioning device includes a machine body main bearing seat clamping assembly and a crankshaft positioning expansion assembly; the crankshaft clamping and mounting device includes a crankshaft transfer guide slider assembly and a clamping cylinder.

[0004] The rapid positioning and installation device in the prior art has the advantages of accurate, reliable and repeatable positioning and installation. However, during the installation of the bearing (wear) cover and the bearing seat, the installation order and installation position of the bearing (wear) cover need to be matched one by one with the seat holes on the cylinder body. If the order and direction of the bearing (wear) cover are installed incorrectly, it will directly lead to poor contact between the crankshaft and the bearing (wear) cover and the bearing seat, resulting in local stress concentration, affecting the coaxiality of the crankshaft and may also block the lubricating oil channel on the cylinder body, causing the crankshaft and bearings to overheat, wear or even burn due to lack of oil. Summary of the invention

[0005] The purpose of the present invention is to provide a visual inspection tightening device and method, which, in actual use, can solve the problem in the prior art that if the order and direction of the bearing cap are installed incorrectly, it will directly lead to poor contact between the crankshaft and the bearing cap and the bearing seat, causing local stress concentration and affecting the coaxiality of the crankshaft.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A visual inspection tightening device, characterized in that it comprises an inspection station, a tightening station and a conveying device, wherein the inspection station and the tightening station are connected via the conveying device;

[0008] The tightening station includes a mounting frame and a tightening mechanism, and the detection station includes a clamping mechanism and a support frame; the clamping mechanism includes a housing, a clamping jaw assembly and a first driving mechanism installed on the housing, the clamping jaw assembly is slidably installed on the housing, the first driving mechanism is used to drive the clamping jaw assembly to open and close, a detection mechanism is installed on the housing, and a first driving device for driving the housing to move vertically is installed on the support frame;

[0009] The clamping jaw assembly comprises two clamping jaw bodies symmetrically mounted on the left and right sides of the shell.

[0010] Preferably, the first driving mechanism includes a telescopic device, a driving block and a guide block, the telescopic device is installed on the shell and is used to drive the driving block to move, the guide block is connected to the clamp body and a guide surface is provided on the guide block, and the driving block is slidably connected to the guide block via the guide surface.

[0011] Preferably, a clamping slot is provided on the clamping jaw body.

[0012] Preferably, a positioning frame is installed on the mounting frame, and a slot is provided on the positioning frame.

[0013] Preferably, the tightening mechanism includes a moving platform, a connecting frame, a second driving mechanism, a guide rail and a rotating assembly rotatably mounted on the connecting frame, the second driving mechanism and the guide rail are both mounted on the connecting frame; the connecting frame is connected to the moving platform, a second driving device for driving the moving platform to move is mounted on the mounting frame, and a third driving device for driving the connecting frame to move is provided on the moving platform; a first driving motor for driving the rotating rod to rotate is mounted on the connecting frame, and the guide rail is used to cooperate with the rotating assembly to move the fixing part to the bottom of the tightening mechanism.

[0014] Preferably, the rotating assembly comprises a rotating rod and an opening and closing member symmetrically hinged on a movable end of the rotating rod, and the opening and closing member is provided with a first placement groove.

[0015] Preferably, the opening and closing member is provided with a slot communicating with the first placement slot.

[0016] A visual inspection tightening method, including a visual inspection tightening device, is specifically a method for visually inspecting and installing a bearing shoe cover, comprising the following steps:

[0017] Step 1: The first driving device drives the clamping mechanism to move downward to clamp the bearing shoe cover to be installed;

[0018] Step 2: Identify the mark on the bearing shoe cover by the detection mechanism installed on the clamping mechanism to determine whether the direction and number of the bearing shoe cover are correct;

[0019] Step 3: Under the drive of the first driving device, the clamping mechanism moves the bearing shoe cover with the identification mark to the bearing seat installed in the engine cylinder body;

[0020] Step 4: Identify through a detection mechanism whether the first mounting hole provided on the bearing shoe cover is aligned with the second mounting hole provided on the bearing seat;

[0021] Step 5: Fix the bearing shoe cover on the bearing seat by the tightening mechanism. Compared with the prior art, the present invention has the following beneficial effects:

[0022] After the clamping jaw assembly clamps the bearing cap to be installed, the detection mechanism arranged on the housing can respectively identify the marks on each bearing cap and judge whether the installation sequence and installation direction of the clamped bearing cap are correct. If there is a bearing cap with a wrong installation sequence or direction, the detection mechanism arranged corresponding to the wrongly installed bearing cap will sound an alarm to remind the user to adjust the position and direction of the bearing cap.

[0023] After the serial number and direction of the bearing cover to be installed are identified, the first drive device drives the clamping jaw assembly to move the bearing cover to above the bearing seat arranged in the engine cylinder block. At this time, the detection mechanism is used to identify whether the first mounting hole arranged on the bearing cover is aligned with the second mounting hole arranged on the bearing seat. If the first mounting hole is aligned with the second mounting hole, the bearing cover is placed on the bearing seat. If there is a deviation between the first mounting hole and the second mounting hole, the detection mechanism issues an alarm to notify the user to adjust the position of the bearing cover until the first mounting hole is aligned with the second mounting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the stereoscopic structure of the present invention.

[0026] Figure 2 It is a structural schematic diagram of the present invention.

[0027] Figure 3 It is a three-dimensional diagram of the tightening mechanism in the present invention.

[0028] Figure 4 It is a structural schematic diagram of the clamping mechanism in the present invention.

[0029] Figure 5 It is a structural schematic diagram of the clamping mechanism in the present invention.

[0030] Figure 6 It is a structural schematic diagram of the opening and closing member and the first placement groove in the first embodiment of the present invention.

[0031] Figure 7 It is a schematic diagram of the structure of the opening and closing member and the blocking piece in the second embodiment of the present invention.

[0032] Figure 8 Schematic diagram of the connection relationship between the opening and closing member and the blocking piece in the second embodiment of the present invention.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] 1- tightening station, 2- clamping mechanism, 3- mounting frame, 4- tightening mechanism, 5- detection mechanism, 6- detection station, 7- conveying device, 11- positioning frame, 21- supporting frame, 22- shell, 23- clamping claw assembly, 24- first driving mechanism, 25- first driving device, 41- connecting frame, 42- second driving mechanism, 43- guide rail, 44- rotating assembly, 45- second driving device, 46- third driving device, 111- moving platform, 231- clamping claw body, 232- Card slot, 241- telescopic device, 242- driving block, 243- guide block, 421- fourth driving device, 422- slide plate, 423- first driving motor, 424- second driving motor, 441- rotating rod, 442- opening and closing member, 443- first placement slot, 444- slotting, 445- bolt arbor, 446- second placement slot, 447- blocking plate, 448- nut slot, 449- giving way slot, 450- nut arbor, 1131- pressure rod, 1132- fixing block. DETAILED DESCRIPTION

[0035] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0036] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, and 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 the embodiments of the present invention can be understood according to specific circumstances.

[0039] In the embodiments of the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being 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 the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] The disclosure below provides many different embodiments or examples to implement different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present invention. In addition, the embodiments of the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0041] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0042] Embodiment 1

[0043] See also Figure 1-Figure 6 , this embodiment discloses a visual inspection and tightening device for visual inspection and installation and fixing of a bearing shoe cover, comprising an inspection station 6, a tightening station 1 and a conveying device 7, wherein the inspection station 6 and the tightening station 1 are connected via the conveying device 7;

[0044] The tightening station 1 includes a mounting frame 3 and a tightening mechanism 4, and the detection station 6 includes a clamping mechanism 2 and a support frame 21; the clamping mechanism 2 includes a housing 22, a clamping jaw assembly 23 and a first driving mechanism 24 installed on the housing 22, the clamping jaw assembly 23 is slidably installed on the housing 22, the first driving mechanism 24 is used to drive the clamping jaw assembly 23 to open and close, the housing 22 is installed with a detection mechanism 5, and the support frame 21 is installed with a first driving device 25 for driving the housing 22 to move vertically;

[0045] The clamping jaw assembly 23 includes two clamping jaw bodies 231 symmetrically mounted on the left and right sides of the housing 22 .

[0046] In this embodiment, there are several clamping jaw assemblies 23, and the number of the clamping jaw assemblies 23 is the same as the number of bearing bushings to be installed; in actual use, after the bearing bushings to be installed are moved to the bottom of the clamping jaw assemblies 23 by the conveying device 7, the first driving device 25 drives the shell 22 to move downward, and then the first driving mechanism 24 installed on the shell 22 can simultaneously drive all the clamping jaw assemblies 23 to open or close, so that all the bearing bushings to be installed can be clamped at the same time, thereby improving the installation efficiency of the bearing bushings; there are several detection mechanisms 5, and the detection mechanisms 5 are arranged one by one with the clamping jaw assemblies 23 and installed at the upper shell 22 of the clamping jaw assemblies 23; when the clamping jaw assemblies 23 clamp the bearing bushings to be installed, The detection mechanism 5 arranged on the housing 22 can respectively identify the marks on each bearing shoe cover, and judge whether the installation order and installation direction of the clamped bearing shoe cover are correct. If there is a bearing shoe cover with a wrong installation order or direction, the detection mechanism 5 arranged corresponding to the wrongly installed bearing shoe cover will sound an alarm to remind the user to adjust the position and direction of the bearing shoe cover; by setting the detection mechanism 5 corresponding to the clamping jaw assembly 23 one by one, the marks on the bearing shoe cover can be timely identified during the clamping of the bearing shoe cover, so as to avoid the problems such as poor contact between the crankshaft, the bearing cover and the bearing seat, local stress concentration, influence on the coaxiality of the crankshaft, blocking the lubricating oil channel on the cylinder body, overheating, wear and even ablation of the crankshaft and the bearing due to lack of oil, etc. after the bearing shoe cover is installed incorrectly;

[0047] After the serial number and direction of the bearing cover to be installed are identified, the first driving device 25 drives the housing to drive the clamping jaw assembly 23 and the bearing cover to be installed to move upward a distance, so that the engine cylinder body can be moved to the bottom of the clamping jaw assembly 23 through the conveying device 7; then, driven by the first driving device 25, the clamping jaw assembly 23 can move the bearing cover to the top of the bearing seat provided in the engine cylinder body, and at this time, the detection mechanism 5 is used to identify whether the first mounting hole provided on the bearing cover is aligned with the second mounting hole provided on the bearing seat, if the first mounting hole is aligned with the second mounting hole, the bearing cover is placed on the bearing seat, and if there is a deviation between the first mounting hole and the second mounting hole, the detection mechanism 5 issues an alarm to notify the user to adjust the position of the bearing cover until the first mounting hole and the second mounting hole are aligned;

[0048] The tightening mechanism 4 can be used to fix the bearing shoe cover placed on the bearing seat on the bearing seat to complete the engine cylinder crankshaft bearing seat installation process; in this embodiment, the detection mechanism 5 is a conventional imaging contrast detection device in the prior art, and the conveying device 7 is a conventional transmission device in the prior art. The specific structure and detection principle of the imaging contrast detection equipment and the conveying device 7 will not be explained one by one here.

[0049] Among them, the first driving mechanism 24 includes a telescopic device 241, a driving block 242 and a guide block 243. The telescopic device 241 is installed on the shell 22 and is used to drive the driving block 242 to move. The guide block 243 is connected to the clamp body 231 and a guide surface is provided on the guide block 243. The driving block 242 is slidably connected to the guide block 243 through the guide surface. A guide groove is arranged on the guide surface, and a slider is symmetrically connected to the driving block 242, and the slider is slidably connected to the guide groove; when the first driving mechanism 24 drives the driving block 242 to move upward, the clamping claw bodies 231 arranged on both sides of the driving block 242 move toward each other under the cooperation of the driving block 242 and the guiding block 243 to clamp the bearing cover; after the bearing cover is placed on the bearing seat, when the first driving mechanism 24 drives the driving block 242 to move downward, the clamping claw bodies 231 arranged on both sides of the driving block 242 move away from each other under the cooperation of the driving block 242 and the guiding block 243, and after the bearing cover is released, the clamping claw assembly 23 moves outside the engine cylinder body and returns to its original position under the drive of the first driving device 25; in this embodiment, the first driving mechanism 24 and the first driving device 25 are both conventional telescopic mechanisms in the prior art, and their structures and functions are not explained one by one here.

[0050] Further optimization, the clamp body 231 is provided with a slot 232. By providing the slot 232 on the clamp body 231, the contact area between the clamp body 231 and the bearing shoe cover can be increased, thereby improving the stability of the clamp body 231 when clamping the bearing shoe cover.

[0051] Further optimization, a positioning frame 11 is installed on the mounting frame 3, and a slot is provided on the positioning frame 11. The slot corresponds to the opening provided on the engine cylinder block, and the bearing seat and the bearing shoe cover are both provided in the opening. During the process of the tightening mechanism 4 connecting the bearing seat and the bearing shoe cover, by observing whether the slot is aligned with the opening provided on the engine cylinder block, it is possible to intuitively identify whether the engine cylinder block is located in the working area of ​​the tightening mechanism 4, thereby avoiding the problem of difficulty in the tightening mechanism working or thread damage due to misalignment during the movement of the engine cylinder block.

[0052] Further optimized, the tightening mechanism 4 includes a moving platform 111, a connecting frame 41, a second driving mechanism 42, a guide rail 43 and a rotating assembly 44 rotatably mounted on the connecting frame 41, the second driving mechanism 42 and the guide rail 43 are both mounted on the connecting frame 41; the connecting frame 41 is connected to the moving platform 111, and a second driving device 45 for driving the moving platform 111 to move is installed on the mounting frame 3, and a third driving device 46 for driving the connecting frame 41 to move is provided on the moving platform 111; a first driving motor 423 for driving the rotating rod 441 to rotate is installed on the connecting frame 41, and the guide rail 43 is used to cooperate with the rotating assembly 44 to move the fixing part to the bottom of the tightening mechanism 4. The guide rail 43 is used to carry out material feeding and guiding of the fixing part. In the present embodiment, the fixing part is a locking bolt, and a limiting groove is arranged on the locking bolt. When the bearing shoe cover needs to be installed on the bearing seat, the rotating assembly 44 is rotated to a position corresponding to the outlet of the guide rail 43. After the fixing part falls down after being guided by the guide rail 43, it moves onto the rotating assembly 44, and the rotating assembly 44 is rotated to the lower side of the output end of the second driving mechanism 42. After the output end of the second driving mechanism 42 cooperates with the upper limit groove arranged on the locking bolt, the second driving mechanism 42 can tighten the locking bolt on the bearing seat, so that the bearing seat and the shaft The bearing cover is connected by the locking bolts; in the present embodiment, the second driving device 45 is used to drive the movable platform 111 to move along the direction of the engine cylinder conveying, and the third driving device 46 is used to drive the connecting frame 41 to move in a direction perpendicular to the direction of the engine cylinder conveying; in the present embodiment, the second driving device 45 and the third driving device 46 are both conventional driving mechanisms in the prior art, and the position of the connecting frame 41 can be adjusted by the cooperation of the second driving device 45 and the third driving device 46, and the structures and functions of the second driving device 45 and the third driving device 46 are not explained one by one here.

[0053] The rotating assembly 44 includes a rotating rod 441 and an opening and closing member 442 symmetrically hinged on the movable end of the rotating rod 441 , and a first placement groove 443 is provided on the opening and closing member 442 . In this embodiment, the output end of the second driving mechanism 42 is connected to a bolt cutter rod 445 for cooperating with a limiting groove provided on the locking bolt, and the bolt cutter rod 445 is used to cooperate with the limiting groove provided on the locking bolt; when the two opening and closing pieces 442 are in contact, the first placement groove 443 provided on the two opening and closing pieces 442 forms a first stepped groove structure connected to the outside world; after the locking bolt moves into the first stepped groove structure under the guidance of the guide rail 43, the first driving motor 423 drives the rotating rod 441 and the opening and closing piece 442 to move to a position corresponding to the bolt cutter rod 445, and after the second driving mechanism 42 moves downward to contact the locking bolt, the locking bolt moves downward under the drive of the second driving mechanism 42; the opening and closing piece 442 rotates in a direction away from the bolt cutter rod 445 as the locking bolt moves, so that the locking bolt The bolt can enter the first mounting hole under the drive of the second driving mechanism 42; after the locking bolt enters the first mounting hole, the opening and closing piece 442 rotates and resets in the direction of the locking bolt under the action of its own gravity; at this time, the bolt cutter bar 445 is located in the fixed first step groove structure, and the first step groove structure is used to limit the bolt cutter bar 445 at this time; when the second driving mechanism 42 drives the locking bolt located in the first mounting hole to rotate and tighten, the first mounting hole and the second mounting hole are connected through the locking bolt, so that the bearing cover is fixed on the bearing seat. After the bearing seat and the bearing cover are connected, since the diameter of the bolt cutter bar 445 is smaller than the diameter of the top of the locking bolt, the bolt cutter bar 445 can be moved to the top of the opening and closing piece 442 through the second step groove structure under the drive of the second driving mechanism 42 and reset.

[0054] In a further optimization, the opening and closing member 442 is provided with a slot 444 communicating with the first placement slot 443. The slot 444 can be provided to enable the fixing member to smoothly move from the exit of the guide rail 43 to the first placement slot 443.

[0055] Based on the visual inspection tightening device described above, this embodiment also describes a visual inspection tightening method, which includes the following steps:

[0056] Step 1: The first driving device 25 drives the clamping mechanism 2 to move downward to clamp the bearing shoe cover to be installed;

[0057] Step 2: Identify the mark on the bearing shoe cover by the detection mechanism 5 installed on the clamping mechanism 2 to determine whether the direction and number of the bearing shoe cover are correct;

[0058] Step 3: Under the drive of the first driving device 25, the clamping mechanism 2 moves the bearing shoe cover with the identification mark to the bearing seat installed in the engine cylinder body;

[0059] Step 4: Identify by means of the detection mechanism 5 whether the first mounting hole provided on the bearing shoe cover is aligned with the second mounting hole provided on the bearing seat;

[0060] Step 5: Fix the bearing shoe cover on the bearing seat through the tightening mechanism 4.

[0061] Embodiment 2

[0062] See also Figure 3-Figure 8 This embodiment is further optimized on the basis of the first embodiment. A blocking member is installed on the guide rail 43, and the blocking member is detachably connected to the discharge port of the guide rail 43. The blocking member is used to block the fixing member in the guide rail 43. When the fixing member needs to be guided and discharged through the guide rail 43, the blocking member can be rotated to move upward to release the blocking of the outlet of the guide rail 43 by the component, so as to realize the discharge.

[0063] Further optimization is that the opening and closing piece 442 is provided with a second placement groove 446 connected to the outside, and a baffle 447 is symmetrically connected to the second placement groove 446, and a nut groove 448 is provided on the baffle 447, and a yield groove 449 connected to the second placement groove 446 is provided on the opening and closing piece 442. In this embodiment, the fixing piece is a locking nut, and the output end of the second driving mechanism 42 is connected to a nut arbor 450 for cooperating with the locking nut; when the two opening and closing pieces 442 are in contact, the nut grooves 448 on the two baffles 447 form a second step groove structure connected to the outside; after the locking nut moves into the second step groove structure under the guidance of the guide rail 43, the first driving motor 423 drives the rotating rod 441 and the opening and closing piece 442 to move to a position corresponding to the nut arbor 450, and the nut arbor 450 moves downward to a position corresponding to the nut arbor 450. After the locking nut contacts, the locking nut moves downward under the drive of the second driving mechanism 42; the opening and closing piece 442 rotates in the direction away from the nut blade 450 as the locking nut moves, so that the locking nut can enter the second mounting hole under the drive of the second driving mechanism 42; after the locking nut enters the second mounting hole, the opening and closing piece 442 rotates and resets in the direction of the locking nut under the action of its own gravity; at this time, the nut blade 450 is located in the second stepped groove structure; After that, the nut cutter rod 450 moves upward under the drive of the second driving mechanism 42. After the nut cutter rod 450 contacts the baffle plate 447, the baffle plate 447 rotates in the direction away from the nut cutter rod 450 as the nut cutter rod 450 moves, so that the nut cutter rod 450 can move to the top of the opening and closing member 442 through the second placement groove 446 to reset; when the baffle plate 447 rotates in the direction away from the nut cutter rod 450, the make way groove 449 is used to make way for the flipped baffle plate 447, and the nut cutter rod 450 moves to the opening and closing member After the opening and closing member 442 is out, the blocking piece 447 is reset under the action of gravity; when the bearing seat and the bearing cover need to be connected by tightening the locking nut, since the diameter of the sleeve used to limit the locking nut in the nut cutter bar 450 needs to be larger than the diameter of the locking nut, it is impossible to directly move to the top of the opening and closing member 442 through the first placement groove 443 after tightening like the bolt cutter bar 445 and then reset; by providing the blocking piece 447, it is possible to prevent the nut cutter bar 450 from being blocked by the opening and closing member 442 during the resetting process, thereby improving the versatility of the tightening mechanism 4.

[0064] Further optimization is performed, an elastic member is connected between the two opening and closing members 442. When the fixing member is opened outward under the drive of the second driving mechanism 42, the elastic member connecting the two opening and closing members 442 is stretched, and when the second driving mechanism 42 drives the fixing member to enter the first mounting hole, the elastic member contracts, and the two opening and closing members 442 rotate toward the output end of the second driving mechanism 42 to contact under the action of the elastic member; in this embodiment, the elastic member is a spring, and the efficiency and effect of resetting the opening and closing members 442 can be improved by providing the spring.

[0065] Among them, the second driving mechanism 42 includes a fourth driving device 421, a slide plate 422 and a second driving motor 424, the fourth driving device 421 is a conventional telescopic rod device in the prior art, the slide plate 422 is slidably installed on the connecting frame 41, the fourth driving device 421 is used to drive the slide plate 422 to move vertically up and down, the second driving motor 424 is installed on the slide plate 422, and the output end of the second driving motor 424 is used to connect with the bolt rod or the nut rod and to drive the bolt rod or the nut rod to rotate.

[0066] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A visual inspection tightening device, characterized in that: It comprises a detection station (6), a tightening station (1) and a conveying device (7), wherein the detection station (6) and the tightening station (1) are connected via the conveying device (7); The tightening station (1) comprises a mounting frame (3) and a tightening mechanism (4), and the detection station (6) comprises a clamping mechanism (2) and a support frame (21); the clamping mechanism (2) comprises a shell (22), a clamping jaw assembly (23) and a first driving mechanism (24) mounted on the shell (22); the clamping jaw assembly (23) is slidably mounted on the shell (22); the first driving mechanism (24) is used to drive the clamping jaw assembly (23) to open and close; the shell (22) is mounted with a detection mechanism (5); and the support frame (21) is mounted with a first driving device (25) for driving the shell (22) to move vertically; The clamping jaw assembly (23) comprises two clamping jaw bodies (231) symmetrically mounted on the left and right sides of the housing (22).

2. A visual inspection tightening device according to claim 1, characterized in that: The first driving mechanism (24) comprises a telescopic device (241), a driving block (242) and a guide block (243); the telescopic device (241) is mounted on the housing (22) and is used to drive the driving block (242) to move; the guide block (243) is connected to the clamping jaw body (231) and a guide surface is provided on the guide block (243); the driving block (242) is slidably connected to the guide block (243) via the guide surface.

3. A visual inspection tightening device according to claim 2, characterized in that: The clamping jaw body (231) is provided with a clamping slot (232).

4. A visual inspection tightening device according to claim 1, characterized in that: A positioning frame (11) is installed on the mounting frame (3), and a slot is provided on the positioning frame (11).

5. A visual inspection tightening device according to claim 1, characterized in that: The tightening mechanism (4) comprises a moving platform (111), a connecting frame (41), a second driving mechanism (42), a guide rail (43) and a rotating assembly (44) rotatably mounted on the connecting frame (41); the second driving mechanism (42) and the guide rail (43) are both mounted on the connecting frame (41); the connecting frame (41) is connected to the moving platform (111); a second driving device (45) for driving the moving platform (111) to move is mounted on the mounting frame (3); a third driving device (46) for driving the connecting frame (41) to move is arranged on the moving platform (111); a first driving motor (423) for driving the rotating rod (441) to rotate is mounted on the connecting frame (41); the guide rail (43) is used to cooperate with the rotating assembly (44) to move the fixing member to the lower side of the tightening mechanism (4).

6. A visual inspection tightening device according to claim 1, characterized in that: The rotating assembly (44) comprises a rotating rod (441) and an opening and closing member (442) symmetrically hinged on the movable end of the rotating rod (441), and a first placement groove (443) is provided on the opening and closing member (442).

7. A visual inspection tightening device according to claim 6, characterized in that: The opening and closing member (442) is provided with a slot (444) which is in communication with the first placement slot (443).

8. A visual inspection tightening method, characterized in that: A method for visually inspecting and installing a bearing shoe cap, comprising the following steps: Step 1: The first driving device (25) drives the clamping mechanism (2) to move downward to clamp the bearing shoe cover to be installed; Step 2: Identify the mark on the bearing shoe cover by the detection mechanism (5) installed on the clamping mechanism (2) to determine whether the direction and number of the bearing shoe cover are correct; Step 3: Under the drive of the first driving device (25), the clamping mechanism (2) moves the bearing shoe cover with the identification mark to the bearing seat installed in the engine cylinder body; Step 4: Identify, by means of a detection mechanism (5), whether the first mounting hole provided on the bearing shoe cover is aligned with the second mounting hole provided on the bearing seat; Step 5: Fix the bearing shoe cover on the bearing seat by means of the tightening mechanism (4).

Images