Linear motor stator fixing and longitudinal adjusting structure and mounting method

Abstract

The invention belongs to the technical field of linear motor stator installation, and particularly relates to a linear motor stator fixing and longitudinal adjusting structure and an installation method. According to the technical scheme, the linear motor stator longitudinal adjusting structure comprises a C-shaped clamp, the C-shaped clamp is detachably connected to a U-shaped support, a jacking bolt is connected to the C-shaped clamp in a threaded mode, and one end of the jacking bolt abuts against the end face of a long stator module; when the longitudinal position of the long stator module is adjusted, the jacking bolt is slowly rotated by a wrench. A linear motor stator fixing structure comprises a main key, the main key is arranged between a U-shaped support and a long stator module, the main key and the long stator module are welded, and the U-shaped support and the main key are connected through a fixing bolt. The invention provides a linear motor stator fixing and longitudinal adjusting structure and a mounting method.

Description

Technical Field

[0001] The invention belongs to the technical field of linear motor stator installation, and in particular relates to a linear motor stator fixing and longitudinal adjustment structure and an installation method. Background Art

[0002] At present, bilateral permanent magnet synchronous linear motors are all installed with U-shaped brackets. The long stator of the linear motor in the bracket adopts a modular design, and multiple sets of combination keys are set on the back of each module to achieve the fixation and longitudinal adjustment of the long stator. The combination key consists of 1 main key and 2 oblique keys. The combination key is made of forged steel as a whole, and is processed and formed after annealing. When the user installs on-site, the longitudinal adjustment of the long stator module is achieved by tightening the oblique keys on both sides of the main key. After the oblique keys are tightened, the excess keys need to be cut off, and the oblique keys and the main keys need to be welded and fixed to prevent loosening, or a baffle is set at the end face of the oblique key to prevent loosening. Finally, the long stator module is fixed to the bracket with bolts.

[0003] The current structural processing and manufacturing costs are too high, the cycle is long, the on-site keying process is cumbersome, and the installation cycle is long. Various unfavorable factors indicate that the current structure is not an economical and efficient structure. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the object of the present invention is to provide a linear motor stator fixing and longitudinal adjustment structure and an installation method.

[0005] The technical solution adopted by the present invention is:

[0006] A linear motor stator longitudinal adjustment structure comprises a C-type clamp which is detachably connected to a U-shaped bracket, a jacking bolt being threadedly connected to the C-type clamp, and one end of the jacking bolt tightens the end face of a long stator module; when adjusting the longitudinal position of the long stator module, the jacking bolt is slowly rotated with a wrench.

[0007] During installation, wait for the C-clip to be embedded in the U-shaped bracket, connect the C-clip and the U-shaped bracket in series with the locking bolt, and finally tighten it with the locking nut. After the C-clip is tightened, slowly screw the jacking bolt into the adjustment part until the bolt head is close to the end face of the long stator module of the linear motor, lay a pad between the jacking bolt and the end face of the long stator module, tighten the jacking bolt to support the pad, and slowly turn the jacking bolt with a wrench to push the long stator module to make a longitudinal fine adjustment. After the long stator module is adjusted into place, remove the locking bolt and locking nut, and repeat the above work after the next long stator module is hoisted into place.

[0008] The present invention designs a set of linear motor stator longitudinal adjustment structure. After the long stator module is hoisted in place, each long stator module can be longitudinally adjusted through a set of common adjustment tooling, and the adjustment workload is directly reduced by 80%.

[0009] As a preferred solution of the present invention, the C-shaped clamp is connected to the U-shaped bracket through a locking bolt and is locked with a locking nut.

[0010] As a preferred solution of the present invention, a pad is provided between the jacking bolt and the long stator module.

[0011] As a preferred solution of the present invention, the C-type clamp is subjected to blackening and rust-proofing treatment.

[0012] A linear motor stator fixing structure comprises a main key, which is arranged between a U-shaped bracket and a long stator module, the main key and the long stator module are welded, and the U-shaped bracket and the main key are connected by fixing bolts.

[0013] The present invention only arranges the main key on the back of the long stator module of the linear motor, and the main key is formed by processing with a low alloy steel plate, so the processing and manufacturing cycle is short, the cost is low, and it is suitable for mass production.

[0014] The fixing structure of the present invention only includes a main key and a fixing bolt, and no oblique key is required. The entire long stator module can be removed by directly loosening the fixing bolt, which is convenient for maintenance.

[0015] As a preferred solution of the present invention, a dove tail is provided on one side of the main key, a dove tail groove is provided on the long stator module, and the dove tail is inserted into the dove tail groove; a T-shaped head is provided on the other side of the main key, a bracket groove is provided on the U-shaped bracket, and the T-shaped head is inserted into the bracket groove.

[0016] As a preferred solution of the present invention, the four corners of the T-head are processed to form guiding conical surfaces for guiding.

[0017] As a preferred solution of the present invention, the upper and lower surfaces of the main key are both provided with screw holes, which are used as main key hoisting process holes and as grounding cable installation holes after the long stator module is installed.

[0018] As a preferred solution of the present invention, a stop washer is provided between the nut of the fixing bolt and the U-shaped bracket.

[0019] A method for installing a linear motor stator comprises the following steps:

[0020] S1: Hang the long stator module with the main key welded into the U-shaped bracket, and insert the T-shaped head into the bracket groove;

[0021] S2: After the long stator module is hoisted into the U-shaped bracket, the C-shaped clamp is installed on the U-shaped bracket, and the C-shaped clamp and the U-shaped bracket are connected by locking bolts;

[0022] S3: Screw the jacking bolt into the C-clamp and adjust it until the jacking bolt is close to the end face of the long stator module;

[0023] S4: After laying the pad on the end face of the long stator module, rotate the jacking bolt to support the pad; use a wrench to slowly turn the jacking bolt to push the long stator module to move longitudinally;

[0024] S5: After the long stator module is moved into place, tighten the fixing bolts between the U-shaped bracket, the main key and the long stator module;

[0025] S6: Remove the locking bolts of the C-clamp, and repeat steps S1 to S5 after the next long stator module is hoisted into place.

[0026] The beneficial effects of the present invention are:

[0027] 1. The present invention designs a set of linear motor stator longitudinal adjustment structure. After the long stator module is hoisted in place, each long stator module can be longitudinally adjusted through a set of common adjustment tooling, and the adjustment workload is directly reduced by 80%.

[0028] 2. When the longitudinal adjustment structure of the present invention is provided, the fixing structure of the present invention may only include a main key and a fixing bolt, without the need to provide an oblique key. The entire long stator module can be removed by directly loosening the fixing bolt, which facilitates maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is an assembly diagram of the fixing structure of the present invention;

[0030] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0031] Figure 3 It is a structural diagram of the primary key;

[0032] Figure 4 It is a schematic diagram of the structure of the stop washer;

[0033] Figure 5 It is an assembly diagram of the longitudinal adjustment structure of the present invention;

[0034] Figure 6 yes Figure 5 A partial enlarged view of point B in the middle;

[0035] Figure 7 It is a schematic diagram of the structure of a C-clamp.

[0036] In the figure: 1-C-type clamp; 2-U-type bracket; 3-lifting bolt; 4-long stator module; 5-locking bolt; 6-locking nut; 7-shim; 8-main key; 9-fixing bolt; 91-stop washer; 81-dove tail; 82-T-type head; 83-guide cone; 84-screw hole; 85-fixing bolt hole. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0039] like Figure 5 to Figure 7 As shown, a linear motor stator longitudinal adjustment structure of the present embodiment includes a C-type clamp 1, which is detachably connected to a U-shaped bracket 2. A lifting bolt 3 is threadedly connected to the C-type clamp 1, and one end of the lifting bolt 3 tightens the end face of the long stator module 4; when adjusting the longitudinal position of the long stator module 4, the lifting bolt 3 is slowly rotated with a wrench.

[0040] This scheme proposes a linear motor stator fixing and longitudinal adjustment structure, the adjustment structure is composed of a C-type clamp 1, a locking bolt 5, a locking nut 6, a lifting bolt 3, and a pad 7. The specific structure is as follows Figure 4 After the long stator module 4 is hoisted and dropped into the U-shaped bracket 2, the C-shaped clamp 1 is fixed to the bracket with the fixing screw and the locking nut 6, the jacking bolt 3 is screwed into the C-shaped clamp 1, and the jacking bolt 3 is slowly rotated with a wrench to achieve the longitudinal adjustment of the linear motor stator module.

[0041] Among them, the C-type clamp 1 is a steel plate welded part. The C-type clamp 1 consists of a fixed part and an adjustment part. The fixed part is welded from steel plates and is C-shaped after welding. The spacing between the two vertical plates of the C-type clamp 1 is about 1mm thicker than the bracket plate of the U-shaped bracket 2 to facilitate installation, and two groups of mounting holes are set on the vertical plates, and the distribution of the mounting holes corresponds to the mounting holes on the bracket plate. The adjustment part is embedded in the C-type clamp 1 with a steel plate and welded to the upper and lower horizontal plates. Considering the impact of the installation cycle, the C-type clamp 1 is treated with black anti-rust treatment, and finally a through bolt hole is processed in the middle of the adjustment part.

[0042] The locking bolt 5, locking nut 6, and lifting bolt 3 are made of national standard steel parts, and the surface is blackened. During installation, wait for the C-type clamp 1 to be embedded in the U-shaped bracket 2, use the locking bolt 5 to connect the C-type clamp 1 and the U-shaped bracket 2 in series, and finally tighten it with the locking nut 6. After the C-type clamp 1 is tightened, slowly screw the lifting bolt 3 into the adjustment part until the bolt head is close to the end face of the long stator module 4 of the linear motor, lay a pad 7 between the lifting bolt 3 and the end face of the long stator module 4, tighten the lifting bolt 3 to support the pad 7, and then slowly rotate the lifting bolt 3 with a wrench to push the long stator module 4 to make a longitudinal fine adjustment. After the long stator module 4 is adjusted in place, remove the locking bolt 5 and the locking nut 6, and repeat the above work after the next long stator module 4 is hoisted in place.

[0043] The present invention designs a set of linear motor stator longitudinal adjustment structure. After the long stator module is hoisted in place, each long stator module 4 can be longitudinally adjusted through a set of common adjustment tooling, and the adjustment workload is directly reduced by 80%.

[0044] like Figure 1 to Figure 4 As shown, the linear motor stator fixing structure of this embodiment includes a main key 8, a double-hole stop washer 91, a lubricant, and a fixing bolt 9. The main key 8 is arranged between the U-shaped bracket 2 and the long stator module 4, the main key 8 and the long stator module 4 are welded, and the U-shaped bracket 2 and the main key 8 are connected by fixing bolts 9.

[0045] After the long stator module 4 of the linear motor is pressurized, insert the dove tail 81 of the main key into the dove tail slot of the long stator module 4, and weld both sides of the main key 8 to the back of the long stator module 4. Use carbon steel welding wire ER70S-R as solder to ensure that the force on the weld foot meets the use requirements. Multiple sets of main keys 8 are set for each module.

[0046] The main key 8 is integrally formed from low alloy steel. A fully-through dovetail 81 is set on the back side of the main key 8 that fits the long stator module 4. The thickness of the dovetail 81 of the main key 8 is slightly smaller than the depth of the dovetail groove of the punching sheet of the long stator module 4. A small gap is reserved between the bevel of the dovetail 81 of the main key 8 and the bevel of the dovetail groove of the punching sheet. The dovetail 81 can be used for rough positioning when the long stator module 4 is stacked. A fully-through T-shaped head 82 is set on the main key 8 near the side of the U-shaped bracket 2. A gap is reserved between the outer surface of the T-shaped head 82 and the bracket groove, and an adjustment gap is reserved between the two sides of the T-shaped head 82 and the bracket groove. The two sides of the T-shaped head 82 are processed into guide cones 83, which assume the guiding function when the long stator is installed. Screw holes 84 are set on the upper and lower surfaces of the main key 8. The screw holes 84 can be used as the main key 8 hoisting process holes, and they also serve as grounding cable installation holes after the long stator module 4 is installed. Four groups of fixing bolt holes 85 are processed on the large surface of the main key 8 close to the U-shaped bracket 2 to serve as the fixing holes for the long stator module 4 and the U-shaped bracket 2 to engage with each other.

[0047] The double-hole stop washers 91 are used for locking, and two sets of stop washers 91 are set for each main key 8. After tightening the fixing bolts 9 during on-site installation, the stop washers 91 are flanged and locked to prevent the fixing bolts 9 from loosening due to vibration and other reasons during later operation. In addition, considering the anti-corrosion requirements, the stop washers 91 are blackened during manufacturing.

[0048] The lubricant has a lubricating effect. Before installing the fixing bolt 9, the bolt head (the bottom and the contact surface of the locking washer 91) and all thread surfaces are evenly sprayed with boron nitride lubricant to reduce the friction between the bolt head and the thread pair when the fixing bolt 9 is tightened, ensuring that the bolt preload meets the design requirements.

[0049] The fixing bolts 9 play a fixing role. Each main key 8 is provided with 4 fixing bolts 9 to bear the normal force when the motor is running. Each fixing bolt 9 is pre-tightened according to a given pre-tightening force to ensure that the friction between the back of the main key 8 and the back plate of the U-shaped bracket 2 under the out-of-step condition is greater than the longitudinal force borne by the long stator module 4. In order to ensure that the fixing bolts 9 meet the requirements when the linear motor is working, high-strength bolts are selected in this structure, and the bolts are blackened considering the corrosion resistance requirements for long-term operation.

[0050] The present invention only sets the main key 8 on the back of the long stator module 4 of the linear motor, and the main key 8 is formed by processing a low alloy steel plate, which has a short processing and manufacturing cycle, low cost, and is suitable for mass production.

[0051] The fixing structure of the present invention only includes the main key 8 and the fixing bolt 9, and no oblique key is required. The entire long stator module 4 can be removed by directly loosening the fixing bolt 9, which is convenient for maintenance.

[0052] The linear motor stator installation method of this embodiment includes the following steps:

[0053] S1: hoist the welded long stator module 4 into the U-shaped bracket 2, and insert the T-shaped head 82 into the bracket groove;

[0054] S2: After the long stator module 4 is hoisted into the U-shaped bracket 2, the C-shaped clamp 1 is installed on the U-shaped bracket 2, and the C-shaped clamp 1 and the U-shaped bracket 2 are connected by the locking bolts 5;

[0055] S3: Screw the jacking bolt 3 into the C-clamp 1 and adjust it until the jacking bolt 3 is close to the end surface of the long stator module 4;

[0056] S4: After laying the backing plate 7 on the end surface of the long stator module 4, rotate the jacking bolt 3 to support the backing plate 7; slowly rotate the jacking bolt 3 with a wrench to push the long stator module 4 to move longitudinally;

[0057] S5: After the long stator module 4 is moved into position, tighten the fixing bolts 9 between the U-shaped bracket 2, the main key 8 and the long stator module 4;

[0058] S6: Remove the locking bolt 5 of the C-type clamp 1, and repeat steps S1 to S5 after the next long stator module 4 is hoisted into place.

[0059] The main key 8 of the present invention has a simple structure, a short processing and manufacturing cycle, and a low cost. In the original structure, a combination key is set between the U-shaped bracket 2 and the long stator module 4, and a set of combination keys consists of a main key 8 and two oblique keys. The combination key is made of forged steel, which is integrally forged, annealed, and machine-tested before being processed and formed. The overall cost is high and the manufacturing cycle is long. In the present invention, the main key 8 is only set on the back of the long stator module 4 of the linear motor, and the main key 8 is processed and formed using a low-alloy steel plate. The processing and manufacturing cycle is short, the cost is low, and it is suitable for mass production.

[0060] The installation cycle of the present invention is short and the installation process is few. After the long stator module 4 in the original structure is hoisted in place, it is necessary to achieve longitudinal adjustment of the long stator module 4 by tightening the oblique keys. Each long stator module 4 is provided with multiple sets of combination keys, and there are more than 6,000 sets of combination keys in the whole line. The workload of tightening the oblique keys is large, which greatly increases the installation cycle. After each oblique key is tightened, the excess part needs to be cut off and the oblique key is welded and fixed to the main key 8. Insulation protection is involved during welding, and there are too many derived processes. According to the structure of the present invention, after the long stator module 4 is hoisted in place, each long stator module 4 can achieve longitudinal adjustment through one set of common adjustment tooling, and the adjustment workload is directly reduced by 80%.

[0061] The present invention is easy to maintain and has high detachability. A maglev line involves thousands of linear motor stator modules, and there will always be maintenance needs during operation. In the original structure, when a long stator module 4 fails and needs to be replaced, it is necessary to first grind and remove the weld of the welding part, and tap the loose key in the opposite direction from the tightening of the inclined key, which is difficult to operate in a limited space. With the structure described in the present invention, the long stator module 4 can be completely dismantled by simply loosening the fixing bolts 9, which is convenient for maintenance.

[0062] The present invention is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the protection scope of the present invention.

Claims

1. A linear motor stator longitudinal adjustment structure, characterized in that: The invention comprises a C-shaped clamp (1) which is detachably connected to a U-shaped bracket (2); a jacking bolt (3) is threadedly connected to the C-shaped clamp (1); one end of the jacking bolt (3) presses the end surface of the long stator module (4) tightly; when adjusting the longitudinal position of the long stator module (4), the jacking bolt (3) is slowly rotated with a wrench.

2. A linear motor stator longitudinal adjustment structure according to claim 1, characterized in that: The C-shaped clamp (1) is connected to the U-shaped bracket (2) via a locking bolt (5) and is locked with a locking nut (6).

3. The linear motor stator longitudinal adjustment structure according to claim 1, characterized in that: A backing plate (7) is provided between the jacking bolt (3) and the long stator module (4).

4. The linear motor stator longitudinal adjustment structure according to claim 1, characterized in that: The C-shaped clip (1) is subjected to blackening and rust-proofing treatment.

5. A linear motor stator fixing structure, used for fixing a long stator module (4) adjusted by the linear motor stator longitudinal adjustment structure according to claim 3, characterized in that: It comprises a main key (8), which is arranged between a U-shaped bracket (2) and a long stator module (4), the main key (8) and the long stator module (4) are welded, and the U-shaped bracket (2) and the main key (8) are connected via fixing bolts (9).

6. A linear motor stator fixing structure according to claim 5, characterized in that: A dove tail (81) is provided on one side of the main key (8), a dove tail groove is provided on the long stator module (4), and the dove tail (81) is inserted into the dove tail groove; a T-shaped head (82) is provided on the other side of the main key (8), a bracket groove is provided on the U-shaped bracket (2), and the T-shaped head (82) is inserted into the bracket groove.

7. A linear motor stator fixing structure according to claim 6, characterized in that: The four corners of the T-shaped head (82) are machined with guide cone surfaces (83) for guiding.

8. A linear motor stator fixing structure according to claim 5, characterized in that: The upper and lower surfaces of the main key (8) are both provided with screw holes (84), which are used as process holes for hoisting the main key (8) and as grounding cable installation holes after the long stator module (4) is installed.

9. A linear motor stator fixing structure according to claim 5, characterized in that: A stop washer (91) is provided between the nut of the fixing bolt (9) and the U-shaped bracket (2).

10. A method for installing a linear motor stator, using the linear motor stator fixing structure according to claim 6, characterized in that: The following steps are involved: S1: Hang the long stator module (4) welded with the main key (8) into the U-shaped bracket (2), and insert the T-shaped head (82) into the bracket groove; S2: After the long stator module (4) is hoisted into position on the U-shaped bracket (2), the C-shaped clamp (1) is mounted on the U-shaped bracket (2), and the C-shaped clamp (1) and the U-shaped bracket (2) are connected by locking bolts (5); S3: Screw the jacking bolt (3) into the C-type clamp (1), and adjust until the jacking bolt (3) is close to the end surface of the long stator module (4); S4: After laying a backing plate (7) on the end surface of the long stator module (4), the jacking bolt (3) is rotated to support the backing plate (7); the jacking bolt (3) is slowly rotated with a wrench to push the long stator module (4) to move longitudinally; S5: After the long stator module (4) is moved into position, tighten the fixing bolts (9) between the U-shaped bracket (2), the main key (8) and the long stator module (4); S6: Remove the locking bolt (5) of the C-type clamp (1), and repeat steps S1 to S5 after the next long stator module (4) is hoisted into place.

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