CN116117454A - Hot charging process for heavy mine car suspension assembly - Google Patents
Hot charging process for heavy mine car suspension assembly Download PDFInfo
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- CN116117454A CN116117454A CN202310395518.9A CN202310395518A CN116117454A CN 116117454 A CN116117454 A CN 116117454A CN 202310395518 A CN202310395518 A CN 202310395518A CN 116117454 A CN116117454 A CN 116117454A
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- Prior art keywords
- crankshaft
- bracket
- driving
- assembly
- frame
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
- B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
- B23P11/025—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold
Abstract
The invention provides a heavy mine car suspension assembly hot charging process. And the polishing device is used for polishing the processing surface of the end part of the crankshaft, so that the finish machining time of the crankshaft is reduced as a whole. The bracket adopts a numerical control machine tool to process a mounting hole of the crankshaft. Before the bracket is assembled with the crankshaft, the bracket is required to be placed in the heating device for heating, the crankshaft is placed on the assembly frame after the temperature is kept for a period of time, and the bracket is placed on a pulley on the assembly frame. The position of the bracket on the pulley is adjusted, so that the mounting hole on the bracket is aligned with the end part of the crankshaft, and the pulley is pushed to drive the bracket to move, so that the end part of the crankshaft slides into the mounting hole of the bracket. And the support is kept to be tightly propped against the crankshaft, and the connection between the crankshaft and the support can be completed after the support is cooled. Convenient operation, installation are convenient, effectively use manpower sparingly and improve machining efficiency.
Description
Technical Field
The invention belongs to the technical field of assembly of suspension assemblies, and particularly relates to a hot charging process of a heavy mine car suspension assembly.
Background
The suspension assembly is used as a key part of the mining vehicle to transfer the load of the frame to the rear axle, comprises a bent axle and a bracket, and is usually cast separately from the bracket and is mounted on the bent axle after being machined. In order to ensure the stability of the installation of the bent axle and the bracket, the end part of the bent axle is in interference fit with the installation hole on the bracket. Therefore, during processing, the dimensional accuracy error between the bent axle end and the mounting hole needs to be ensured to be in a small range. And special equipment is needed to be adopted to press the end part of the bent shaft into the mounting hole on the bracket in the assembly process. The operation process is complex and the assembly efficiency is low.
Disclosure of Invention
The embodiment of the invention provides a hot charging process for a suspension assembly of a heavy mine car, which aims to solve the problems that the suspension assembly in the prior art is complex to operate and has low assembly efficiency.
In order to achieve the above purpose, the invention adopts the following technical scheme: a hot charging process for a heavy mine car suspension assembly is provided, which comprises the following steps:
step 3, heating the support, placing the support into a heating device, starting the heating device to control the temperature to be 180-260 ℃, and preserving the temperature of the support;
and 4, assembling, namely placing the bracket on an assembly frame after heating, arranging two pulleys sliding along the axial direction of the end part of the crankshaft on the assembly frame, and installing the bracket on the end part of the crankshaft by pushing the pulleys and keeping a propping state, wherein after the bracket is cooled, the connection and fixation between the crankshaft and the bracket are realized.
In one possible implementation manner, the axial direction of the end part of the crankshaft is defined as a first direction when the crankshaft is placed on the assembly frame, two V-shaped frames for supporting the two ends of the crankshaft are arranged on the assembly frame at intervals along the first direction, and projections of the V-shaped frames along the first direction are overlapped with each other.
In one possible implementation, when defining the position of the central hole of the end portion of the crankshaft, the two ends of the crankshaft overlap respectively inside the two V-shaped frames.
In one possible implementation, when the crankshaft is assembled with the bracket, the bracket at one end of the crankshaft is firstly mounted on the crankshaft, the pulley at the end is propped against the V-shaped bracket through the propping assembly, and then the bracket at the other end is mounted.
In one possible implementation manner, a driving assembly for driving the pulley to slide on the assembly frame is further arranged between the assembly frame and the pulley, and the driving assembly comprises:
one end of the first supporting rod is hinged to one of the pulleys;
one end of the second supporting rod is hinged with the other end of the first supporting rod, the other end of the second supporting rod is hinged on the other pulley, and the hinge shafts of the first supporting rod and the second supporting rod are arranged on the assembly frame in a sliding manner along the vertical direction;
the fixed part of the driving piece is hinged to the assembly frame, and the driving end of the driving piece is hinged to the hinge shaft between the first supporting rod and the second supporting rod.
In one possible implementation, in step 4, when the bracket is placed on the pulley, the position of the bracket is adjusted by an adjusting assembly to make the mounting hole on the bracket and the end of the crankshaft be in a coaxial state, the adjusting assembly includes:
the conical block is mounted on the assembly frame, has freedom degree which is adjusted along the vertical direction on the assembly frame, and the axis of the conical block is positioned on the symmetrical central plane of the two positioning inclined planes of the V-shaped frame;
the plurality of positioning rods are arranged in parallel at intervals, and the axes of the plurality of positioning rods are arranged along the sliding direction of the pulley;
the pushing assembly is arranged on the assembly frame and used for pushing the support to move towards the direction close to the positioning rod.
In one possible implementation, the end of the conical block is also fixedly provided with a beam emitter, and the beam emitted by the beam emitter is coaxially arranged with the conical block.
In one possible implementation, the method further includes machining a center hole after defining a position of the center hole at the end of the crankshaft, where the center hole is machined by using a turning tool, where the turning tool includes:
the base is fixedly arranged on the working surface of the drilling machine;
the rotating shaft is rotatably arranged on the base, and the axis of the rotating shaft is arranged along the horizontal direction;
the middle part of the fixed arm is fixedly connected with one end of the rotating shaft; the fixed arm and the rotating shaft are mutually perpendicular;
the fixing assembly is arranged on the fixing arm and used for fixing the bent axle on the fixing arm;
the fixed seat is fixedly arranged on a workbench of the drilling machine;
the limiting rod is hinged to the fixing base, a locating groove which is in sliding fit with the limiting rod is formed in the fixing arm, and when the fixing arm rotates to a vertical state, the limiting rod can slide into the locating groove.
In one possible implementation, the polishing apparatus includes:
an operation table;
the guide rod is rotatably arranged on the operating platform;
the sliding frame is arranged on the guide rod in a sliding manner along the length direction of the guide rod, a driving wheel and a driven wheel are rotatably arranged on the sliding frame, and the axes of the driving wheel and the driven wheel are mutually parallel and are arranged along the length direction of the guide rod;
the rotating piece is arranged on the sliding frame, and a driving shaft of the rotating piece is in transmission connection with the driving wheel and is used for driving the driving wheel to rotate on the sliding frame;
the polishing belt is connected between the driving wheel and the driven wheel, and the driving wheel and the driven wheel synchronously move through the polishing belt;
the main shaft seat is fixedly arranged on the operating platform, a driving shaft is rotatably arranged on the main shaft seat, and the axis of the driving shaft is arranged along the length direction of the guide rod;
the tailstock and the main shaft seat are fixed on the operating platform at intervals along the axial direction of the driving shaft, and a center which is coaxially arranged with the driving shaft is arranged on the tailstock;
the driving end of the power piece is in transmission connection with the driving shaft and is used for driving the driving shaft to rotate on the main shaft seat.
Compared with the prior art, the scheme of the embodiment of the application has the advantages that the crankshaft is integrally cast and formed, the positions of central holes at the end parts of the crankshaft are defined at the two ends of the crankshaft according to blank division, the central holes are used as centers, and rough turning and finish turning of the crankshaft in place according to required tolerance dimensions are performed on a lathe. And the polishing device is used for polishing the processing surface of the end part of the crankshaft, so that the finish machining time of the crankshaft is reduced as a whole. The bracket adopts a numerical control machine tool to process a mounting hole of the crankshaft, so that the outer dimension of the end part of the crankshaft is in interference fit with the inner diameter dimension of the mounting hole on the bracket. Before the bracket is assembled with the crankshaft, the bracket is required to be placed in the heating device for heating, the crankshaft is placed on the assembly frame after the temperature is kept for a period of time, and the bracket is placed on a pulley on the assembly frame. The position of the bracket on the pulley is adjusted, so that the mounting hole on the bracket is aligned with the end part of the crankshaft, and the pulley is pushed to drive the bracket to move, so that the end part of the crankshaft slides into the mounting hole of the bracket. And the support is kept to be tightly propped against the crankshaft, and the connection between the crankshaft and the support can be completed after the support is cooled. Convenient operation, installation are convenient, effectively use manpower sparingly and improve machining efficiency.
Drawings
Fig. 1 is a schematic structural diagram of an assembly frame according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a pushing assembly according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a driving assembly according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an overturning tool according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a polishing apparatus according to an embodiment of the present invention.
Reference numerals illustrate:
1. an assembly frame; 11. a pulley; 12. a V-shaped frame; 2. a jacking component; 21. a push rod; 22. a tightening member; 3. a drive assembly; 31. a first strut; 32. a second strut; 33. a driving member; 4. an adjustment assembly; 41. a conical block; 411. a beam emitter; 42. a positioning rod; 43. a pushing assembly; 431. a driving arm; 432. a pulling arm; 5. overturning the tool; 51. a base; 52. a rotating shaft; 53. a fixed arm; 531. a fixing assembly; 54. a fixing seat; 55. a limit rod; 6. a polishing device; 61. an operation table; 62. a guide rod; 63. a carriage; 631. a driving wheel; 632. driven wheel; 633. a polishing belt; 634. a rotating member; 64. a spindle base; 65. a tailstock; 66. a power piece.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, 2 and 3, a hot charging process of the heavy-duty mine car suspension assembly provided by the invention will now be described. The hot charging process of the heavy mine car suspension assembly comprises the steps of 1, machining a crankshaft, defining the position of a central hole of the end part of the crankshaft, roughly turning and finely turning the end part of the crankshaft by taking the central holes of two ends as references, polishing the end part of the crankshaft by a polishing device 6, and placing the crankshaft on an assembly frame 1 after the machining is finished;
step 3, heating the support, placing the support into a heating device, starting the heating device to control the temperature to be 180-260 ℃, and preserving the temperature of the support;
and 4, assembling, namely placing the bracket on the assembly frame 1 after heating, arranging two pulleys 11 sliding along the axial direction of the end part of the crankshaft on the assembly frame 1, and installing the bracket on the end part of the crankshaft by pushing the pulleys 11 and keeping a propped state, wherein after the bracket is cooled, the connection and fixation between the crankshaft and the bracket are realized.
Compared with the prior art, the hot charging process for the heavy mine car suspension assembly has the advantages that the crankshaft is integrally cast and formed, the positions of central holes at the end parts of the crankshaft are defined at the two ends of the crankshaft according to blank division, the central holes are used as centers, and rough turning and finish turning of the crankshaft in place according to required tolerance dimensions are performed on a lathe. And the polishing device 6 is adopted to polish the processing surface of the end part of the crankshaft, so that the roughness of the processing surface of the end part of the crankshaft is reduced. And the machining of a grinding machine is avoided, and the finish machining time of the crankshaft is reduced as a whole. The bracket adopts a numerical control machine tool to process a mounting hole of the crankshaft, so that the outer dimension of the end part of the crankshaft is in interference fit with the inner diameter dimension of the mounting hole on the bracket. Before the bracket is assembled with the crankshaft, the bracket is required to be placed in the heating device for heating, the crankshaft is placed on the assembly frame 1 after a period of heat preservation, and the bracket is placed on the pulley 11 on the assembly frame 1. The position of the bracket on the pulley 11 is adjusted to enable the mounting hole on the bracket to be aligned with the end part of the crankshaft, and the end part of the crankshaft slides into the mounting hole of the bracket by pushing the pulley 11 to drive the bracket to move. And the support is kept to be tightly propped against the crankshaft, and the connection between the crankshaft and the support can be completed after the support is cooled. Convenient operation, installation are convenient, effectively use manpower sparingly and improve machining efficiency.
In some embodiments, the mounting bracket 1 may have a structure as shown in fig. 1. Referring to fig. 1, defining an axial direction of an end portion of a crankshaft as a first direction when the crankshaft is placed on the mounting frame 1, two V-shaped frames 12 for supporting both ends of the crankshaft are arranged on the mounting frame 1 at intervals along the first direction, and projections of the V-shaped frames 12 along the first direction are arranged to overlap each other. Two V-shaped frames 12 are arranged on the assembly frame 1, a crankshaft can be placed on the V-shaped frames 12, and two ends of the crankshaft are positioned in V-shaped grooves on the V-shaped frames 12. The scribing and assembling processes can be completed on the assembling frame 1.
Specifically, in this embodiment, the width direction of the mounting rack 1 is defined as a second direction, and the second direction and the first direction are both disposed along a horizontal direction and are disposed perpendicular to each other. Two positioning posts are also fixedly mounted between the two V-shaped frames 12. The two positioning columns are arranged at intervals along the second direction to form a clamping groove for clamping the middle part of the crankshaft. The position of the crankshaft can be further located when the crankshaft is placed on the mounting bracket 1.
In some embodiments, the crankshaft may take the configuration shown in FIG. 1 when defining the central bore. Referring to fig. 1, in defining the center hole position of the end portion of the crankshaft, both ends of the crankshaft overlap the inside of the two V-frames 12, respectively. When both ends of the crankshaft are located inside the V-shaped frame 12, the axis of the crankshaft end is located on the symmetrical center plane of the two positioning slopes of the V-shaped frame 12, thereby facilitating determination of the position of the crankshaft end in the horizontal direction and perpendicular to the first direction. In the scribing process, only the heights of the blank surfaces on the outer sides of the crankshafts on the symmetrical center surfaces of the two positioning inclined surfaces of the V-shaped frame 12, namely the values of the highest point and the lowest point along the vertical direction, are measured, and the intersection point between the values obtained by (the highest point value-the lowest point value)/2+ the lowest point value and the symmetrical center surfaces of the two positioning inclined surfaces of the V-shaped frame 12 is the position of the center hole.
Optionally, in this embodiment, graduation marks which are coincident with the symmetrical central planes of the two positioning inclined planes of the V-shaped frame 12 are provided on the pulley 11, and an operator can place the position of the height ruler according to the graduation marks. When the position of the central hole is defined, the height ruler is placed on the pulley 11 according to the position of the scale marks, the pulley 11 is moved to enable the measuring part of the height ruler to be close to the end part of the crankshaft, the numerical values of the highest point and the lowest point of the blank surface of the crankshaft in the vertical direction are measured, and the position of the central hole of the crankshaft is calculated.
In some embodiments, the crankshaft and bracket mounting process may take the configuration shown in FIG. 1. Referring to fig. 1, when the crankshaft is assembled with the bracket, the bracket at one end of the crankshaft is first mounted on the crankshaft, and the pulley 11 at the end is abutted against the V-shaped frame 12 by the abutment assembly 2, and then the bracket at the other end is mounted. When the crankshaft is mounted on the V-shaped frame 12, the step between the machined surface and the blank surface of the crankshaft is abutted against the side surface of the V-shaped frame 12, and when the pushing support is mounted on the crankshaft, the crankshaft can be limited through the step. Enabling the bracket to be mounted in place. And the pulley 11 arranged in place is tightly propped against the installation position through the propping assembly 2, so that the pulley 11 is prevented from driving the bracket to move, and the position accuracy between the crankshaft and the bracket is prevented from being influenced. Simultaneously, the pulley 11 is propped up, and the support on the pulley 11 is propped up against the crankshaft on the V-shaped frame 12, so that the displacement of the crankshaft can be avoided when the support at the other end is installed, and the stability of the position of the crankshaft when the support is assembled is ensured.
Alternatively, in this embodiment, the jack assembly 2 includes a jack 21 that is hinged to the mounting frame 1, and a jack 22 that is screwed to an end of the jack 21, and the jack 22 can be abutted against the pulley 11 by rotating the jack 21, and the pulley 11 can be kept in a jack state by rotating the jack 22.
Optionally, a tightening assembly 2 is arranged at both ends of the assembly frame 1 corresponding to the two pulleys 11. And the ejector rod 21 can be abutted against the end of the crankshaft to ensure the stability of the position of the crankshaft.
In some embodiments, the mounting rack 1 may have a structure as shown in fig. 1 and 3. Referring to fig. 1 and 3, a driving component 3 for driving the pulley 11 to slide on the assembly frame 1 is further arranged between the assembly frame 1 and the pulley 11, and the driving component 3 comprises a first supporting rod 31, a second supporting rod 32 and a driving piece 33. A first strut 31 having one end hinged to one of the pulleys 11; one end of the second supporting rod 32 is hinged with the other end of the first supporting rod 31, the other end of the second supporting rod is hinged on the other pulley 11, and the hinge shafts of the first supporting rod 31 and the second supporting rod 32 are arranged on the assembly frame 1 in a sliding manner along the vertical direction; the fixed part of the driving piece 33 is hinged on the assembly frame 1, and the driving end of the driving piece 33 is hinged on a hinge shaft between the first supporting rod 31 and the second supporting rod 32. The driving member 33 employs a hydraulic cylinder. The trolley 11 above the first strut 31 is defined as a first trolley 11 and the trolley 11 above the second strut 32 is defined as a second trolley 11. Limiting tables for preventing the pulley 11 from sliding off the mounting frame 1 are arranged at two ends of the mounting frame 1 along the first direction. In operation, the bracket is preferentially mounted on the second pulley 11, the first pulley 11 is abutted against the limiting table, and the position of the first pulley 11 is fixed. And the driving rod of the driving piece 33 is started to move outwards, the hinge shaft between the first supporting rod 31 and the second supporting rod 32 swings downwards to drive the second pulley 11 to move towards the direction close to the crankshaft, after the crankshaft on the second pulley 11 is installed in place, the second pulley 11 is tightly propped against the assembly frame 1 through the propping assembly 2, the driving piece 33 is started to move continuously, the second pulley 11 cannot move, the first pulley 11 is loosened, so that the hinge shafts on the first supporting rod 31 and the second supporting rod 32 swing downwards continuously, and the first pulley 11 is driven to move towards the direction close to the crankshaft. After assembly is completed, the jacking assembly 2 is loosened and the drive rod of the drive member 33 is controlled to retract, causing the hinge axes on the first and second struts 31, 32 to move upwardly and the two pulleys 11 to move toward the ends of the assembly frame 1. The present application can employ the switching of the operation state of one driving member 33 to simultaneously complete the assembly of two brackets.
Specifically, in the present embodiment, the first and second struts 31 and 32 share the same hinge axis with the driving end of the driving member 33.
In some embodiments, the mounting bracket 1 may adopt the structure shown in fig. 1 and 2. Referring to fig. 1 and 2 together, in step 4, when the bracket is placed on the pulley 11, the position of the bracket is adjusted by the adjusting assembly 4 so that the mounting hole on the bracket and the end of the crankshaft are in a coaxial state, and the adjusting assembly 4 includes a tapered block 41, a positioning rod 42 and a pushing assembly 43. The conical block 41 is mounted on the assembly frame 1, the conical block 41 has the freedom degree of adjustment along the vertical direction on the assembly frame 1, and the axis of the conical block 41 is positioned on the symmetrical central plane of the two positioning inclined planes of the V-shaped frame 12; the number of the positioning rods 42 is multiple, the positioning rods 42 are arranged in parallel at intervals, and the axes of the positioning rods 42 are all arranged along the sliding direction of the pulley 11; a pushing assembly 43 is provided on the mounting bracket 1 for pushing the bracket to move in a direction approaching the positioning rod 42. When the bracket is placed on the trolley 11, the end of the positioning rod 42 abuts against the side wall of the bracket to achieve rough positioning of the bracket position, and the bracket can be supported during the bracket assembly process through the positioning rod 42. The conical block 41 is coaxial with the end of the bent axle, and the conical block 41 can further position the position of the bracket when sliding into the mounting hole on the bracket. Which facilitates adjustment of the position of the carriage on the trolley 11.
Preferably, in this embodiment, the maximum outer diameter of the tapered block 41 is 1-5 mm smaller than the mounting hole on the bracket, so that the bracket can be prevented from warping on the pulley 11, and the bracket can be mounted through the mounting hole and the chamfer guiding blade at the end of the crankshaft.
Specifically, in the present embodiment, the pushing assembly 43 includes a driving arm 431 slidably disposed on the mounting frame 1 in the first direction, and a poking arm 432 is hinged at both ends of the driving arm 431, respectively, and a middle portion of the poking arm 432 is hinged on the mounting frame 1. And a pushing piece for driving the driving arm 431 to slide is further arranged between the assembly frame 1 and the driving arm 431, and the pushing piece is a hydraulic cylinder. In the working state, the driving arm 431 can be controlled to slide to drive the shifting arm 432 to swing, and the bracket is driven to move towards the direction approaching the conical block 41.
Alternatively, in the present embodiment, the driving arm 431 is hinged to the bottom ends of the two toggle arms 432, and the two toggle arms 432 gradually incline from bottom to top in directions approaching each other. When one of the driving arms 431 is in the working state, the other driving arm 431 can be in the storage state, and the placement of the other bracket is not affected.
In some embodiments, the tapered block 41 may have a structure as shown in fig. 1. Referring to fig. 1, the end of the tapered block 41 is also fixedly provided with a beam emitter 411, and the beam emitted by the beam emitter 411 is disposed coaxially with the tapered block 41. The beam emitter 411 is installed inside the tapered block 41, and the beam emitted by the beam emitter 411 is disposed in a first direction. Avoiding the damage of the light beam emitter 411, when the height of the conical block 41 is adjusted, the position of the conical block 41 can be conveniently aligned by observing whether the light beam emitted by the light beam emitter 411 is aligned with the center hole machined at the end part of the crankshaft.
Preferably, in the present embodiment, the beam emitter 411 employs an infrared beam emitter 411.
In some embodiments, the overturning tool 5 may have a structure as shown in fig. 4. Referring to fig. 4, after defining the position of the central hole at the end of the crankshaft, the central hole is machined by adopting a turnover tool 5, and the turnover tool 5 comprises a base 51, a rotating shaft 52, a fixing arm 53, a fixing assembly 531, a fixing seat 54 and a limiting rod 55. The base 51 is fixedly arranged on the working surface of the drilling machine; the rotating shaft 52 is rotatably arranged on the base 51, and the axis of the rotating shaft 52 is arranged along the horizontal direction; the middle part of the fixed arm 53 is fixedly connected with one end of the rotating shaft 52; the fixed arm 53 and the rotating shaft 52 are arranged perpendicular to each other; the fixing component 531 is arranged on the fixing arm 53 and is used for fixing the bent axle on the fixing arm 53; the fixed seat 54 is fixedly arranged on a workbench of the drilling machine; the stop lever 55 is hinged on the fixed seat 54, the fixed arm 53 is provided with a positioning groove in sliding fit with the stop lever 55, and when the fixed arm 53 rotates to a vertical state, the stop lever 55 can slide into the positioning groove. By digging out a space for avoiding the rotation of the fixed arm 53 on the ground on one side of the drilling machine. By fixedly mounting the base 51 to the working surface of the drill press. The fixed arm 53 is allowed to rotate on one side of the working face of the drill press, and during machining, a bent shaft is fixedly mounted to the fixed arm 53 by a fixing member 531, and axes of both ends of the bent shaft are arranged along the length direction of the fixed arm 53. The fixing arm 53 is positioned in a vertical state by rotating the fixing arm 53, and the fixing arm 53 is fixed on the drilling machine by rotating the limit rod 55 to the inside of the positioning groove, so that the axis of the bent shaft end part is positioned in a vertical state, and drilling processing is performed. After one end is machined, the fixed arm 53 is rotated 180 degrees, and then the hole site of the second end is machined. The number of times of hoisting and clamping the bent shaft is effectively reduced, and the production efficiency of bent shaft processing is improved.
Specifically, in the present embodiment, the fixing assembly 531 includes an arc plate, a fixing lever, and a tightening member. One end of the arc-shaped plate is hinged on the fixed arm 53; one end of the fixed rod is fixedly arranged on the fixed arm 53, and the other end of the arc-shaped plate is provided with an opening groove for accommodating the fixed rod; the tightening piece is in threaded connection with the fixing rod, and when the fixing rod is positioned in the opening groove, the tightening piece can be abutted against the arc plate. The fixing members 531 are divided into two groups, and the two groups of fixing members 531 are arranged at intervals along the length direction of the fixing arm 53. The axis of the hinge shaft of the arc plate is arranged along the length direction of the fixed arm 53. When the bent axle is mounted, the end of the bent axle may be moved to the fixing arm 53. And the fixing rod is positioned in the opening groove by rotating the arc plate, and the arc plate is pressed on the fixing arm 53 by the tightening piece, so that the fixing of the bent axle is completed.
In some embodiments, the polishing apparatus 6 may have a structure as shown in fig. 5. Referring to fig. 5, the polishing apparatus 6 includes an operation table 61, a guide bar 62, a carriage 63, a rotating member 634, a polishing belt 633, a spindle stock 64, a tailstock 65, and a power member 66. The guide lever 62 is rotatably provided on the operation table 61; the sliding frame 63 is slidably arranged on the guide rod 62 along the length direction of the guide rod 62, a driving wheel 631 and a driven wheel 632 are rotatably arranged on the sliding frame 63, and the axes of the driving wheel 631 and the driven wheel 632 are mutually parallel and are arranged along the length direction of the guide rod 62; the rotating member 634 is mounted on the sliding frame 63, and a driving shaft of the rotating member 634 is in transmission connection with the driving wheel 631 and is used for driving the driving wheel 631 to rotate on the sliding frame 63; the polishing belt 633 is connected between the driving wheel 631 and the driven wheel 632, and the driving wheel 631 and the driven wheel 632 are synchronously moved by the polishing belt 633; the spindle seat 64 is fixedly arranged on the operating table 61, a driving shaft is rotatably arranged on the spindle seat 64, and the axis of the driving shaft is arranged along the length direction of the guide rod 62; the tailstock 65 and the spindle seat 64 are fixed on the operating table 61 at intervals along the axial direction of the driving shaft, and a center coaxially arranged with the driving shaft is arranged on the tailstock 65; the driving end of the power member 66 is in driving connection with the driving shaft for driving the driving shaft to rotate on the spindle base 64. When in use, the bent axle can be positioned between the tail seat 65 and the driving shaft on the main shaft seat 64 through the center holes at the two ends of the bent axle, so that the same standard is ensured during polishing and lathe machining. And the driving shaft is driven to rotate by the power piece 66 so as to drive the bent shaft to rotate, the polishing belt 633 polishes the end part of the bent shaft by rotating the sliding frame 63, and the sliding frame 63 moves along the length direction of the guide rod 62 to polish a plurality of parts. Avoiding the processing of the prior grinding machine and improving the working efficiency.
Specifically, in this embodiment, the tailstock 65 is a tailstock 65 with the same structure on the lathe, and the internal structure is not described here.
Optionally, the outside cover of guide bar 62 is equipped with the slip cap, and the both ends of slip cap all rotate and are provided with the leading wheel, and the outer lane laminating of leading wheel is on the lateral wall of guide bar 62, and the axis of leading wheel sets up perpendicularly to the length direction of guide bar 62. The sliding sleeve is sleeved on the outer side of the guide rod 62, and the sliding frame 63 is fixedly installed on the sliding sleeve. There is the clearance between slip cap and the guide bar 62, makes the slip cap wholly slide and set up on the guide bar 62 through the support of leading wheel, can reduce the area of contact of slip cap and guide bar 62 on the one hand to reduce the frictional force of slip cap on the guide bar 62, more be convenient for the operating personnel promote the carriage 63 and slide on the guide bar 62.
Specifically, in this embodiment, guide wheels are disposed at two ends of the sliding sleeve, and a plurality of guide wheels are disposed at each end of the sliding sleeve, and the plurality of guide wheels are disposed around the outer side of the sliding sleeve, so as to support the sliding sleeve in multiple directions.
Preferably, the guide bar 62 has a polygonal cross section perpendicular to the length direction thereof, and the end of the sliding sleeve is rotatably provided with a plurality of guide wheels which respectively abut against the side surfaces of the guide bar 62. Preferably, the guide bar 62 is machined from square tubing and the sliding sleeve is square tubing that matches the profile of the guide bar 62. And a rib plate is fixedly arranged on the outer side surface of the end part of the sliding sleeve, the rib plate is perpendicular to the side wall of the sliding sleeve and extends out of the end part of the sliding sleeve, and the guide wheel is rotated and arranged on the rib plate. By designing the guide rod 62 and the slide bush in a polygonal structure, the slide frame 63 can be prevented from rotating relative to the guide rod 62.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (9)
1. A heavy mining vehicle suspension assembly hot charging process, comprising:
step 1, machining a crankshaft, namely, defining the position of a central hole at the end part of the crankshaft, machining, roughly turning and finely turning the end part of the crankshaft by taking the central holes at the two ends as references, polishing the end part of the crankshaft by a polishing device (6), and placing the crankshaft on an assembly frame (1) after machining is finished;
step 2, machining a bracket, namely machining a mounting hole for mounting a crankshaft on the bracket, wherein the size of the mounting hole is in interference fit with the outer size of the end part of the crankshaft;
step 3, heating the support, placing the support into a heating device, starting the heating device to control the temperature to be 180-260 ℃, and preserving the temperature of the support;
and 4, assembling, namely placing the bracket on the assembly frame (1) after heating, arranging two pulleys (11) sliding along the axis direction of the end part of the crankshaft on the assembly frame (1), and installing the bracket on the end part of the crankshaft by pushing the pulleys (11) and keeping a propping state, wherein after the bracket is cooled, the connection and fixation between the crankshaft and the bracket are realized.
2. A heavy mining vehicle suspension assembly hot charging process according to claim 1, characterized in that the axial direction of the end of the crankshaft is defined as the first direction when the crankshaft is placed on the mounting frame (1), two V-shaped frames (12) for supporting the two ends of the crankshaft are arranged on the mounting frame (1) at intervals along the first direction, and the projections of the V-shaped frames (12) along the first direction are mutually superposed.
3. A heavy mining vehicle suspension assembly hot charging process according to claim 2, characterized in that the ends of the crankshaft overlap the interiors of two of said V-shaped frames (12) when defining the position of the central hole in the end portion of the crankshaft.
4. A heavy mining vehicle suspension assembly hot charging process according to claim 2, characterized in that, during assembly of the crankshaft and the bracket, the bracket at one end of the crankshaft is mounted to the crankshaft, and the pulley (11) at the end is pressed against the V-shaped bracket (12) by the pressing assembly (2), and then the bracket at the other end is mounted.
5. A heavy mining vehicle suspension assembly hot charging process according to claim 4, characterized in that a driving assembly (3) for driving the trolley (11) to slide on the mounting frame (1) is further provided between the mounting frame (1) and the trolley (11), the driving assembly (3) comprising:
one end of the first supporting rod (31) is hinged to one of the pulleys (11);
one end of the second supporting rod (32) is hinged with the other end of the first supporting rod (31), the other end of the second supporting rod is hinged on the other pulley (11), and the hinge shafts of the first supporting rod (31) and the second supporting rod (32) are arranged on the assembly frame (1) in a sliding manner along the vertical direction;
the driving part (33), the fixed part of driving part (33) articulates and sets up on assembly jig (1), the drive end of driving part (33) articulates and sets up on the articulated shaft between first branch (31) and second branch (32).
6. A heavy mining vehicle suspension assembly hot charging process according to claim 2, characterized in that in step 4, the mounting hole in the bracket is positioned coaxially with the end of the crankshaft by adjusting the position of the bracket by means of an adjusting assembly (4) when the bracket is placed on the trolley (11), said adjusting assembly (4) comprising:
the conical block (41) is mounted on the assembly frame (1), the conical block (41) has a degree of freedom of adjustment along the vertical direction on the assembly frame (1), and the axis of the conical block (41) is positioned on the symmetrical central plane of the two positioning inclined planes of the V-shaped frame (12);
the number of the positioning rods (42) is multiple, the positioning rods (42) are arranged in parallel at intervals, and the axes of the positioning rods (42) are all arranged along the sliding direction of the pulley (11);
and the pushing assembly (43) is arranged on the assembly frame (1) and is used for pushing the bracket to move towards the direction approaching the positioning rod (42).
7. A heavy mining vehicle suspension assembly hot charging process according to claim 6, characterized in that the end of the conical block (41) is also fixedly provided with a beam emitter (411), the beam emitted by the beam emitter (411) being arranged coaxially with the conical block (41).
8. The heavy mining vehicle suspension assembly hot charging process according to claim 1, further comprising machining of a central hole after defining the position of the central hole at the end of the crankshaft, the central hole being machined by a turning tool (5), the turning tool (5) comprising:
a base (51) fixedly mounted on a working surface of the drilling machine;
a rotating shaft (52) rotatably arranged on the base (51), wherein the axis of the rotating shaft (52) is arranged along the horizontal direction;
the middle part of the fixed arm (53) is fixedly connected with one end of the rotating shaft (52); the fixed arm (53) and the rotating shaft (52) are mutually perpendicular;
a fixing component (531) arranged on the fixing arm (53) and used for fixing the bent axle on the fixing arm (53);
the fixed seat (54) is fixedly arranged on a workbench of the drilling machine;
the limiting rod (55) is hinged to the fixing seat (54), a locating groove which is in sliding fit with the limiting rod (55) is formed in the fixing arm (53), and when the fixing arm (53) rotates to a vertical state, the limiting rod (55) can slide into the locating groove.
9. A heavy-duty car suspension assembly hot charging process as claimed in claim 1, wherein said polishing device (6) comprises:
an operation table (61);
a guide lever (62) rotatably provided on the operation table (61);
the sliding frame (63) is arranged on the guide rod (62) in a sliding manner along the length direction of the guide rod (62), a driving wheel (631) and a driven wheel (632) are rotatably arranged on the sliding frame (63), and the axes of the driving wheel (631) and the driven wheel (632) are mutually parallel and are arranged along the length direction of the guide rod (62);
the rotating piece (634) is arranged on the sliding frame (63), and a driving shaft of the rotating piece (634) is in transmission connection with the driving wheel (631) and is used for driving the driving wheel (631) to rotate on the sliding frame (63);
a polishing belt (633) connected between the driving wheel (631) and the driven wheel (632), and the driving wheel (631) and the driven wheel (632) are moved synchronously by the polishing belt (633);
the main shaft seat (64) is fixedly arranged on the operating table (61), a driving shaft is rotatably arranged on the main shaft seat (64), and the axis of the driving shaft is arranged along the length direction of the guide rod (62);
a tailstock (65) fixed on the operating table (61) at intervals along the axial direction of the driving shaft with the main shaft seat (64), wherein a center coaxially arranged with the driving shaft is arranged on the tailstock (65);
the driving end of the power piece (66) is in transmission connection with the driving shaft and is used for driving the driving shaft to rotate on the spindle seat (64).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310395518.9A CN116117454B (en) | 2023-04-14 | 2023-04-14 | Hot charging process for heavy mine car suspension assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310395518.9A CN116117454B (en) | 2023-04-14 | 2023-04-14 | Hot charging process for heavy mine car suspension assembly |
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| CN116117454B CN116117454B (en) | 2023-07-04 |
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| CN204524936U (en) * | 2015-02-10 | 2015-08-05 | 聊城万合工业制造有限公司 | The energy-conservation frock of a kind of enlarging on bench drill |
| CN110125659A (en) * | 2019-06-14 | 2019-08-16 | 安徽安凯金达机械制造有限公司 | A kind of balance shaft support rivet hot special plane and processing method |
| CN210060485U (en) * | 2019-06-03 | 2020-02-14 | 成都迈动汽车零配件有限公司 | Special drilling jig of 45L balance shaft |
| CN111203785A (en) * | 2020-03-11 | 2020-05-29 | 辽宁五一八内燃机配件有限公司 | Marine crankshaft polishing machine |
| CN215241321U (en) * | 2021-05-24 | 2021-12-21 | 深圳欣强智创电路板有限公司 | Automatic punching device for processing printed circuit board |
| CN218310966U (en) * | 2022-08-22 | 2023-01-17 | 丹江口市东发曲轴有限公司 | Clamp for processing crankshaft center hole |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001090606A (en) * | 1999-07-22 | 2001-04-03 | Honda Motor Co Ltd | Crankshaft holder |
| CN104227384A (en) * | 2013-06-20 | 2014-12-24 | 安徽海川重工科技有限公司 | Balance shaft assembly interference shrinkage fitting equipment |
| CN203636393U (en) * | 2013-11-16 | 2014-06-11 | 重庆金桥机器制造有限责任公司 | Tooling for machining auxiliary hole of balance shaft of engine |
| CN104325291A (en) * | 2014-10-16 | 2015-02-04 | 安徽安簧机械股份有限公司 | Machining device and machining technology for holes of driving axle housing of industrial vehicle |
| CN204524936U (en) * | 2015-02-10 | 2015-08-05 | 聊城万合工业制造有限公司 | The energy-conservation frock of a kind of enlarging on bench drill |
| CN210060485U (en) * | 2019-06-03 | 2020-02-14 | 成都迈动汽车零配件有限公司 | Special drilling jig of 45L balance shaft |
| CN110125659A (en) * | 2019-06-14 | 2019-08-16 | 安徽安凯金达机械制造有限公司 | A kind of balance shaft support rivet hot special plane and processing method |
| CN111203785A (en) * | 2020-03-11 | 2020-05-29 | 辽宁五一八内燃机配件有限公司 | Marine crankshaft polishing machine |
| CN215241321U (en) * | 2021-05-24 | 2021-12-21 | 深圳欣强智创电路板有限公司 | Automatic punching device for processing printed circuit board |
| CN218310966U (en) * | 2022-08-22 | 2023-01-17 | 丹江口市东发曲轴有限公司 | Clamp for processing crankshaft center hole |
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| Publication number | Publication date |
|---|---|
| CN116117454B (en) | 2023-07-04 |
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