Heavy-duty diesel engine valve end surfacing clamp

Abstract

The utility model relates to a clamp, in particular to a heavy-duty diesel engine valve end surfacing clamp which comprises a bottom adjusting seat, a mounting frame is arranged on the bottom adjusting seat, a lifting part is arranged on the mounting frame, and rotating parts are arranged on the mounting frame and the lifting part in a matched mode. Through the matched design of the mounting frame, the lifting piece and the rotating piece, valve rods with different lengths and sizes can be propped against and fixed for use, so that the valve rods are inserted into the propping column, the bottom of the propping column is propped against the transition fillets at the ends of the valve rods through the descending of the lifting piece, and the valve rods are fixed through the positioning piece. A valve head at the end of a valve can be placed in the positioning ring, the valve heads of multiple specifications can be correspondingly clamped in the positioning rings of proper sizes through the multiple positioning rings which are concentrically arranged and have different diameters, the valve rod and the valve head can be kept aligned in the center by being matched with downward pressing of the valve rod, and surfacing operation machining is met; and the air valve can be conveniently clamped and used.

Description

Technical Field

[0001] The utility model relates to a clamp, in particular to a clamp for surfacing welding of the end portion of a heavy-duty diesel engine valve. Background Art

[0002] The valve of a heavy-duty diesel engine is a key component in an internal combustion engine (especially a diesel engine). It is usually located in the cylinder head and regulates the intake of air and fuel and the discharge of exhaust gas after combustion by opening and closing. The operation of the valve directly affects the efficiency and performance of the engine. The valve end will wear after long-term operation. Valve end cladding is a repair and maintenance method mainly used to restore and enhance the performance of the valve end. At the same time, through the cladding process, a wear-resistant alloy valve head can be welded to the valve end, further improving the wear resistance effect.

[0003] At present, when the valve end of a heavy-duty diesel engine is being overlayed, a clamp is used to clamp the valve stem and the alloy valve head at the end so that the two can be kept in a centered and aligned state, which facilitates the overlay welding process. However, when the existing clamp is used to clamp the valve stem and the valve head at the valve end, the clamping steps are relatively cumbersome. It is necessary to control the movement of the clamping jaws to clamp the valve, which is inconvenient to operate and affects the convenient clamping effect. Utility Model Content

[0004] The purpose of the utility model is to provide a heavy-duty diesel engine valve end surfacing fixture to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A heavy-duty diesel engine valve end surfacing fixture includes: a bottom adjustment seat, a mounting frame is provided on the bottom adjustment seat, a lifting member is provided on the mounting frame, a rotating member is provided on the mounting frame and the lifting member, a positioning member is inserted into the rotating member, the positioning member is engaged with the end of the valve stem, and the valve stem is in contact with the rotating member.

[0007] The heavy-duty diesel engine valve end surfacing fixture as described above: the bottom adjustment seat includes a chassis, a connecting seat, a rack and an electric push rod, the connecting seats are symmetrically connected to the chassis, and a rack is slidingly inserted on the chassis between the two connecting seats. The rack is connected to the piston rod of the electric push rod, and the bottom of the electric push rod is connected to the boss on one side of the chassis.

[0008] The heavy-duty diesel engine valve end surfacing fixture as described above: the mounting frame includes a mounting plate, a rotating seat, a gear, a plug-in frame and a guide seat, the bottom of the mounting plate is symmetrically connected to the rotating seat, a gear is connected between the two rotating seats, one side of the mounting plate is connected to the plug-in frame, and one side of the plug-in frame is connected to the guide seat.

[0009] The heavy-duty diesel engine valve end surfacing fixture as described above: the two rotating seats are rotatably connected to the two connecting seats respectively, and the gear is meshed with the rack.

[0010] The heavy-duty diesel engine valve end surfacing fixture as described above: the lifting part includes a top plate, a connecting rod, a cylinder and a reinforcement frame, the connecting rod is symmetrically connected to one side of the top plate, a cylinder is arranged between the two connecting rods, the piston rod of the cylinder is connected to the top plate, and the reinforcement frame is fixedly arranged on the top plate.

[0011] The heavy-duty diesel engine valve end surfacing fixture as described above: the plug-in rod is slidably plugged into the plug-in frame, and the bottom of the cylinder is connected to the bottom inner wall of the plug-in frame.

[0012] The heavy-duty diesel engine valve end surfacing fixture as described above: the rotating part includes a servo motor, a prism, a transmission shaft, a resistance column, a rotating shaft and a rotating disk, the output shaft of the servo motor is connected to a transmission wheel, the transmission wheel is connected to a prism, the prism is slidably inserted in the transmission shaft, the transmission wheel on the output shaft of the servo motor is connected to the transmission wheel on the outer wall of the resistance column through a belt, the bottom of the transmission shaft is connected to a transmission wheel, the transmission wheel is connected to the transmission wheel provided on the rotating shaft through a belt, the rotating shaft is connected to a rotating disk, and the top annular array of the rotating disk is provided with four protrusions.

[0013] The heavy-duty diesel engine valve end surfacing fixture as described above: the servo motor is connected to the top plate, the transmission shaft is rotatably connected in the guide seat, the transmission wheel portion of the resistance column is rotatably connected in the slot hole opened in the top plate, the bottom outer wall of the resistance column is rotatably connected in the slot hole opened on the reinforcement frame, and the rotating shaft is rotatably connected in the cavity of the mounting plate.

[0014] The heavy-duty diesel engine valve end surfacing fixture as described above: the positioning part includes a positioning plate, a positioning ring and a spring, the bottom of the positioning plate is equipped with a corresponding slot for cooperating with the boss on the rotating plate, and several positioning rings of different diameters are concentrically arranged on the positioning plate, the bottom of the positioning ring is connected to the top end of several springs arranged at equal intervals, and the bottom end of the spring is connected to the inner wall of the cavity of the positioning plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] Through the coordinated design of the mounting frame, the lifting member and the rotating member, valve stems of different lengths can be fixed and used for interference, so that the valve stem is inserted into the interference column. By lowering the lifting member, the bottom of the interference column is in interference with the transition fillet at the end of the valve stem. The valve head at the end of the valve can be placed inside through the positioning member. By concentrically arranged several positioning rings of different diameters, valve heads of multiple specifications can be correspondingly engaged in positioning rings of suitable sizes. With the downward pressure of the valve stem, the valve stem and the valve head can be kept centered and aligned, which meets the requirements of the surfacing operation and improves the convenience of clamping the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the heavy-duty diesel engine valve end surfacing fixture.

[0018] Figure 2 This is a structural diagram of the bottom adjustment seat in the heavy-duty diesel engine valve end surfacing fixture.

[0019] Figure 3 This is a schematic diagram of the structure of the mounting frame in the heavy-duty diesel engine valve end surfacing fixture.

[0020] Figure 4 This is a schematic diagram of the structure of the lifting parts in the heavy-duty diesel engine valve end surfacing fixture.

[0021] Figure 5 This is a schematic diagram of the structure of the rotating parts in the heavy-duty diesel engine valve end surfacing fixture.

[0022] Figure 6 This is a schematic diagram of the structure of the valve stem in the valve end cladding fixture of a heavy-duty diesel engine.

[0023] Figure 7 This is a schematic diagram of the structure of the positioning parts in the heavy-duty diesel engine valve end surfacing fixture.

[0024] In the figure: 1. Bottom adjustment seat; 101. Chassis; 102. Connecting seat; 103. Rack; 104. Electric push rod; 2. Mounting frame; 201. Mounting plate; 202. Rotating seat; 203. Gear; 204. Plug-in frame; 205. Guide seat; 3. Lifting member; 301. Top plate; 302. Plug-in rod; 303. Cylinder; 304. Reinforcement frame; 4. Rotating member; 401. Servo motor; 402. Prism; 403. Drive shaft; 404. Resistance column; 405. Rotating shaft; 406. Rotating disk; 5. Positioning member; 501. Positioning disk; 502. Positioning ring; 503. Spring; 6. Valve stem. DETAILED DESCRIPTION

[0025] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0026] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0027] In addition, numerous specific details are provided in the following specific examples to better illustrate the present application. Those skilled in the art will appreciate that the present application can be practiced without certain specific details. In some instances, methods, means, and components well known to those skilled in the art are not described in detail in order to highlight the main purpose of the present application.

[0028] See also Figures 1 to 7 In an embodiment of the utility model, a heavy-duty diesel engine valve end surfacing fixture includes: a bottom adjusting seat 1, a mounting bracket 2 is provided on the bottom adjusting seat 1, a lifting member 3 is provided on the mounting bracket 2, a rotating member 4 is provided on the mounting bracket 2 and the lifting member 3, a positioning member 5 is provided on the rotating member 4, the positioning member 5 is engaged with the end of the valve stem 6, and the valve stem 6 is in conflict with the rotating member 4.

[0029] In this embodiment, the various components of the device are electrically connected to an external control device through a conductive line, and the operating state of the device is controlled by the external control device. First, when the valve end of the heavy-duty diesel engine is welded, the valve head is placed on the positioning member 5. Due to the design of several concentric positioning rings 502 with different diameters, a spring 503 is provided under each positioning ring 502. Therefore, when the valve head is centered on the positioning member 5, the positioning ring 502 of the corresponding diameter can be pressed down by the diameter of the valve head, so that the spring 503 is squeezed and contracted and maintains the rebound force. At this time, the inner walls of the remaining positioning rings 502 that have not been pressed down will limit the edge of the valve head to prevent the valve head from sliding horizontally on several positioning rings 502, ensuring that the valve head remains centered on the positioning member 5.

[0030] After that, the top plate 301 is lifted up and the height of the top plate 301 is raised, so that the reinforcement frame 304 is higher than the height of the valve stem 6, and then the end of the valve stem 6 is pressed against the valve head. At this time, the valve stem 6 is aligned with the center of the slot opened on the reinforcement frame 304 and the top plate 301, and the cylinder 303 is controlled to operate, so that the plug-in rod 302 descends in the insertion frame 204, and the top plate 301 and the reinforcement frame 304 will descend synchronously. Since the top plate 301 and the reinforcement frame 304 are rotated and provided with the interference column 404, the bottom of the interference column 404 will interfere with the transition fillet of the valve stem 6, thereby fixing the position of the valve stem 6, so that the valve stem 6 remains aligned with the valve head.

[0031] When the cylinder 303 is extended and retracted, the prism 402 will slide and plug in the transmission shaft 403 to meet the transmission requirements. Through the operation of the servo motor 401, the interference column 404 and the rotating disk 406 can be driven to rotate, so that the valve end can be fully welded when the valve is welded. The positioning member 5 can be easily disassembled and removed from the rotating disk 406, which is more convenient when the positioning member 5 of different diameters needs to be replaced, thereby improving the use effect. Through the extension and retraction of the electric push rod 104, the rack 103 can be translated, so that the rack 103 engages and drives the gear 203, so that the rotating seat 202 rotates on the connecting seat 102, controlling the inclination angle of the mounting frame 2 and the components installed on the mounting frame 2, to meet the adjustment of different welding angles. The technical solutions not mentioned in this solution are not currently disclosed technical solutions, so they will not be described in detail here.

[0032] As a further solution of the present invention, the bottom adjustment seat 1 includes a chassis 101, a connecting seat 102, a rack 103 and an electric push rod 104. The connecting seats 102 are symmetrically connected to the chassis 101. A rack 103 is slidingly inserted on the chassis 101 between the two connecting seats 102. The rack 103 is connected to the piston rod of the electric push rod 104, and the bottom of the electric push rod 104 is connected to the boss on one side of the chassis 101.

[0033] In this embodiment, the chassis 101 satisfies the overall ground support of the device. The coordinated design of the rack 103 and the electric push rod 104 can drive the mounting frame 2 to rotate and adjust on the connecting seat 102, control the tilt state of the mounting frame 2, and meet the adjustment requirements for surfacing welding on different valve ends.

[0034] As a further solution of the present invention, the mounting frame 2 includes a mounting plate 201, a rotating seat 202, a gear 203, a plug-in frame 204 and a guide seat 205. The bottom of the mounting plate 201 is symmetrically connected to the rotating seat 202, and a gear 203 is connected between the two rotating seats 202. One side of the mounting plate 201 is connected to the plug-in frame 204, and one side of the plug-in frame 204 is connected to the guide seat 205. The two rotating seats 202 are respectively rotatably connected to the two connecting seats 102, and the gear 203 is engaged with the rack 103.

[0035] In this embodiment, the guide seat 205 can keep the transmission shaft 403 in a vertical state to ensure the connection transmission effect. The rotating seat 202 is rotated and adjusted on the connecting seat 102. Through the kneading of the gear 203 and the rack 103, the rotating seat 202 can be rotated on the connecting seat 102 when the electric push rod 104 is telescopically adjusted, thereby controlling the overall tilt state of the mounting frame 2 to meet the adjustment needs of different surfacing angles.

[0036] As a further solution of the present invention, the lifting member 3 includes a top plate 301, a plug-in rod 302, a cylinder 303 and a reinforcement frame 304. The plug-in rod 302 is symmetrically connected to one side of the top plate 301, and a cylinder 303 is arranged between the two plug-in rods 302. The piston rod of the cylinder 303 is connected to the top plate 301, and a reinforcement frame 304 is fixedly arranged on the top plate 301. The plug-in rod 302 is slidably inserted in the plug-in frame 204, and the bottom of the cylinder 303 is connected to the bottom inner wall of the plug-in frame 204.

[0037] In this embodiment, when the cylinder 303 is operated and telescopically adjusted, it can control the plug-in rod 302 to rise and fall in the plug-in frame 204, so that the height of the top plate 301 is adjusted. The reinforcement frame 304 is used to reinforce the interference column 404 to ensure that the interference column 404 can maintain a vertical lifting state.

[0038] As a further solution of the present invention, the rotating member 4 includes a servo motor 401, a prism 402, a transmission shaft 403, a conflict column 404, a rotating shaft 405 and a rotating disk 406. The output shaft of the servo motor 401 is connected to a transmission wheel, and the transmission wheel is connected to the prism 402. The prism 402 is slidably inserted in the transmission shaft 403. The transmission wheel on the output shaft of the servo motor 401 is connected to the transmission wheel on the outer wall of the conflict column 404 through a belt. The bottom of the transmission shaft 403 is connected to a transmission wheel, and the transmission wheel is connected to the transmission wheel through a belt. The transmission wheels arranged on the rotating shaft 405 are connected in a transmission manner, the rotating shaft 405 is connected to a rotating disk 406, and the top ring array of the rotating disk 406 is provided with four bosses. The servo motor 401 is connected to the top plate 301, the transmission shaft 403 is rotatably connected in the guide seat 205, the transmission wheel portion of the resistance column 404 is rotatably connected in the slot hole opened on the top plate 301, the bottom outer wall of the resistance column 404 is rotatably connected in the slot hole opened on the reinforcement frame 304, and the rotating shaft 405 is rotatably connected in the cavity of the mounting plate 201.

[0039] In this embodiment, the servo motor 401 is connected to the top plate 301. Through the operation of the servo motor 401, the interference column 404 and the rotating disk 406 can rotate synchronously. The interference column 404 interferes with the valve stem 6, and the positioning member 5 placed on the rotating disk 406 limits the valve head. Therefore, when the interference column 404 and the rotating disk 406 rotate synchronously, the valve fixed on the device can perform a comprehensive surfacing operation on the whole body, thereby improving the convenience of surfacing.

[0040] As a further solution of the present invention, the positioning member 5 includes a positioning plate 501, a positioning ring 502 and a spring 503. The bottom of the positioning plate 501 is equipped with a corresponding slot to cooperate with the boss on the rotating plate 406. Several positioning rings 502 of different diameters are concentrically arranged on the positioning plate 501. The bottom of the positioning ring 502 is connected to the top end of several springs 503 arranged at equal intervals, and the bottom end of the spring 503 is connected to the inner wall of the cavity of the positioning plate 501.

[0041] In this embodiment, through the design of the positioning member 5, the valve head of the corresponding diameter can be conveniently fixed and limited, which is convenient for clamping and fixing the valve when the valve head is end-welded on the valve stem 6, and convenient for loading and unloading the valve on the device. Compared with traditional valve clamps, the use of this device is more convenient.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0043] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A heavy-duty diesel engine valve end surfacing fixture, characterized in that: include: A bottom adjustment seat (1), wherein a mounting frame (2) is provided on the bottom adjustment seat (1), a lifting member (3) is provided on the mounting frame (2), a rotating member (4) is provided on the mounting frame (2) and the lifting member (3), a positioning member (5) is provided on the rotating member (4), the positioning member (5) is engaged with the end of the valve stem (6), and the valve stem (6) is provided in abutment with the rotating member (4); The bottom adjustment seat (1) comprises a chassis (101), a connecting seat (102), a rack (103) and an electric push rod (104); the connecting seat (102) is symmetrically connected to the chassis (101); a rack (103) is slidably inserted on the chassis (101) between the two connecting seats (102); the rack (103) is connected to the piston rod of the electric push rod (104); and the bottom of the electric push rod (104) is connected to a boss on one side of the chassis (101).

2. A heavy-duty diesel engine valve end surfacing fixture according to claim 1, characterized in that: The mounting frame (2) comprises a mounting plate (201), a rotating seat (202), a gear (203), a plug-in frame (204) and a guide seat (205); the bottom of the mounting plate (201) is symmetrically connected to the rotating seat (202); a gear (203) is connected between the two rotating seats (202); one side of the mounting plate (201) is connected to the plug-in frame (204); and one side of the plug-in frame (204) is connected to the guide seat (205).

3. A heavy-duty diesel engine valve end surfacing fixture according to claim 2, characterized in that: The two rotating seats (202) are respectively rotatably connected to the two connecting seats (102), and the gear (203) is meshed with the rack (103).

4. A heavy-duty diesel engine valve end surfacing fixture according to claim 1, characterized in that: The lifting member (3) comprises a top plate (301), a plug-in rod (302), a cylinder (303) and a reinforcement frame (304); one side of the top plate (301) is symmetrically connected to the plug-in rod (302); a cylinder (303) is provided between the two plug-in rods (302); a piston rod of the cylinder (303) is connected to the top plate (301); and a reinforcement frame (304) is fixedly provided on the top plate (301).

5. A heavy-duty diesel engine valve end surfacing fixture according to claim 4, characterized in that: The plug-in rod (302) is slidably plugged into the plug-in frame (204), and the bottom of the cylinder (303) is connected to the bottom inner wall of the plug-in frame (204).

6. A heavy-duty diesel engine valve end surfacing fixture according to claim 1, characterized in that: The rotating member (4) comprises a servo motor (401), a prism (402), a transmission shaft (403), a contact column (404), a rotating shaft (405) and a rotating disk (406). The output shaft of the servo motor (401) is connected to a transmission wheel, the transmission wheel is connected to the prism (402), the prism (402) is slidably inserted into the transmission shaft (403), the transmission wheel on the output shaft of the servo motor (401) is connected to the transmission wheel on the outer wall of the contact column (404) through a belt, the bottom of the transmission shaft (403) is connected to a transmission wheel, the transmission wheel is connected to the transmission wheel provided on the rotating shaft (405) through a belt, the rotating shaft (405) is connected to a rotating disk (406), and the top of the rotating disk (406) is provided with four convex columns in an annular array.

7. A heavy-duty diesel engine valve end surfacing fixture according to claim 6, characterized in that: The servo motor (401) is connected to the top plate (301), the transmission shaft (403) is rotatably connected in the guide seat (205), the transmission wheel portion of the resistance column (404) is rotatably connected in a slot hole opened in the top plate (301), the bottom outer wall of the resistance column (404) is rotatably connected in a slot hole opened in the reinforcement frame (304), and the rotation shaft (405) is rotatably connected in the cavity of the mounting plate (201).

8. The heavy-duty diesel engine valve end surfacing fixture according to claim 1, characterized in that: The positioning member (5) includes a positioning plate (501), a positioning ring (502) and a spring (503). The bottom of the positioning plate (501) is provided with a corresponding slot for cooperating with the boss on the rotating plate (406). A plurality of positioning rings (502) of different diameters are concentrically arranged on the positioning plate (501). The bottom of the positioning ring (502) is connected to one end of the top of a plurality of springs (503) arranged at equal intervals. The bottom end of the spring (503) is connected to the inner wall of the cavity of the positioning plate (501).

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