Gearbox shell blank sand cleaning device and sand cleaning method

Abstract

The application discloses a gearbox shell blank sand cleaning device and a sand cleaning method. The device comprises a base, a shot blasting chamber and a suspension trolley arranged on the top of the base. The suspension trolley comprises a hollow carrier disc, a hanging piece arranged on the top of the hollow carrier disc, support leg wheels arranged on the bottom of the hollow carrier disc, a fixed disc rotatably connected to the inside of the hollow carrier disc, arc-shaped slot grooves processed on the top of the fixed disc, a plurality of support pieces arranged on the top of the fixed disc and movably penetrating through the top of the hollow carrier disc, and a positioning mechanism arranged on the bottom of the fixed disc. The plurality of support pieces carry the gearbox shell. The shot blasting chamber suspends and rotates the suspension trolley to clean sand. Meanwhile, the fixed disc is positioned with the bottom of the shot blasting chamber through the positioning mechanism, so that the fixed disc and the support pieces relatively rotate, the plurality of support pieces successively pass through the arc-shaped slot grooves and descend to expose the bottom bearing area of the gearbox shell, and the comprehensive sand cleaning of the gearbox shell is realized.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automobile part processing, and particularly relates to a gearbox shell blank sand cleaning device and a sand cleaning method. BACKGROUND

[0002] The gearbox shell is one of the important parts in an automobile, and its processing steps include mold forming-buried sand, pouring-surface sand cleaning, variable focus polishing-surface painting, etc. When the surface is cleaned, a shot blasting machine is usually used to treat the product.

[0003] Due to the heavy weight and irregular shape of the gearbox shell, the gearbox shell is usually fixed by hoisting when shot blasting. For example, a gearbox shell blank sand cleaning device disclosed in patent No. CN 114643538A suspends the gearbox shell by a hook of a hoisting mechanism.

[0004] However, for the gearbox shell, whether it is suspended by a hook or a suspension rope, there is inevitably a part in contact between the suspension part and the gearbox shell. The shot blasting in the shot blasting chamber cannot be performed on this part, resulting in incomplete shot blasting. Moreover, this part is usually located in the groove or through hole part, and it is difficult to perform subsequent manual sand cleaning operations. SUMMARY

[0005] In view of the problems in the prior art, the application provides the following technical scheme:

[0006] A gearbox shell blank sand cleaning device comprises a base, a shot blasting chamber and a suspension cart provided on the top of the base, the suspension cart comprises a hollow carrier disc, a hanging part is provided on the top of the hollow carrier disc, support leg wheels are provided on the bottom of the hollow carrier disc, a fixed disc is rotatably connected in the hollow carrier disc, arc-shaped slot is processed on the top of the fixed disc, a plurality of support parts are provided on the top of the fixed disc and movably penetrate the top of the hollow carrier disc, and a positioning mechanism is provided on the bottom of the fixed disc.

[0007] The plurality of support parts bear the gearbox shell, the shot blasting chamber suspends and rotates the suspension cart through the hanging part, the fixed disc is positioned with the bottom of the shot blasting chamber through the positioning mechanism, the fixed disc and the support parts are relatively rotated, the plurality of support parts are sequentially lowered to expose the bottom bearing area of the gearbox shell through the arc-shaped slot, and the gearbox shell is fully cleaned.

[0008] As a preferred embodiment of the above technical scheme, the hanging part comprises a plurality of connecting rods fixedly connected to the top of the hollow carrier disc, and a top magnetic block is fixedly connected to the top ends of the plurality of connecting rods.

[0009] As a preferred embodiment of the above technical solution, the positioning mechanism includes a connecting cylinder, a sliding positioning rod, fastening bolts, and a positioning cylinder fixed at the bottom of the shot blasting chamber;

[0010] The sliding positioning rod is slidably inserted into the inner cavity of the connecting cylinder and fixed by fastening bolts.

[0011] As a preferred embodiment of the above technical solution, the support member includes an outer sleeve and an inner support rod, with the inner support rod slidably inserted into the inner wall of the outer sleeve, and a ball bearing seat installed at the bottom end of the outer sleeve; the support member also includes a floating component and an electromagnetic positioning component.

[0012] As a preferred embodiment of the above technical solution, the top end of the inner support rod is fixedly connected to a top plate, and the diameter of the top plate is larger than the outer diameter of the outer sleeve.

[0013] As a preferred embodiment of the above technical solution, the floating component includes a floating spring fixedly connected to the bottom of the inner support rod, and the bottom end of the floating spring is fixed to the bottom of the inner cavity of the outer sleeve.

[0014] As a preferred embodiment of the above technical solution, the top of the hollow carrier is provided with an insertion hole that matches the outer sleeve, the outer wall of the outer sleeve is provided with a guide block, and the inner wall of the insertion hole is provided with a guide groove, and the guide groove matches the guide block.

[0015] As a preferred embodiment of the above technical solution, the electromagnetic positioning component includes a resistance plate and a magnetic resistance block. The magnetic resistance block is slidably inserted into the interior of the bottom end of the inner support rod, and the resistance plate is embedded and fixed to the outer wall of the outer sleeve and faces the magnetic resistance block.

[0016] The electromagnetic positioning assembly also includes a power supply box mounted on a hollow carrier plate. A control switch is mounted on the top of the power supply box. A second electromagnet is embedded and fixedly connected to the inner wall of the insertion hole, which is directly opposite the magnetic resistance block. The electromagnet is electrically connected to the power supply box via a wire.

[0017] A sand removal method, applied to the aforementioned sand removal device for a gearbox housing blank, the sand removal method comprising the following steps:

[0018] S1. Placement of the gearbox housing: The suspension trolley is pushed to the top of the base by the support leg wheels. The positioning mechanism is rotated to drive the fixed plate to the appropriate position so that all the support members are at the same height. The gearbox housing is placed on the multiple support members, and the multiple support members support the gearbox housing to fix its position.

[0019] S2. Preparation before sand removal: Push the placed gearbox housing and suspension trolley into the shot blasting chamber. The shot blasting chamber suspends the suspension trolley and gearbox housing. At the same time, the fixing plate is positioned with the bottom of the shot blasting chamber through the positioning mechanism.

[0020] S3, sand: the shot blasting chamber is suspended by the suspension trolley, and the fixed disc is positioned by the positioning mechanism and the bottom of the shot blasting chamber, so that the fixed disc and the support are relatively rotated, the multiple supports are lowered one by one through the arc-shaped slot to expose the bottom bearing area of the gearbox housing, and then the gearbox housing is fully cleaned.

[0021] The beneficial effects of the present application are:

[0022] 1, the gearbox housing is placed on the top of the multiple supports, then the shot blasting chamber is suspended by the hanging piece, then the suspended trolley and the gearbox housing are continuously rotated, the shot blasting machine in the shot blasting chamber is used for shot blasting and sand cleaning of the gearbox housing; at the same time, the fixed disc is positioned by the positioning mechanism and the bottom of the shot blasting chamber to keep still, while the hollow carrier disc, the support and the gearbox housing are continuously rotated, so that the fixed disc and the support are relatively rotated, in the process of relative rotation, the multiple supports are lowered one by one through the arc-shaped slot to expose the bottom bearing area of the gearbox housing, and then the steel balls thrown by the shot blasting machine can be used for shot blasting and sand cleaning of the area; then the lowered support passes through the arc-shaped slot and rises against the bottom of the gearbox housing again, which is reciprocated, so that the gearbox housing is fully cleaned, and the sand cleaning is more thorough;

[0023] 2, the multiple supports are used for bearing and fixing the gearbox housing, cooperating with the floating assembly and the electromagnetic positioning assembly, so as to ensure the bearing stability of the gearbox housing; at the same time, the structure design is flexible, suitable for bearing different kinds of gearbox housings, and has wide application range; compared with the contact part between the traditional hanging piece and the gearbox housing in the groove or hole part, the contact part between the support and the gearbox housing is more conducive to subsequent manual sand cleaning operation. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The present application is a kind of gearbox housing blank sand cleaning device, and the three-dimensional structure schematic diagram is shown.

[0025] Figure 2 The present application is a kind of gearbox housing blank sand cleaning device, and the three-dimensional structure schematic diagram is shown.

[0026] Figure 3 The present application is a kind of gearbox housing blank sand cleaning device, and the three-dimensional structure schematic diagram is shown.

[0027] Figure 4 The present application is a kind of gearbox housing blank sand cleaning device, and the three-dimensional structure schematic diagram is shown.

[0028] Figure 5It shows the three-dimensional structure schematic diagram of the fixed disc in the gearbox shell blank sand cleaning device of the application.

[0029] Figure 6 It shows the three-dimensional structure schematic diagram of the support in the gearbox shell blank sand cleaning device of the application.

[0030] Figure 7 It shows the internal structure schematic diagram of the outer sleeve in the gearbox shell blank sand cleaning device of the application.

[0031] Reference signs

[0032] 10, base; 20, shot blasting chamber; 31, hollow carrier disc; 32, power supply box; 33, support leg wheel; 34, support; 341, outer sleeve; 342, inner support rod; 343, top disc; 344, guide block; 345, resistance sheet; 346, ball seat; 347, magnetic resistance block; 348, floating spring; 35, connecting rod; 36, top magnetic block; 37, positioning mechanism; 371, connecting cylinder; 372, sliding positioning rod; 373, fastening bolt; 38, fixed disc; 381, arc-shaped slot. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the application more clear, the technical scheme of the application will be described clearly and completely below in conjunction with the embodiments.

[0034] As shown in Figure 1

[0035] A gearbox shell blank sand cleaning device, comprising a base 10, the top of the base 10 is provided with a shot blasting chamber 20 and a suspended cart 30;

[0036] The suspended cart 30 is used to carry the gearbox shell, and then the suspended cart 30 and the gearbox shell are pushed into the shot blasting chamber 20 as a whole, and then the shot blasting operation is carried out on the gearbox shell in the shot blasting chamber 20.

[0037] As shown in Figures 2-5

[0038] The suspended cart 30 comprises a hollow carrier disc 31, the top of the hollow carrier disc 31 is provided with a hanging piece, the bottom of the hollow carrier disc 31 is provided with a support leg wheel 33, the inside of the hollow carrier disc 31 is rotationally connected with a fixed disc 38, the top of the fixed disc 38 is processed with an arc-shaped slot 381, the top of the fixed disc 38 is provided with a plurality of supports 34, and the supports 34 movably penetrate through the top of the hollow carrier disc 31, and the bottom of the fixed disc 38 is provided with a positioning mechanism 37.

[0039] ​​The multiple supporting members 34 carry the gearbox shell, the shot blasting chamber 20 suspends and rotates the trolley 30 for sand cleaning by the hanging member, and the fixed disc 38 is positioned with the bottom of the shot blasting chamber 20 by the positioning mechanism 37, so that the fixed disc 38 and the supporting member 34 rotate relatively, and the multiple supporting members 34 are lowered one by one through the arc-shaped slot 381 to expose the bottom bearing area of the gearbox shell, thereby realizing comprehensive sand cleaning of the gearbox shell.

[0040] After the gearbox shell is placed on the top of the multiple supporting members 34, the shot blasting chamber 20 suspends the trolley 30, and then drives the trolley 30 and the gearbox shell to rotate continuously, and the shot blasting machine in the shot blasting chamber 20 performs shot blasting sand cleaning on the gearbox shell; at the same time, the fixed disc 38 is positioned with the bottom of the shot blasting chamber 20 by the positioning mechanism 37 and remains stationary, while the hollow carrier disc 31, the supporting member 34 and the gearbox shell rotate continuously, so that the fixed disc 38 and the supporting member 34 rotate relatively. During the relative rotation, the multiple supporting members 34 are lowered one by one through the arc-shaped slot 381 to expose the bottom bearing area of the gearbox shell, and the steel balls blasted by the shot blasting machine can perform shot blasting sand cleaning on the exposed bearing area. When the supporting member 34 continues to rotate and descend, it passes through the arc-shaped slot 381 and rises again to the bottom of the gearbox shell. In this way, the gearbox shell can be fully cleaned, avoiding dead angles and making the cleaning more thorough.

[0041] It should be noted that the multiple supporting members 34 are distributed in a staggered manner when positioned, so that when the arc-shaped slot 381 rotates to a certain position, the multiple supporting members 34 do not descend simultaneously, which affects the stability of the supporting of the gearbox shell. Further, in actual application, the multiple supporting members 34 should be positioned with a certain area of blank position, i.e. when the arc-shaped slot 381 rotates to the blank position, all the supporting members 34 are not in the arc-shaped slot 381 area, and all the supporting members 34 are at the highest position, so that the gearbox shell is placed on the top of the multiple supporting members 34 in this state, which can ensure the flatness of the gearbox shell.

[0042] As shown in Figure 6 , Figure 7 shown

[0043] The supporting member 34 includes an outer sleeve 341 and an inner support rod 342, and the inner support rod 342 is slidingly inserted into the inner wall of the outer sleeve 341, and the bottom end of the outer sleeve 341 is provided with a ball seat 346; the supporting member 34 further comprises a floating assembly and an electromagnetic positioning assembly;

[0044] By setting the floating assembly, the gearbox housing can be placed more closely on the plurality of supports 34; after the gearbox housing is placed closely on the plurality of supports 34, the floating assembly in the support 34 can be fixed by the electromagnetic positioning assembly, ensuring the support stability of the gearbox housing during subsequent transportation and shot blasting; even if the support 34 will be lifted under the action of the arc-shaped groove 381 during subsequent shot blasting, the support of the support 34 to the gearbox housing will not be affected by the floating assembly. The present application sets a plurality of supports 34 for bearing and fixing the gearbox housing, cooperates with the floating assembly and the electromagnetic positioning assembly, not only ensures the bearing stability of the gearbox housing; at the same time, the structure design has high flexibility, is suitable for bearing different types of gearbox housings, and has wide application range; in addition, compared with the contact part between the traditional suspension part and the gearbox housing in the groove or through hole part, the contact part between the support 34 and the gearbox housing is more conducive to subsequent manual sand cleaning operation.

[0045] The top end of the inner support rod 342 is fixedly connected with a top disc 343, and the diameter of the top disc 343 is set to be greater than the outer diameter of the outer sleeve 341; in this way, when the gearbox housing is placed from top to bottom, as long as the top disc 343 on a certain support 34 can contact the gearbox housing, the inner support rod 342, the floating assembly and the like on the support 34 can be driven to descend and bear weight; when the top disc 343 on a certain support 34 does not contact the gearbox housing, since the diameter of the top disc 343 is greater than the outer diameter of the outer sleeve 341, the gearbox housing will not contact the outer sleeve 341 on the support 34 during the process of being placed and descending, and there will be a certain distance gap between the outer sleeve 341 on the support 34, thereby avoiding the contact and shielding dead angle of shot blasting.

[0046] Embodiment

[0047] The hanging part includes a plurality of connection rods 35 fixedly connected at the top of the hollow carrier disc 31, and a top magnetic block 36 fixedly connected at the top end of the plurality of connection rods 35; in the present embodiment, the suspension device arranged in the shot blasting chamber 20 adopts a first electromagnet, which attracts the top magnetic block 36 and suspends the whole suspension trolley 30 to a suitable height for shot blasting; it should be noted that the suspension device and the rotating device in the shot blasting chamber 20 are conventional arrangements in the technical field, and therefore the present applicant does not make redundant description; in actual application, the hanging part and the suspension device in the shot blasting chamber 20 can adopt other alternative structures having the same function.

[0048] The positioning mechanism 37 comprises a connecting cylinder 371, a sliding positioning rod 372, a fastening bolt 373 and a positioning cylinder fixed at the bottom of the shot blasting chamber 20; the sliding positioning rod 372 is slidingly inserted into the inner cavity of the connecting cylinder 371 and is fixed by the fastening bolt 373; after the suspension trolley 30 is suspended, the fastening bolt 373 is rotated to loosen the sliding positioning rod 372, and the sliding positioning rod 372 is lowered into the positioning cylinder to position the fixed disc 38 connected thereto and the bottom of the shot blasting chamber 20. In actual application, the positioning mechanism 37 can adopt other alternative structures with the same function.

[0049] The floating assembly comprises a floating spring 348 fixedly connected to the bottom of the inner support rod 342, and the bottom end of the floating spring 348 is fixed to the bottom of the inner cavity of the outer sleeve 341. When the gearbox shell is placed on the top of the support 34, under the action of its own weight, the floating spring 348 is compressed and floats downward until it is balanced, so that the gearbox shell and the top end of the support 34 are more closely attached.

[0050] The top of the hollow carrier disc 31 is provided with an insertion hole matched with the outer sleeve 341, the outer wall of the outer sleeve 341 is provided with a guide block 344, the inner wall of the insertion hole is provided with a guide groove matched with the guide block 344; the guide groove and the guide block 344 can vertically lift and guide the installation of the support 34, avoiding the horizontal rotation of the support 34 affecting the stability of its bearing.

[0051] The electromagnetic positioning assembly comprises a resistance sheet 345 and a magnetic resistance block 347, the magnetic resistance block 347 is slidingly inserted into the inner bottom end of the inner support rod 342, and the resistance sheet 345 is embeddedly fixed to the outer wall of the outer sleeve 341 and faces the magnetic resistance block 347; the electromagnetic positioning assembly further comprises a power box 32 provided on the hollow carrier disc 31, the top of the power box 32 is provided with a control switch, the inner wall of the insertion hole is embeddedly fixedly connected with a second electromagnet facing the magnetic resistance block 347, and the electromagnet is electrically connected with the power box 32 through wires. The working principle of the electromagnetic positioning assembly is as follows: after the gearbox shell is placed on the top of the support 34 and balanced, the control switch at the top of the power box 32 is turned on, the power box 32 supplies power to the second electromagnet, the second electromagnet generates magnetic attraction to attract the magnetic resistance block 347 to slide towards the resistance sheet 345, so that the magnetic resistance block 347 abuts against the resistance sheet 345, and under the friction resistance, the magnetic resistance block 347 plays a role in fixing the position of the inner support rod 342, thereby fixing the floating assembly in the support 34, ensuring the stability of the support of the gearbox shell during subsequent transportation and shot blasting sand cleaning.

[0052] In actual application, the floating assembly and the electromagnetic positioning assembly can adopt other alternative structures with the same function.

[0053] A sand cleaning method is applied to the gearbox shell blank sand cleaning device, and the sand cleaning method comprises the following steps:

[0054] S1, placing the gearbox shell: the whole suspension trolley 30 is pushed to the top of the base 10 through the supporting leg wheel 33, the fixing disc 38 is rotated to the appropriate position by rotating the positioning mechanism 37, so that the plurality of supporting members 34 are all at the same height, the gearbox shell is placed on the plurality of supporting members 34, and the plurality of supporting members 34 bear the gearbox shell to fix the position of the gearbox shell;

[0055] S2, sand cleaning preparation: the placed gearbox shell and the whole suspension trolley 30 are pushed into the shot blasting chamber 20, the shot blasting chamber 20 suspends the suspension trolley 30 and the gearbox shell, and the fixing disc 38 is positioned with the bottom of the shot blasting chamber 20 through the positioning mechanism 37;

[0056] S3, sand cleaning: the shot blasting chamber 20 rotates to clean the sand by suspending the suspension trolley 30, the fixing disc 38 is positioned with the bottom of the shot blasting chamber 20 through the positioning mechanism 37, the fixing disc 38 and the supporting member 34 rotate relatively, the plurality of supporting members 34 are lowered to expose the bottom bearing area of the gearbox shell one by one through the arc-shaped slot 381, and then the gearbox shell is fully cleaned.

[0057] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them.

Claims

1. A sand-removing device for a gearbox housing blank, comprising a base (10), wherein a shot blasting chamber (20) and a suspended trolley (30) are provided on the top of the base (10), characterized in that, The suspended trolley (30) includes a hollow tray (31), with a hanging component on the top of the hollow tray (31) and support wheels (33) on the bottom of the hollow tray (31). A fixed plate (38) is rotatably connected inside the hollow tray (31). An arc-shaped groove (381) is machined on the top of the fixed plate (38). Multiple support members (34) are provided on the top of the fixed plate (38), and the support members (34) can move through the top of the hollow tray (31). A positioning mechanism (37) is provided at the bottom of the fixed plate (38). Multiple support members (34) support the gearbox housing. The shot blasting chamber (20) suspends and rotates the suspended trolley (30) to clean sand through the hanging member. At the same time, the fixed plate (38) is positioned with the bottom of the shot blasting chamber (20) through the positioning mechanism (37), so that the fixed plate (38) and the support members (34) rotate relative to each other. Multiple support members (34) descend one by one through the arc-shaped groove (381) to expose the bottom bearing area of ​​the gearbox housing, thereby realizing the comprehensive sand cleaning of the gearbox housing.

2. The sand-removing device for a gearbox housing blank according to claim 1, characterized in that, The hanging component includes multiple connecting rods (35) fixedly connected to the top of a hollow carrier plate (31), and the top ends of the multiple connecting rods (35) are jointly fixedly connected to a top magnetic block (36).

3. The sand-removing device for a gearbox housing blank according to claim 1, characterized in that, The positioning mechanism (37) includes a connecting cylinder (371), a sliding positioning rod (372), a fastening bolt (373), and a positioning cylinder fixed to the bottom of the shot blasting chamber (20); The sliding positioning rod (372) is slidably inserted into the inner cavity of the connecting cylinder (371) and fixed by fastening bolts (373).

4. The sand-removing device for a gearbox housing blank according to claim 1, characterized in that, The support member (34) includes an outer sleeve (341) and an inner support rod (342), and the inner support rod (342) is slidably inserted into the inner wall of the outer sleeve (341). A ball bearing seat (346) is installed at the bottom end of the outer sleeve (341). The support member (34) also includes a floating component and an electromagnetic positioning component.

5. A sand-removing device for a gearbox housing blank according to claim 4, characterized in that, The top end of the inner support rod (342) is fixedly connected to a top plate (343), and the diameter of the top plate (343) is larger than the outer diameter of the outer sleeve (341).

6. The sand-removing device for a gearbox housing blank according to claim 4, characterized in that, The floating assembly includes a floating spring (348) fixedly connected to the bottom of the inner support rod (342), and the bottom end of the floating spring (348) is fixed to the bottom of the inner cavity of the outer sleeve (341).

7. A sand-removing device for a gearbox housing blank according to claim 4, characterized in that, The top of the hollow carrier (31) is provided with a plug hole that matches the outer sleeve (341). The outer wall of the outer sleeve (341) is provided with a guide block (344). The inner wall of the plug hole is provided with a guide groove, and the guide groove matches the guide block (344).

8. A sand-removing device for a gearbox housing blank according to claim 7, characterized in that, The electromagnetic positioning component includes a resistance plate (345) and a magnetic resistance block (347). The magnetic resistance block (347) is slidably inserted into the interior of the bottom end of the inner support rod (342). The resistance plate (345) is embedded and fixed to the outer wall of the outer sleeve (341) and faces the magnetic resistance block (347). The electromagnetic positioning assembly also includes a power supply box (32) mounted on a hollow carrier plate (31). A control switch is mounted on the top of the power supply box (32). A second electromagnet is embedded and fixedly connected to the inner wall of the plug hole, which is directly opposite the magnetic resistance block (347). The electromagnet is electrically connected to the power supply box (32) via a wire.

9. A method for cleaning sand, characterized in that, The sand removal method is applied to a sand removal device for a gearbox housing blank as described in any one of claims 1-8, and the sand removal method includes the following steps: S1. Placement of gearbox housing: The suspension trolley (30) is pushed to the top of the base (10) by the support leg wheels (33). The positioning mechanism (37) drives the fixed plate (38) to rotate to a suitable position so that the multiple support members (34) are all at the same height. The gearbox housing is placed on the multiple support members (34), and the multiple support members (34) support the gearbox housing to fix its position. S2. Preparation before sand removal: Push the placed gearbox housing and the suspension trolley (30) into the shot blasting chamber (20). The shot blasting chamber (20) suspends the suspension trolley (30) and the gearbox housing. At the same time, the fixed plate (38) is positioned with the bottom of the shot blasting chamber (20) through the positioning mechanism (37). S3. Sand Removal: The shot blasting chamber (20) removes sand by suspending and rotating the suspended trolley (30). At the same time, the fixed plate (38) is positioned with the bottom of the shot blasting chamber (20) through the positioning mechanism (37), so that the fixed plate (38) and the support (34) rotate relative to each other. Multiple support (34) descend one by one through the arc-shaped groove (381) to expose the bottom bearing area of ​​the gearbox housing, thereby achieving comprehensive sand removal of the gearbox housing.

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