阅读说明：本技术 变速箱油底壳同步预拧紧装置 (Synchronous pre-tightening device for oil pan of gearbox ) 是由 潘俊 杨秋生 刘冲 于 2021-07-22 设计创作，主要内容包括：本发明公开了变速箱油底壳同步预拧紧装置,涉及汽车发动机装配技术领域,包括夹具底板、拧紧机构和换枪盘,夹具底板上开设有第一通孔；拧紧机构包括气动枪和拧紧组件,拧紧组件位于夹具底板下方且与夹具底板连接,气动枪穿设于第一通孔并与拧紧组件中部连接,气动枪可驱动拧紧组件将螺栓拧紧；换枪盘位于夹具底板上端面中部。通过夹具底板、拧紧机构和换枪盘之间的配合使用,夹具底板通过换枪盘与一机械手连接,以带动拧紧机构靠近油底壳,气动枪驱动拧紧组件将螺栓同步拧入油底壳上的螺栓孔内,无需人工进行操作,避免了因每颗螺栓的拧入深度不一致,从而影响了油底壳的质量。(The invention discloses a synchronous pre-tightening device for a gearbox oil pan, which relates to the technical field of automobile engine assembly and comprises a clamp bottom plate, a tightening mechanism and a gun changing plate, wherein a first through hole is formed in the clamp bottom plate; the tightening mechanism comprises a pneumatic gun and a tightening assembly, the tightening assembly is located below the clamp bottom plate and connected with the clamp bottom plate, the pneumatic gun penetrates through the first through hole and is connected with the middle of the tightening assembly, and the pneumatic gun can drive the tightening assembly to tighten the bolt; the gun changing plate is positioned in the middle of the upper end face of the clamp bottom plate. Through anchor clamps bottom plate, screw up the mechanism and trade the cooperation between the rifle dish and use, the anchor clamps bottom plate is connected with a manipulator through trading the rifle dish to the mechanism is close to the oil pan to the drive is screwed up, and pneumatic rifle drive is screwed up the subassembly and is twisted the bolt hole on the oil pan with the bolt in step, need not the manual work and operates, has avoided because of the wrong degree of depth of the wrong income of every bolt inconsistent, thereby has influenced the quality of oil pan.)

1. A synchronous pre-tightening device for a gearbox oil pan is characterized by comprising:

the clamp comprises a clamp bottom plate (1), wherein a first through hole (11) is formed in the clamp bottom plate (1);

the tightening mechanism comprises a pneumatic gun (2) and a tightening assembly, the tightening assembly is positioned below the clamp bottom plate (1) and connected with the clamp bottom plate (1), and the pneumatic gun (2) penetrates through the first through hole (11) and is connected with the middle of the tightening assembly;

and the gun changing plate (4) is positioned in the middle of the upper end surface of the clamp bottom plate (1).

2. The synchronous pre-tightening device for the gearbox oil pan according to claim 1, characterized in that: four corners of the upper end face of the tightening assembly are respectively provided with a fixing column (301) connected with the clamp bottom plate (1), and a spring (302) is sleeved on the fixing column (301).

3. The synchronous pre-tightening device for the gearbox oil pan according to claim 2, characterized in that: the tightening assembly comprises an upper shell (303) and a lower shell (303), the pneumatic gun (2) is vertically arranged, and the lower end of the pneumatic gun penetrates through the upper shell (303); a power transmission assembly is arranged in a cavity enclosed by the upper shell (303) and the lower shell (303), the lower end of the pneumatic gun (2) is connected with the power transmission assembly, and a tightening sleeve (305) connected with the power transmission assembly is arranged on the power transmission assembly.

4. The synchronous pre-tightening device for the gearbox oil pan according to claim 3, characterized in that: the power transmission assembly comprises a driving wheel (306), a plurality of driven wheels (307) and a guide idle wheel (308), rotating shafts (309) are vertically arranged at the centers of the driving wheel (306) and the driven wheels (307), two ends of each rotating shaft (309) of the driving wheel (306) are respectively connected with the pneumatic gun (2) and the lower shell (303) through bearings (310), two ends of each rotating shaft (309) of the driven wheels (307) are respectively connected with the upper shell (303) and the lower shell (303) through the bearings (310), the lower ends of the rotating shafts (309) of the driven wheels (307) penetrate through the lower shell (303), and the lower ends of the rotating shafts (309) of the driven wheels (307) are fixedly connected with the tightening sleeve (305); a fixed shaft (311) is vertically arranged at the center of the guide idle wheel (308), and two ends of the fixed shaft (311) are fixedly connected with the upper shell (303) and the lower shell (303) respectively; and a transmission belt (312) is wound on the driving wheel (306), the driven wheel (307) and the guide idle wheel (308).

5. The synchronous pre-tightening device for the gearbox oil pan according to claim 4, wherein: the transmission belt (312) wound between the guide idle wheel (308) and two adjacent driven wheels (307) or between the driven wheels (307) and the driving wheel (306) is V-shaped.

6. The synchronous pre-tightening device for the gearbox oil pan according to claim 4, wherein: and a clamping mechanism for clamping the oil pan is arranged on the upper end surface of the upper shell (303).

7. The synchronous pre-tightening device for the gearbox oil pan according to claim 6, wherein: the clamping mechanism comprises a motor (501) and a first gear (502) which are arranged on the upper end surface of the upper shell (303), the first gear (502) is rotationally connected to the upper shell (303), a second gear (503) is connected to an output shaft of the motor (501), and the second gear (503) is meshed with the first gear (502); the upper end surface of the first gear (502) is provided with threads (504), four sliding blocks (505) are uniformly distributed on the upper end surface of the first gear (502), thread grooves are formed in the bottoms of the four sliding blocks (505), the thread grooves are meshed with the threads (504), horizontally arranged sliding rods (506) are movably arranged on the sliding blocks (505) in a penetrating mode, and one ends of the sliding rods (506) are connected to the upper shell (303) through first fixing blocks (507); a connecting rod component is hinged on the sliding block (505), and one side of the connecting rod component is connected with the sliding rod (506).

8. The synchronous pre-tightening device for the gearbox oil pan according to claim 7, characterized in that: the connecting rod component comprises a second fixing block (508) fixedly connected to the sliding rod (506), one side of the second fixing block (508) is hinged to the top angle of a triangular connecting piece (509), one bottom angle of the connecting piece (509) is hinged to a first connecting rod (510), one end of the first connecting rod (510) is hinged to the sliding block (505), the other bottom angle of the connecting piece (509) is hinged to a second connecting rod (511), one end of the second connecting rod (511) is hinged to a hanging rod (512), the hanging rod (512) is hinged to a third connecting rod (513), one end of the third connecting rod (513) is hinged to the second fixing block (508), and the sliding block (505) can drive the first connecting rod (510), the second connecting rod (511), the third connecting rod (513) and the hanging rod (512) to rotate.

Technical Field

The invention relates to the technical field of automobile engine assembly, in particular to a synchronous pre-tightening device for a gearbox oil pan.

Background

At present, the assembly of the existing gearbox oil pan is usually carried out in a manual mode, namely, a worker holds a bolt tightening gun by hand to tighten and assemble bolts one by one, although the mode is feasible, the mode is obviously not suitable for large enterprises with high automation concentration; the problem of inefficiency, intensity of labour are big is screwed up to the manual work, and simultaneously, manual operation can't accomplish in unison, leads to it to when screwing up the bolt, and the wrong income degree of depth of every bolt to the quality of oil pan has been influenced.

Disclosure of Invention

The invention aims to provide a synchronous pre-tightening device for an oil pan of a gearbox, which ensures that bolts are screwed into the oil pan of the gearbox in consistent depth.

The synchronous pre-tightening device for the gearbox oil pan comprises a clamp bottom plate, a tightening mechanism and a gun changing plate, wherein a first through hole is formed in the clamp bottom plate; the tightening mechanism comprises a pneumatic gun and a tightening assembly, the tightening assembly is located below the clamp bottom plate and connected with the clamp bottom plate, the pneumatic gun penetrates through the first through hole and is connected with the middle of the tightening assembly, and the pneumatic gun can drive the tightening assembly to tighten the bolt; the gun changing plate is positioned in the middle of the upper end face of the clamp bottom plate.

Specifically, four corners of the upper end face of the screwing assembly are respectively provided with fixing columns connected with the clamp bottom plate, and springs are sleeved on the fixing columns.

Furthermore, the tightening assembly comprises an upper shell and a lower shell, the pneumatic gun is vertically arranged, and the lower end of the pneumatic gun penetrates through the upper shell; enclose into a cavity between epitheca and the inferior valve, be provided with the power transmission subassembly in the cavity that epitheca and inferior valve enclose, the lower extreme and the power transmission subassembly of pneumatic rifle are connected, are provided with the sleeve of screwing up that is connected with the power transmission subassembly on the power transmission subassembly, and pneumatic rifle makes to screw up the sleeve and screws up the bolt through the power transmission subassembly.

The power transmission assembly comprises a driving wheel, a plurality of driven wheels and a guide idler wheel, rotating shafts are vertically arranged at the centers of the driving wheel and the driven wheels, and two ends of the rotating shaft of the driving wheel are respectively connected with the pneumatic gun and the lower shell through bearings so that the pneumatic gun can drive the driving wheel to rotate; the lower end of the rotating shaft of the driven wheel penetrates out of the lower shell, and one end of the rotating shaft of the driven wheel, which penetrates out of the lower shell, is fixedly connected with the screwing sleeve; a fixed shaft is vertically arranged in the center of the guide idle wheel, and two ends of the fixed shaft are fixedly connected with the upper shell and the lower shell respectively; and the driving wheel, the driven wheel and the guide idle wheel are wound with a transmission belt, and the guide idle wheel can assist the tension between the adjacent driving wheel and the driven wheel or between the two driven wheels and the transmission belt.

Preferably, the transmission belt wound between the guide idle wheel and two adjacent driven wheels or between the driven wheel and the driving wheel is V-shaped.

Further, a clamping mechanism for clamping the oil pan is provided on the upper end surface of the upper case to prevent the position of the oil pan from shifting during tightening.

Specifically, the clamping mechanism comprises a motor and a first gear which are arranged on the upper end surface of the upper shell, the first gear is rotationally connected to the upper shell, a second gear is connected to an output shaft of the motor, and the second gear is meshed with the first gear; the upper end face of the first gear is provided with threads, four sliding blocks are uniformly distributed on the upper end face of the first gear, threaded grooves which are matched with the threads on the first gear are formed in the sliding blocks, the four sliding blocks are meshed with the threads through the threaded grooves, sliding rods which are horizontally arranged are movably arranged on the sliding blocks in a penetrating mode, one ends of the sliding rods are connected to the upper shell through a first fixing block, the motor runs to drive the second gear to rotate, and the second gear drives the first gear to rotate so that the sliding blocks can move relative to the sliding rods; a connecting rod component is hinged on the sliding block, and one side of the connecting rod component is connected with the sliding rod.

Concretely, link assembly includes fixed connection in the second fixed block of slide bar, the second fixed block sets up in the one end tip that is close to the epitheca edge of slide bar, one side of second fixed block articulates in the apex angle of a connection piece that is triangle-shaped, one of them base angle department of connection piece articulates there is a first connecting rod, the one end of first connecting rod articulates in the slider, another base angle of connection piece articulates there is the second connecting rod, the one end of second connecting rod articulates there is the peg, it has a third connecting rod to articulate on the peg, the one end of third connecting rod articulates in the second fixed block, the slider can drive first connecting rod, the second connecting rod, third connecting rod and peg rotate.

The synchronous pre-tightening device for the gearbox oil pan at least has the following beneficial effects that the clamp bottom plate, the tightening mechanism and the gun changing plate are matched for use, the clamp bottom plate is connected with a manipulator through the gun changing plate to drive the tightening mechanism to be close to the oil pan, the pneumatic gun drives the tightening assembly to synchronously screw bolts into bolt holes in the oil pan, manual operation is not needed, and the problem that the quality of the oil pan is influenced due to the fact that the screwing depth of each bolt is not consistent is avoided.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further illustrated with reference to the following figures and examples:

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a structural view of the present invention with the lower case removed;

FIG. 3 is a block diagram of the power transfer assembly of the present invention;

FIG. 4 is a top view of the clamping mechanism of the present invention;

FIG. 5 is a block diagram of the connecting rod assembly of the present invention;

fig. 6 is a structural view of a clamped state of the connecting rod assembly of the present invention.

Reference numerals: the pneumatic gun comprises a clamp bottom plate 1, a first through hole 11, a pneumatic gun 2, a gun changing plate 4, a fixing column 301, a spring 302, an upper shell 303, a lower shell 304, a screwing sleeve 305, a driving wheel 306, a driven wheel 307, a guide idle wheel 308, a rotating shaft 309, a bearing 310, a fixing shaft 311, a driving belt 312, a motor 501, a first gear 502, a second gear 503, a thread 504, a sliding block 505, a sliding rod 506, a first fixing block 507, a second fixing block 508, a connecting sheet 509, a first connecting rod 510, a second connecting rod 511, a hanging rod 512 and a third connecting rod 513.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, greater than, less than, exceeding, etc. are understood as excluding the present numbers, and the above, below, inside, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1, the synchronous pre-tightening device for the oil pan of the gearbox comprises a clamp bottom plate 1, a tightening mechanism and a gun changing plate 4, wherein a first through hole 11 is formed in the clamp bottom plate 1; the tightening mechanism comprises a pneumatic gun 2 and a tightening assembly, the tightening assembly is positioned below the clamp bottom plate 1 and connected with the clamp bottom plate 1, the pneumatic gun 2 penetrates through the first through hole 11 and is connected with the middle part of the tightening assembly, and the pneumatic gun 2 can drive the tightening assembly to tighten the bolt; trade rifle dish 4 and be located anchor clamps bottom plate 1 up end middle part for be connected with the manipulator, the manipulator drives anchor clamps bottom plate 1 and screws up the mechanism and remove to the oil pan through trading rifle dish 4.

Through anchor clamps bottom plate 1, screw up the mechanism and trade the cooperation use between the rifle dish 4, anchor clamps bottom plate 1 is connected with a manipulator through trading rifle dish 4 to the mechanism is close to the oil pan to the drive is screwed up to the drive, and the subassembly is screwed up in the bolt hole on screwing in the oil pan with the bolt to pneumatic gun 2 drive, need not the manual work and operates, has avoided because of the artifical wrong problem that causes the oil pan damage easily of the wrong degree of depth that twists existence screw rod.

Specifically, four corners of the upper end face of the tightening assembly are respectively provided with fixing columns 301 connected with the clamp base plate 1, and springs 302 are sleeved on the fixing columns 301 to buffer reaction force generated in the tightening process.

Referring to fig. 2, further, the tightening assembly includes an upper case 303 and a lower case 303, the air gun 2 is vertically disposed, and the lower end of the air gun 2 penetrates the upper case 303; enclose into a cavity between epitheca 303 and the inferior valve 303, be provided with the power transmission subassembly in the cavity that epitheca 303 and inferior valve 303 enclose, the lower extreme and the power transmission subassembly of pneumatic gun 2 are connected, are provided with the sleeve 305 of screwing up that is connected with the power transmission subassembly on the power transmission subassembly, and pneumatic gun 2 makes to screw up sleeve 305 through the power transmission subassembly and screws up the bolt.

Specifically, the middle part of epitheca 303 is provided with the through-hole, and the up end of epitheca 303 is located through-hole department and is provided with the mount pad, and pneumatic gun 2 passes through the mount pad and is connected with epitheca 303.

Referring to fig. 2 and 3, the power transmission assembly includes a driving wheel 306, a plurality of driven wheels 307 and a guide idle wheel 308, a rotating shaft 309 is vertically disposed at the centers of the driving wheel 306 and the driven wheels 307, and both ends of the rotating shaft 309 of the driving wheel 306 are respectively connected with the pneumatic gun 2 and the lower shell 303 through bearings 310, so that the pneumatic gun 2 can drive the driving wheel 306 to rotate; two ends of a rotating shaft 309 of the driven wheel 307 are respectively connected with the upper shell 303 and the lower shell 303 through bearings 310, so that the driven wheel 307 can rotate relative to the rotating shaft 309, the lower end of the rotating shaft 309 of the driven wheel 307 penetrates through the lower shell 303 and one end of the rotating shaft which penetrates through the lower shell 303 is fixedly connected with a tightening sleeve 305, and the bottom of the tightening sleeve 305 is connected with a bolt; a fixed shaft 311 is vertically arranged at the center of the guide idle wheel 308, and two ends of the fixed shaft 311 are fixedly connected with the upper shell 303 and the lower shell 303 respectively; a drive belt 312 is wound around the drive wheel 306, the driven wheels 307 and the guide idler 308, and the guide idler 308 can assist the tension between the adjacent drive wheel 306 and driven wheel 307 or between the adjacent two driven wheels 307 and between the drive belt 312.

Preferably, the driving belt 312 wound around the guide idler 308 and its adjacent two driven wheels 307 or between the driven wheels 307 and the driving wheel 306 is V-shaped, and the air gun is started and the tightening sleeve 305 is synchronously rotated by the transmission among the driving wheel 306, the driven wheels 307 and the guide idler 308, so that the bolts are synchronously screwed into the bolt holes of the oil pan.

In some embodiments, the power transmission assembly is not limited to this embodiment, and other devices with power transmission function may be used, for example, by using a combination of a rotating shaft, a gear and a transmission belt 312 to achieve the same purpose.

Referring to fig. 4, further, a clamping mechanism for clamping the oil pan is provided on the upper end surface of the upper case 303 to prevent a positional deviation from the oil pan during tightening.

Referring to fig. 4, specifically, the clamping mechanism includes a motor 501 and a first gear 502, which are arranged on the upper end surface of the upper shell 303, the first gear 502 is rotatably connected to the upper shell 303, a second gear 503 is connected to an output shaft of the motor 501, and the second gear 503 is meshed with the first gear 502; the upper end surface of the first gear 502 is provided with threads 504, four sliding blocks 505 are uniformly distributed on the upper end surface of the first gear 502, the bottom of each sliding block 505 is provided with a thread groove (not shown) matched with the threads 504 on the first gear 502, the four sliding blocks 505 are meshed with the threads 504 through the thread grooves, a sliding rod 506 horizontally arranged is movably arranged on each sliding block 505 in a penetrating manner, one end of each sliding rod 506 is connected to the upper shell 303 through a first fixing block 507, the motor 501 operates to drive the second gear 503 to rotate, and the second gear 503 drives the first gear 502 to rotate so that the sliding blocks 505 move relative to the sliding rods 506; a link assembly is hinged on the sliding block 505, and one side of the link assembly is connected with the sliding rod 506.

Referring to fig. 5 and 6, in particular, the link assembly includes a second fixed block 508 fixedly connected to the sliding rod 506, the second fixed block 508 is disposed at an end portion of the sliding rod 506 close to an edge of the upper shell 303, one side of the second fixed block 508 is hinged to a vertex angle of a triangular connecting piece 509, a first link 510 is hinged to one bottom angle of the connecting piece 509, one end of the first link 510 is hinged to the sliding block 505, the other bottom angle of the connecting piece 509 is hinged to a second link 511, one end of the second link 511 is hinged to a hanging rod 512, a third link 513 is hinged to the hanging rod 512, and one end of the third link 513 is hinged to the second fixed block 508, so as to form a four-link structure, and the sliding block 505 can drive the first link 510, the second link 511, the third link 513 and the hanging rod 512 to rotate.

In some embodiments, the second link 511, the third link 513 and the hanging rod 512 in the connecting rod assembly can be directly replaced by a bent limiting rod, and the limiting rod is fixedly connected with the connecting piece 509, and other components are referred to above.

When the oil pan is used, the motor 501 operates to drive the first gear 502 to rotate, the first gear 502 drives the sliding block 505 on the sliding rod 506 to move outwards or inwards along the sliding rod 506, when the sliding block 505 moves outwards, the first connecting rod 510 pushes one bottom angle of the connecting piece 509 to rotate relative to a top angle, the second connecting rod 511 rotates along with the other bottom angle of the connecting piece 509 to ascend, the hanging rod 512 ascends and rotates along with the first connecting rod, and the third connecting rod 513 rotates along with the first connecting rod, until the sliding block 505 cannot move outwards, the hanging rod 512 is far away from the oil pan; when the sliding block 505 moves inwards, the first link 510 pulls one bottom corner of the connecting piece 509 to rotate relative to the top corner thereof, the second link 511 rotates along with the other bottom corner of the connecting piece 509, and the second link 511 pushes the third link 513 to rotate through the hanging rod 512, and drives the hanging rod 512 to rotate.

One mode of operation of the present invention is as follows: when needing to carry out bolt tightening, the manipulator drives anchor clamps bottom plate 1 and screws up the mechanism and removes to the oil pan through trading rifle dish 4, after removing to corresponding position, fixture's motor 501 operation, so that link assembly is fixed with the oil pan restriction, pneumatic rifle 2 operation drives an individual rotation from driving wheel 307 through action wheel 306 and drive belt 312, in order to screw up the bolt hole on the bolt-in oil pan and screw up on the sleeve 305, after the completion of screwing up, fixture returns, the manipulator drives anchor clamps bottom plate 1 and returns, so that screw up next time.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.