CN110022047B

CN110022047B - Guide rail of linear motor and installation method thereof

Info

Publication number: CN110022047B
Application number: CN201910197020.5A
Authority: CN
Inventors: 程旎; 王正; 白福余; 席志成
Original assignee: Wuhan Marine Machinery Plant Co Ltd
Current assignee: Wuhan Marine Machinery Plant Co Ltd
Priority date: 2019-03-15
Filing date: 2019-03-15
Publication date: 2020-10-27
Anticipated expiration: 2039-03-15
Also published as: CN110022047A

Abstract

The invention discloses a guide rail of a linear motor and an installation method thereof, belonging to the technical field of rail transit. The guide rail comprises a plurality of guide units which are arranged at intervals along the extension direction of a straight line, and each guide unit comprises a first base, a first height adjusting mechanism, a first connecting seat, a second base, a second height adjusting mechanism, a second connecting seat and a guide strip; the first base and the second base are respectively fixedly arranged on the installation surface of the guide rail, and the extending direction of the guide strip is parallel to the installation surface of the guide rail; a guide groove is arranged between the first end and the second end of the guide strip and is communicated in the linear extending direction; the first connecting seat is fixedly connected with the first end of the guide strip, and the second connecting seat is fixedly connected with the second end of the guide strip; the first height adjusting mechanism and the second height adjusting mechanism respectively comprise a first upper connecting rod, a first lower connecting rod, a second upper connecting rod, a second lower connecting rod, a screw, a first threaded connecting piece and a second threaded connecting piece. The invention can improve the working stability of the linear motor.

Description

Guide rail of linear motor and installation method thereof

Technical Field

The invention relates to the technical field of rail transit, in particular to a guide rail of a linear motor and an installation method thereof.

Background

The linear motor is a transmission device which directly converts electric energy into linear motion mechanical energy and does not need any intermediate conversion mechanism. The linear motor can be regarded as a rotary motor which is formed by cutting open in the radial direction and expanding into a plane.

The rotating motor mainly comprises a rotor and a stator sleeved outside the rotor. The stator is a stationary part of the rotating electrical machine and mainly functions to generate a rotating magnetic field. The rotor is a rotating body supported by a bearing and mainly used for being cut by magnetic lines of force in a rotating magnetic field to generate current.

When the rotating electric machine is cut open in the radial direction and developed into a plane, the stator is developed into a primary, the rotor is developed into a secondary disposed opposite to the stator, and an air gap exists between the stator and the rotor. An alternating current power supply is introduced into the primary, a traveling wave magnetic field is generated in the air gap, an induced current is generated by the secondary under the cutting of the traveling wave magnetic field, and the induced current and the traveling wave magnetic field interact to generate an electromagnetic thrust, so that the primary and the secondary move relatively.

In order to confine the secondary to linear motion in the travelling magnetic field along the extension direction of the primary, the primary is usually fixedly mounted on a base, and a linear guide rail having an extension direction identical to that of the primary is laid above the primary, and the secondary is arranged in the linear guide rail to move so as to be kept in the travelling magnetic field.

In the process of implementing the invention, the inventor finds that the prior art has at least the following problems:

the linear guide rail is generally composed of a plurality of strip-shaped baffles, the extension direction of which is consistent with the extension direction of the primary. When the length of the primary part in the extending direction is large, uneven areas exist on the installation surface of the linear motor, the linear guide rail paved between the uneven areas can be bent, and the secondary part is easy to deviate from the original linear track when moving to the bent part, so that the stable work of the linear motor is influenced.

Disclosure of Invention

The embodiment of the invention provides a guide rail of a linear motor and an installation method thereof, which can solve the problem that secondary stages deviate from an original linear track due to bending of the linear guide rail in uneven areas in the prior art. The technical scheme is as follows:

in a first aspect, an embodiment of the present invention provides a guide rail of a linear motor, where the guide rail includes a plurality of guide units arranged at intervals along an extension direction of a straight line, and each guide unit includes a first base, a first height adjustment mechanism, a first connection seat, a second base, a second height adjustment mechanism, a second connection seat, and a guide strip; the first base and the second base are respectively fixedly installed on the installation surface of the guide rail, and the extending direction of the guide strip is parallel to the installation surface of the guide rail; a guide groove is formed between the first end and the second end of the guide strip and is communicated in the extension direction of the straight line; the first connecting seat is fixedly connected with the first end of the guide strip, and the second connecting seat is fixedly connected with the second end of the guide strip;

the first height adjusting mechanism comprises a first upper connecting rod, a first lower connecting rod, a second upper connecting rod, a second lower connecting rod, a screw, a first threaded connecting piece and a second threaded connecting piece; the extending direction of the screw is parallel to the mounting surface of the guide rail; the screw thread turning directions of the first end and the second end of the screw rod are opposite, the first threaded connecting piece is in threaded connection with the first end of the screw rod, and the second threaded connecting piece is in threaded connection with the second end of the screw rod; the first end of the first upper connecting rod and the first end of the first lower connecting rod are respectively hinged with the first threaded connecting piece, and the first end of the second upper connecting rod and the first end of the second lower connecting rod are respectively hinged with the second threaded connecting piece; the second end of the first upper connecting rod and the second end of the second upper connecting rod are respectively hinged with the first connecting seat, and the second end of the first lower connecting rod and the second end of the second lower connecting rod are respectively hinged with the first base; the second base, the second height adjusting mechanism and the second connecting seat are structurally identical to the first base, the first height adjusting mechanism and the first connecting seat, and the connection relation between the second base, the second height adjusting mechanism and the second connecting seat is identical to the connection relation between the first base, the first height adjusting mechanism and the first connecting seat.

Optionally, the first threaded connecting piece comprises a pin, the first end and the second end of the pin are both provided with anti-loosening elements, a screw hole is arranged between the first end and the second end of the pin, and the extending direction of the screw hole is perpendicular to the extending direction of the pin; the pin is sleeved outside the first end of the screw rod through the screw hole, and the first end of the first upper connecting rod and the first end of the first lower connecting rod are both provided with through holes sleeved between the first end and the second end of the pin;

the structure of the second threaded connecting piece and the connection relation among the screw rod, the second upper connecting rod and the second lower connecting rod are the same as the structure of the first threaded connecting piece and the connection relation among the screw rod, the first upper connecting rod and the first lower connecting rod.

Furthermore, a first end of the pin is provided with a locking projection, a second end of the pin is provided with a through hole into which the locking split pin is inserted, and the extending direction of the through hole at the second end of the pin is parallel to the extending direction of the screw hole.

Furthermore, the first threaded connecting piece further comprises a joint, a first through hole and a second through hole are formed in the joint, the extending direction of the first through hole is perpendicular to the extending direction of the second through hole, and the first through hole is communicated with the second through hole; the joint is sleeved outside the screw rod through the first through hole, and the joint is sleeved outside the pin through the second through hole.

Optionally, the first upper connecting rod comprises a first connecting bar, a second connecting bar and at least one connecting piece; the first connecting strip and the second connecting strip are oppositely arranged, and the at least one connecting piece is arranged between the first connecting strip and the second connecting strip and is fixedly connected with the first connecting strip and the second connecting strip respectively; a third through hole hinged with the first threaded connecting piece is formed in the first end of the first connecting strip, and the extending direction of the third through hole is perpendicular to the surface, opposite to the first connecting strip and the second connecting strip, of the first connecting strip; a second end of the first connecting strip is provided with a fourth through hole hinged with the first connecting seat, and the extending direction of the fourth through hole is vertical to the surface of the second connecting strip opposite to the first connecting strip; the structure of the second connecting strip and the connection relation between the second connecting strip and the first threaded connecting piece as well as the first connecting seat are the same as the structure of the first connecting strip and the connection relation between the second connecting strip and the first threaded connecting piece as well as the first connecting seat;

the structure of the first lower connecting rod and with first threaded connection spare the relation of connection between the first base, the structure of connecting rod and with second threaded connection spare on the second the relation of connection between the first connection seat, the structure of connecting rod and with second threaded connection spare under the second the relation of connection between the first base all with the structure of connecting rod and with first threaded connection spare on the first connection seat between the same.

Furthermore, the number of the connecting pieces is two, and the two connecting pieces are arranged between the third through hole and the fourth through hole at intervals along the extending direction of the first connecting strip.

Optionally, the first connecting seat includes a seat body, a sliding shaft and a sliding block; the seat body is a cavity structure with an opening at one end, the sliding shaft is fixed in the cavity structure, and the extending direction of the sliding shaft is parallel to the plane of the opening in the cavity structure; the sliding block is slidably arranged on the sliding shaft, and the first end of the guide strip is fixedly connected with the sliding block through the opening of the cavity structure; a fifth through hole hinged with the second end of the first upper connecting rod and a sixth through hole hinged with the second end of the second upper connecting rod are arranged on the part, opposite to the opening, of the cavity structure;

the structure of the second connecting seat and the connection relation between the guide strip and the second height adjusting mechanism are the same as the structure of the first connecting seat and the connection relation between the guide strip and the first height adjusting mechanism.

Furthermore, the first connecting seat further comprises a first adjusting screw and a second adjusting screw, a screw hole in threaded connection with the first adjusting screw is formed in a first surface of the cavity structure adjacent to the opening, a screw hole in threaded connection with the second adjusting screw is formed in a second surface of the cavity structure adjacent to the opening, and the second surface is opposite to the first surface; the first adjusting screw abuts against the surface, facing the first surface, of the sliding block, and the second adjusting screw abuts against the surface, facing the second surface, of the sliding block.

In a second aspect, an embodiment of the present invention provides a method for installing a guide rail of a linear motor as provided in the first aspect, where the method for installing the guide rail includes:

a plurality of guide units are arranged at intervals along the extension direction of a straight line, and each guide unit is arranged in the following way:

respectively and fixedly mounting a first base and a second base on the mounting surface of the guide rail;

a first height adjusting structure and a first connecting seat are arranged on the first base, and a second height adjusting structure and a second connecting seat are arranged on the second base;

fixedly connecting the guide strip with the first connecting seat and the second connecting seat respectively;

based on a height measuring instrument, rotating screws in the first height adjusting mechanism and the second height adjusting mechanism, changing the distance between a first threaded connecting piece and a second threaded connecting piece in the first height adjusting mechanism and the second height adjusting mechanism, driving a first upper connecting rod, a first lower connecting rod, a second upper connecting rod and a second lower connecting rod in the first height adjusting mechanism and the second height adjusting mechanism to move, and adjusting the height of a guide groove in the guide strip relative to the installation surface of the guide rail until the height of the guide groove in the plurality of guide units relative to the installation surface of the guide rail is consistent.

Optionally, when the first connecting seat and the second connecting seat each include a seat body, a sliding shaft, and a sliding block, the mounting method further includes:

based on a linear measuring instrument, the sliding block slides on the sliding shaft, and the position of the guide groove in the guide strip between the first connecting seat and the second connecting seat is adjusted until the guide grooves in the plurality of guide units are on the same straight line.

The technical scheme provided by the embodiment of the invention has the following beneficial effects:

through fall into a plurality of guide unit that set up along sharp extending direction interval with the guide rail, every guide unit all includes first base, first high adjustment mechanism, first connecting seat, the second base, the second high adjustment structure, second connecting seat and gib block, can adjust a plurality of guide unit respectively, and the height of two strong points of every guide unit, a plurality of gib blocks that make on the uneven installation face of height all are located same height, effectively avoid the guide rail to appear buckling, thereby be favorable to improving linear electric motor job stabilization nature.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a guide rail of a linear motor according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a guide unit provided in an embodiment of the present invention;

FIG. 3 is a schematic diagram of a pin configuration provided by an embodiment of the present invention;

FIG. 4 is a front view of a joint provided by an embodiment of the present invention;

FIG. 5 is a side view of a fitting provided by an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a screw according to an embodiment of the present invention;

FIG. 7 is a front view of a first upper connecting rod provided in accordance with an embodiment of the present invention;

FIG. 8 is a side view of a first upper connecting rod provided in accordance with an embodiment of the present invention;

FIG. 9 is a front view of a first docking station provided in accordance with an embodiment of the present invention;

fig. 10 is a side view of a connector holder according to an embodiment of the present invention;

fig. 11 is a schematic structural view of a slide shaft provided in an embodiment of the present invention;

FIG. 12 is a front view of a first base provided by an embodiment of the present invention;

FIG. 13 is a top view of a first base provided in accordance with an embodiment of the present invention;

FIG. 14 is a front view of a guide strip provided by an embodiment of the present invention;

fig. 15 is a top view of a guide strip provided by an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiment of the invention provides a guide rail of a linear motor. Fig. 1 is a schematic structural diagram of a guide rail of a linear motor according to an embodiment of the present invention. Referring to fig. 1, the guide rail includes a plurality of guide units 100 arranged at intervals in an extending direction of a straight line (a direction indicated by an arrow in fig. 1). Fig. 2 is a schematic structural diagram of a guide unit according to an embodiment of the present invention. Referring to fig. 2, each guide unit includes a first base 11, a first height adjusting mechanism 12, a first coupling seat 13, a second base 21, a second height adjusting mechanism 22, a second coupling seat 23, and a guide bar 30. The first base 11 and the second base 21 are respectively fixedly installed on the installation surface of the guide rail, and the extending direction of the guide strip 30 is parallel to the installation surface of the guide rail. A guide groove 33 is provided between the first end 31 and the second end 32 of the guide strip 30, the guide groove 33 being continuous in the linear direction of extension. The first connecting seat 13 is fixedly connected with the first end 31 of the guide bar 30, and the second connecting seat 23 is fixedly connected with the second end 32 of the guide bar 30.

The first height adjustment mechanism 12 includes a first upper connecting rod 121, a first lower connecting rod 122, a second upper connecting rod 123, a second lower connecting rod 124, a threaded rod 125, a first threaded connector 126, and a second threaded connector 127. The screw 125 extends in a direction parallel to the mounting surface of the guide rail. The first and second ends of the screw 125 are oppositely threaded, the first threaded connector 126 is threadedly coupled to the first end of the screw 125, and the second threaded connector 127 is threadedly coupled to the second end of the screw 125. The first end of the first upper connecting rod 121 and the first end of the first lower connecting rod 122 are respectively hinged with a first threaded connector 126, and the first end of the second upper connecting rod 123 and the first end of the second lower connecting rod 124 are respectively hinged with a second threaded connector 127; the second ends of the first upper connecting rod 121 and the second upper connecting rod 123 are respectively hinged with the first connecting seat 13, and the second ends of the first lower connecting rod 122 and the second lower connecting rod 124 are respectively hinged with the first base 11.

In the present embodiment, the structures of the second base 21, the second height adjusting mechanism 22 and the second connecting seat 23 and the connection relationship therebetween are the same as those of the first base 11, the first height adjusting mechanism 12 and the first connecting seat 13 and the connection relationship therebetween. That is, the structure of the second base 21 is the same as that of the first base 11, the structure of the second height adjusting mechanism 22 is the same as that of the first height adjusting mechanism 12, and the structure of the second connecting seat 23 is the same as that of the first connecting seat 13; the connection relationship between the second base 21 and the second height adjusting mechanism 22 is the same as the connection relationship between the first base 11 and the first height adjusting mechanism 12, and the connection relationship between the second height adjusting mechanism 22 and the second connecting seat 23 is the same as the connection relationship between the first height adjusting mechanism 12 and the first connecting seat 13.

In practical applications, when the screw 125 is rotated along the circumferential direction of the screw 125, since the first threaded connector 126 in threaded connection with the screw 125 is further hinged to the first upper connecting rod 121 and the first lower connecting rod 122, respectively, and the second threaded connector 127 in threaded connection with the screw 125 is further hinged to the second upper connecting rod 123 and the second lower connecting rod 124, respectively, the first threaded connector 126 and the second threaded connector 127 cannot rotate along with the screw 125, so that the rotary motion is converted into the linear motion. Since the screw thread directions of the first end and the second end of the screw 125 are opposite, the distance between the first screw thread connector 126 and the second screw thread connector 127 is increased or decreased along with the progress of the linear motion, and the inclination angles of the first upper connecting rod 121 and the first lower connecting rod 122 hinged to the first screw thread connector 126, respectively, and the second upper connecting rod 123 and the second lower connecting rod 124 hinged to the second screw thread connector 127, respectively, with respect to the screw 125 are changed, thereby changing the height difference between the first connecting seat 13 and the first base 11. Since the structure of the second height adjusting mechanism 22 is the same as that of the first height adjusting mechanism 21, the height difference between the second connecting seat 23 and the second seating 21 can be changed accordingly. On one hand, for each guide unit, the extending direction of the guide strip 30 can be ensured to be parallel to the mounting surface of the guide rail, and the problem that the mounting surface of a single guide unit is uneven is avoided by adjusting the height difference between the first connecting seat 13 and the first base 11 and the height difference between the second connecting seat 23 and the second base 21; on the other hand, for the whole guide rail, the guide strips 30 of all the guide units can be ensured to be positioned on the same horizontal plane, and the problem that the installation surfaces of a plurality of guide units are uneven is avoided.

According to the embodiment of the invention, the guide rail is divided into the plurality of guide units which are arranged at intervals along the extension direction of the straight line, each guide unit comprises the first base, the first height adjusting mechanism, the first connecting seat, the second base, the second height adjusting mechanism, the second connecting seat and the guide strip, the heights of the plurality of guide units and two supporting points of each guide unit can be respectively adjusted, so that the plurality of guide strips on the uneven mounting surface are all positioned at the same height, the guide rail is effectively prevented from being bent, and the working stability of the linear motor is favorably improved. In addition, for a single height adjusting mechanism, the connecting rods are hinged to the two sides of the screw respectively, so that the inclination angle of each connecting rod relative to the horizontal plane can be adjusted in a balanced mode, and the overall stability is good.

Alternatively, as shown in FIG. 2, the first threaded connector 126 may include a pin 126 a. Fig. 3 is a schematic structural diagram of a pin according to an embodiment of the present invention. Referring to fig. 3, the first end a and the second end B of the pin 126a are provided with anti-loosening elements, and a screw hole C is provided between the first end a and the second end B of the pin 126a, and the screw hole C extends in a direction perpendicular to the extending direction of the pin 126 a. The pin 126a is sleeved outside the first end of the screw 125 through the screw hole C, and the first end of the first upper connecting rod 121 and the first end of the first lower connecting rod 122 are both provided with through holes sleeved between the first end a and the second end B of the pin 126a (see the structure of the first connecting rod and the second connecting rod for details). Through set up the extending direction and the extending direction perpendicular screw of pin on the pin, can convert the rotary motion of screw thread into linear motion, also conveniently articulate with the connecting rod.

In this embodiment, the structure of the second threaded connector 127 and the connection relationship with the screw 125, the second upper connecting rod 123 and the second lower connecting rod 124 may be the same as the structure of the first threaded connector 126 and the connection relationship with the screw 125, the first upper connecting rod 121 and the first lower connecting rod 122. That is, the structure of the second threaded connector 127 may be the same as the structure of the first threaded connector 126; the connection relationship between the second threaded connection member 127 and the screw 125 may be the same as the connection relationship between the first threaded connection member 126 and the screw 125, the connection relationship between the second threaded connection member 127 and the second upper connection rod 123 may be the same as the connection relationship between the first threaded connection member 126 and the first upper connection rod 121, and the connection relationship between the second threaded connection member 127 and the second lower connection rod 124 may be the same as the connection relationship between the first threaded connection member 126 and the first lower connection rod 122.

Further, as shown in fig. 3, the first end a of the pin 126a may be provided with a locking protrusion, the second end B of the pin 126a may be provided with a through hole into which a locking split pin is inserted, and the through hole of the second end B of the pin 126a may extend in a direction parallel to the extending direction of the screw hole C. The lug and the cotter pin are matched, so that stable connection between the connecting rod and the cotter pin can be guaranteed, and disassembly is convenient.

Further, as shown in fig. 2, the first threaded connection 126 may also include a nipple 126 b. Fig. 4 is a front view of a joint provided in an embodiment of the present invention, and fig. 5 is a side view of the joint provided in an embodiment of the present invention. Referring to fig. 4 and 5, the joint 126b is provided with a first through hole D and a second through hole E, an extending direction of the first through hole D is perpendicular to an extending direction of the second through hole E, and the first through hole D is communicated with the second through hole E; the joint 126b is sleeved outside the screw 125 through the first through hole D, and the joint 126b is sleeved outside the pin 126a through the second through hole E. In the process that the pin converts the rotary motion of the screw into the linear motion, the pin is extruded to a certain extent, so that the pin is possibly deformed; the joint is sleeved outside the pin, and can support the pin, so that the pin is effectively prevented from being extruded and deformed.

In this embodiment, as shown in FIG. 2, the second threaded connection 127 may include only a pin and no joint. In practice, the first threaded connector 126 may also comprise a pin, and the second threaded connector 127 may comprise a pin and a joint; it is also possible that the first threaded connector 126 and the second threaded connector 127 each comprise a pin, or a pin and a joint.

Fig. 6 is a schematic structural diagram of a screw according to an embodiment of the present invention. Referring to fig. 6, the screw 125 may include a shaft 125a and a hexagonal head 125b, and the hexagonal head 125b is fixed to one end of the shaft 125a to facilitate rotation of the shaft 125 a. In this embodiment, as shown in fig. 2, in order to facilitate adjustment of the first height adjustment mechanism 12, a hexagonal head 125b is placed at an end remote from the second height adjustment mechanism 22 so as to operate the hexagonal head. Since the threaded connection member near the hexagonal head is compressed more than the threaded connection member far from the hexagonal head during the rotation of the rod body, and the joint can protect the pin, in the embodiment, the first threaded connection member 126 near the hexagonal head in the first height adjusting mechanism 12 includes a pin and a joint (as shown in fig. 2), and the joint in the first threaded connection member 126 is used to effectively relieve the screw 125 from compressing the pin in the first threaded connection member 126, and to effectively protect the pin in the first threaded connection member 126.

Fig. 7 is a front view of a first upper connecting rod according to an embodiment of the present invention. Referring to fig. 7, the first upper connecting rod 121 may alternatively include a first connecting bar 121a, a second connecting bar 121b, and at least one connecting piece 121 c. The first connecting bar 121a and the second connecting bar 121b are oppositely disposed, and at least one connecting piece 121c is disposed between the first connecting bar 121a and the second connecting bar 121b and fixedly connected to the first connecting bar 121a and the second connecting bar 121b, respectively.

Fig. 8 is a side view of a first upper connecting rod provided in accordance with an embodiment of the present invention. Referring to fig. 8 and 7, the first end F of the first connecting bar 121a is provided with a third through hole hinged to the first threaded connector 126, and the third through hole extends in a direction perpendicular to the surface of the first connecting bar 121a opposite to the second connecting bar 121 b; the second end G of the first connecting bar 121a is provided with a fourth through hole hinged to the first connecting seat 13, and the extending direction of the fourth through hole is perpendicular to the surface of the second connecting bar 121b opposite to the first connecting bar 121 a.

The structure of the second connecting bar 121b and the connection relationship between the first threaded connector 126 and the first connecting seat 13 are the same as the structure of the first connecting bar 121a and the connection relationship between the first threaded connector 126 and the first connecting seat 13. That is, the second connection bar 121b has the same structure as the first connection bar 121 a; the connection relationship between the second connection bar 121b and the first threaded connection member 126 is the same as the connection relationship between the first connection bar 121a and the first threaded connection member 126, and the connection relationship between the second connection bar 121b and the first connection base 13 is the same as the connection relationship between the first connection bar 121a and the first connection base 13.

The connecting strips arranged oppositely are connected through at least one connecting piece, so that the overall strength can be enhanced, the use of materials is reduced, and the implementation cost is reduced. And the connecting strips that two relative settings were set up are articulated respectively, can strengthen the stability that first upper junction pole and first threaded connection spare, first connecting seat are connected.

In practical applications, as shown in fig. 8, the aperture of the third through hole provided at the first end F of the first connecting bar 121a and the aperture of the fourth through hole provided at the second end G of the first connecting bar 121a may be larger than the width (length in a direction perpendicular to the direction from the first end F to the second end G of the first connecting bar 121a) of the portion between the first end F and the second end G of the first connecting bar 121 a. Accordingly, the aperture of the through hole provided at both ends of the second connection bar 121b is also larger than the width of the portion between both ends of the second connection bar 121 b. At the moment, the pin can be hinged by a larger pin, so that the stress strength of the pin is enhanced, and the stability of hinged connection is improved.

In this embodiment, the structure of the first lower connecting rod 122 and the connection relationship between the first threaded connector 126 and the first base 11, the structure of the second upper connecting rod 123 and the connection relationship between the second threaded connector 127 and the first base 13, and the structure of the second lower connecting rod 124 and the connection relationship between the second threaded connector 127 and the first base 11 may be the same as the structure of the first upper connecting rod 121 and the connection relationship between the first threaded connector 126 and the first base 13. That is, the structure of the first lower connecting rod 122 is the same as that of the first upper connecting rod 121; the connection relationship between the first lower connecting rod 122 and the first threaded connector 126 is the same as the connection relationship between the first upper connecting rod 121 and the first threaded connector 126, and the connection relationship between the first lower connecting rod 122 and the first base 11 is the same as the connection relationship between the first upper connecting rod 121 and the first base 11. The structure of the second upper connection rod 123 is the same as that of the first upper connection rod 121; the connection relationship between the second upper connection rod 123 and the first threaded connection piece 126 is the same as the connection relationship between the first upper connection rod 121 and the first threaded connection piece 126, and the connection relationship between the second upper connection rod 123 and the first base 11 is the same as the connection relationship between the first upper connection rod 121 and the first base 11. The second lower connecting rod 124 has the same structure as the first upper connecting rod 121; the connection relationship between the second lower connecting rod 124 and the first threaded connector 126 is the same as the connection relationship between the first upper connecting rod 121 and the first threaded connector 126, and the connection relationship between the second lower connecting rod 124 and the first base 11 is the same as the connection relationship between the first upper connecting rod 121 and the first base 11.

Further, as shown in fig. 7 and 8, the number of the connection pieces 121c may be two, and the two connection pieces 121c are disposed between the third through hole and the fourth through hole at intervals along the extending direction of the first connection bar 121 a. Adopt two connecting pieces to fix first connecting strip and second connecting strip, realize easily that stability is good.

Alternatively, as shown in fig. 2, the first connection holder 13 may include a holder body 131, a sliding shaft 132, and a slider 133. Fig. 9 is a front view of a first connector provided in an embodiment of the present invention, and fig. 10 is a side view of the first connector provided in the embodiment of the present invention. Referring to fig. 9, 10 and 2, the seat body 131 is a cavity structure with an opening at one end, the sliding shaft 132 is fixed in the cavity structure, and the extending direction of the sliding shaft 132 is parallel to the plane of the opening in the cavity structure. The slider 133 is slidably disposed on the sliding shaft 132, and the first end 31 of the guide bar 30 is fixedly connected to the slider 133 through the opening of the cavity structure. The part of the cavity structure opposite to the opening is provided with a fifth through hole H hinged with the second end of the first upper connecting rod 121 and a sixth through hole I hinged with the second end of the second upper connecting rod 123.

In the present embodiment, the structure of the second connecting seat 23 and the connection relationship between the guide bar 30 and the second height adjusting mechanism 22 may be the same as the structure of the first connecting seat 13 and the connection relationship between the guide bar 30 and the first height adjusting mechanism 12. That is, the structure of the second connecting seat 23 is the same as that of the first connecting seat 13; the connection relationship between the second connecting seat 23 and the guide bar 30 is the same as the connection relationship between the first connecting seat 13 and the guide bar 30, and the connection relationship between the second connecting seat 23 and the second height adjusting mechanism 22 is the same as the connection relationship between the first connecting seat 13 and the second height adjusting mechanism 22.

Through set up the sliding shaft in first connecting seat and second connecting seat to set up on the sliding shaft with slider slidable of deflector fixed connection, remove the slider position on the sliding shaft and can adjust the position of guide way in the deflector on the horizontal direction, realize that the guide way in all the guide units on the guide rail is on same straight line, so that the secondary carries out linear motion.

Further, as shown in fig. 2, the first connection seat 13 may further include a first adjustment screw 134 and a second adjustment screw 135. As shown in fig. 9 and 10, a first surface of the cavity structure adjacent to the opening is provided with a screw hole J in threaded connection with the first adjusting screw 134, a second surface of the cavity structure adjacent to the opening is provided with a screw hole K in threaded connection with the second adjusting screw 135, and the second surface is opposite to the first surface. A first adjustment screw 134 abuts the surface of the slider 133 facing the first surface and a second adjustment screw 135 abuts the surface of the slider 133 facing the second surface.

Fig. 11 is a schematic structural diagram of a sliding shaft according to an embodiment of the present invention. Referring to fig. 11, a first end of the sliding shaft 132 may be provided with a locking protrusion 132a, and a second end M of the sliding shaft 132 may be provided with a through-hole 132b into which a locking cotter pin is inserted. As shown in fig. 9 and 10, the first and second surfaces of the cavity structure adjacent to the opening may be further provided with a through hole L into which the sliding shaft 132 is inserted. The through holes correspondingly formed in the cavity structure are utilized, and the sliding shaft can be fixed on the connecting seat through the matching of the convex blocks and the split pins, so that the sliding shaft is convenient to disassemble. In practical applications, the sliding shaft 132 can also be directly fixed to the connecting seat by welding or the like.

In practical application, the structure of the pins inserted into the two ends of the connecting strip can be the same as that of the sliding shaft, so that firm connection and convenient disassembly can be realized, and detailed description is omitted.

Fig. 12 is a front view of a first base provided in an embodiment of the present invention, and fig. 13 is a top view of the first base provided in the embodiment of the present invention. Referring to fig. 12 and 13, alternatively, the first base 11 may include a bottom plate 111 and a side plate 112 vertically disposed on the bottom plate 111, and the side plate 112 is provided with a seventh through hole M hinged to the second end of the second lower connecting rod 122 and an eighth through hole N hinged to the second end of the second lower connecting rod 124. The first base is fixed on the installation surface of the guide rail by the bottom plate, and the side plate is hinged with the connecting plate.

In the present embodiment, the structure of the second base 21 and the connection relationship with the second height adjustment mechanism 22 may be the same as those of the first base 11 and the connection relationship with the first height adjustment mechanism 21. That is, the second chassis 21 has the same structure as the first chassis 11; the connection relationship between the second base 21 and the second height adjustment mechanism 22 is the same as the connection relationship between the first base 11 and the first height adjustment mechanism 21.

Further, as shown in fig. 13, the projection of the side plate 112 on the surface of the bottom plate 111 where the side plate 112 is disposed may be a closed figure, and at this time, the strength of the side plate 112 is greater, which is beneficial to the stability of the whole guiding unit.

Furthermore, as shown in fig. 13, the bottom plate 111 may be provided with a ninth through hole O inside the closed pattern to reduce the contact area between the bottom plate 111 and the rail mounting surface, and to avoid adverse effects caused by the uneven rail mounting surface as much as possible.

Fig. 14 is a front view of a guide strip provided in an embodiment of the present invention. Referring to fig. 14, optionally, the guide strip 30 may be bent between the first end 31 and the second end 32 to form a guide groove 33, and the requirement on the thickness of the guide strip is low, so that the material consumption can be reduced.

Further, as shown in fig. 14, a reinforcing plate 34 may be formed around the guide groove 33 to enhance the strength of the guide bar.

In practical applications, a guide groove may be directly formed between the first end 31 and the second end 32 of the guide bar 30.

Fig. 15 is a top view of a guide strip provided by an embodiment of the present invention. Referring to fig. 15 and 14, further, the first end 31 and the second end 32 of the guide bar 30 may be provided with a tenth through hole P into which a screw is inserted. A screw is inserted into a tenth through hole P formed at the first end 31 of the guide strip 30, so that the guide strip 30 and the first connecting seat 13 can be fixedly connected; a screw is inserted into the tenth through hole P formed at the second end 32 of the guide bar 30, so that the guide bar 30 and the second connecting seat 23 can be fixedly connected.

For example, as shown in fig. 15, the number of the tenth through holes P disposed at the first end 31 and the second end 32 of the guide strip 30 may be four, and the four tenth through holes P are arranged in an array and are firmly connected.

Further, as shown in fig. 14 and 15, an eleventh through hole Q into which a positioning pin is inserted may be further provided between the tenth through hole P provided at the first end 31 of the guide bar 30 and the tenth through hole P provided at the second end 32 of the guide bar 30. Positioning pins extending to the housing bodies of the first and second connecting

housings

13 and 23 are inserted into the eleventh through-holes Q to perform positioning after the position of the guide groove in the horizontal direction is adjusted, preventing the guide groove from deviating from the adjusted position.

The embodiment of the invention provides a method for installing a guide rail of a linear motor, which is suitable for installing the guide rail of the linear motor shown in figure 1. The installation method comprises the following steps:

step S1: respectively and fixedly mounting a first base and a second base on the mounting surface of the guide rail;

step S2: a first height adjusting mechanism and a first connecting seat are arranged on the first base, and a second height adjusting mechanism and a second connecting seat are arranged on the second base;

step S3: fixedly connecting the guide strip with the first connecting seat and the second connecting seat respectively;

step S4: based on a height measuring instrument, a screw rod in a first height adjusting mechanism and a screw rod in a second height adjusting mechanism are rotated, the distance between a first threaded connecting piece and a second threaded connecting piece in the first height adjusting mechanism and the second height adjusting mechanism is changed, a first upper connecting rod, a first lower connecting rod, a second upper connecting rod and a second lower connecting rod in the first height adjusting mechanism and the second height adjusting mechanism are driven to move, the height of a guide groove in a guide strip relative to the installation surface of a guide rail is adjusted, and the height of the guide groove in a plurality of guide units relative to the installation surface of the guide rail is adjusted until the heights of the guide grooves in the plurality of guide units are consistent.

In practical application, the height measuring instrument can be realized by a level gauge.

Optionally, when the first connecting seat and the second connecting seat each include a seat body, a sliding shaft, and a sliding block, the mounting method may further include:

based on the linear measuring instrument, the sliding block is slid on the sliding shaft, and the positions of the guide grooves in the guide strips between the first connecting seat and the second connecting seat are adjusted until the guide grooves in the plurality of guide units are on the same straight line.

In practical application, the straight line measuring instrument can be realized by a laser.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The guide rail of the linear motor is characterized by comprising a plurality of guide units which are arranged at intervals along the extension direction of a straight line, wherein each guide unit comprises a first base (11), a first height adjusting mechanism (12), a first connecting seat (13), a second base (21), a second height adjusting mechanism (22), a second connecting seat (23) and a guide strip (30); the first base (11) and the second base (21) are respectively fixedly installed on the installation surface of the guide rail, and the extending direction of the guide strip (30) is parallel to the installation surface of the guide rail; a guide groove (33) is arranged between the first end (31) and the second end (32) of the guide strip (30), and the guide groove (33) is communicated in the extension direction of the straight line; the first connecting seat (13) is fixedly connected with a first end (31) of the guide strip (30), and the second connecting seat (23) is fixedly connected with a second end (32) of the guide strip (30);

the first height adjusting mechanism (12) comprises a first upper connecting rod (121), a first lower connecting rod (122), a second upper connecting rod (123), a second lower connecting rod (124), a screw rod (125), a first threaded connecting piece (126) and a second threaded connecting piece (127); the extending direction of the screw rod (125) is parallel to the mounting surface of the guide rail; the screw threads of the first end and the second end of the screw rod (125) are opposite in rotating direction, the first threaded connector (126) is in threaded connection with the first end of the screw rod (125), and the second threaded connector (127) is in threaded connection with the second end of the screw rod (125); the first end of the first upper connecting rod (121) and the first end of the first lower connecting rod (122) are respectively hinged with the first threaded connecting piece (126), and the first end of the second upper connecting rod (123) and the first end of the second lower connecting rod (124) are respectively hinged with the second threaded connecting piece (127); the second end of the first upper connecting rod (121) and the second end of the second upper connecting rod (123) are respectively hinged with the first connecting seat (13), and the second end of the first lower connecting rod (122) and the second end of the second lower connecting rod (124) are respectively hinged with the first base (11); the structures of the second base (21), the second height adjusting mechanism (22) and the second connecting seat (23) and the connection relationship between the structures are the same as those of the first base (11), the first height adjusting mechanism (12) and the first connecting seat (13).

2. Guide rail according to claim 1, characterized in that the first threaded connection (126) comprises a pin (126a), that the first end (a) and the second end (B) of the pin (126a) are provided with an anti-loosening element, that a threaded hole (C) is provided between the first end (a) and the second end (B) of the pin (126a), the extension of the threaded hole (C) being perpendicular to the extension of the pin (126 a); the pin (126a) is sleeved outside the first end of the screw rod (125) through the screw hole (C), and the first end of the first upper connecting rod (121) and the first end of the first lower connecting rod (122) are both provided with through holes sleeved between the first end (A) and the second end (B) of the pin (126 a);

the structure of the second threaded connector (127) and the connection relationship among the screw (125), the second upper connecting rod (123) and the second lower connecting rod (124) are the same as the structure of the first threaded connector (126) and the connection relationship among the screw (125), the first upper connecting rod (121) and the first lower connecting rod (122).

3. Guide rail according to claim 2, characterized in that the first end (a) of the pin (126a) is provided with a locking projection and the second end (B) of the pin (126a) is provided with a through hole for inserting a locking cotter pin, the through hole of the second end (B) of the pin (126a) extending in a direction parallel to the extension of the threaded hole (C).

4. The guide rail according to claim 3, wherein the first threaded connector (126) further comprises a joint (126b), a first through hole (D) and a second through hole (E) are arranged on the joint (126b), the extending direction of the first through hole (D) is perpendicular to the extending direction of the second through hole (E), and the first through hole (D) is communicated with the second through hole (E); the joint (126b) is sleeved outside the screw rod (125) through the first through hole (D), and the joint (126b) is sleeved outside the pin (126a) through the second through hole (E).

5. Guide rail according to any of claims 1 to 4, characterized in that the first upper connecting rod (121) comprises a first connecting strip (121a), a second connecting strip (121b) and at least one connecting piece (121 c); the first connecting strip (121a) and the second connecting strip (121b) are oppositely arranged, and the at least one connecting piece (121c) is arranged between the first connecting strip (121a) and the second connecting strip (121b) and is fixedly connected with the first connecting strip (121a) and the second connecting strip (121b) respectively; the first end (F) of the first connecting bar (121a) is provided with a third through hole hinged with the first threaded connector (126), and the extension direction of the third through hole is perpendicular to the surface of the first connecting bar (121a) opposite to the second connecting bar (121 b); the second end (G) of the first connecting bar (121a) is provided with a fourth through hole hinged with the first connecting seat (13), and the extending direction of the fourth through hole is vertical to the surface of the second connecting bar (121b) opposite to the first connecting bar (121 a); the structure of the second connecting strip (121b) and the connection relation between the second connecting strip and the first threaded connector (126) and the first connecting seat (13) are the same as the structure of the first connecting strip (121a) and the connection relation between the first threaded connector (126) and the first connecting seat (13);

the structure of the first lower connecting rod (122) and the connection relation between the first threaded connecting piece (126) and the first base (11), the structure of the second upper connecting rod (123) and the connection relation between the second threaded connecting piece (127) and the first connecting base (13), and the structure of the second lower connecting rod (124) and the connection relation between the second threaded connecting piece (127) and the first base (11) are the same as the structure of the first upper connecting rod (121) and the connection relation between the first threaded connecting piece (126) and the first connecting base (13).

6. The guide rail according to claim 5, wherein the number of the connecting pieces (121c) is two, and two connecting pieces (121c) are arranged between the third through hole and the fourth through hole at intervals along the extending direction of the first connecting bar (121 a).

7. Guide rail according to any of claims 1 to 4, characterized in that the first connection seat (13) comprises a seat body (131), a sliding shaft (132) and a slide (133); the base body (131) is a cavity structure with an opening at one end, the sliding shaft (132) is fixed in the cavity structure, and the extending direction of the sliding shaft (132) is parallel to the plane of the opening in the cavity structure; the sliding block (133) is slidably arranged on the sliding shaft (132), and the first end (31) of the guide strip (30) is fixedly connected with the sliding block (133) through the opening of the cavity structure; a fifth through hole (H) hinged with the second end of the first upper connecting rod (121) and a sixth through hole (I) hinged with the second end of the second upper connecting rod (123) are formed in the part, opposite to the opening, of the cavity structure;

the structure of the second connecting seat (23) and the connection relation between the second connecting seat and the guide strip (30) and the second height adjusting mechanism (22) are the same as the structure of the first connecting seat (13) and the connection relation between the guide strip (30) and the first height adjusting mechanism (12).

8. Guide rail according to claim 7, characterized in that the first connection seat (13) further comprises a first adjusting screw (134) and a second adjusting screw (135), that a first surface of the housing structure adjacent to the opening is provided with a threaded hole (J) for screwing with the first adjusting screw (134), that a second surface of the housing structure adjacent to the opening is provided with a threaded hole (K) for screwing with the second adjusting screw (135), and that the second surface is arranged opposite to the first surface; the first adjusting screw (134) abuts against a surface of the slider (133) facing the first surface, and the second adjusting screw (135) abuts against a surface of the slider (133) facing the second surface.

9. A method of mounting a guide rail of a linear motor according to any one of claims 1 to 8, comprising:

10. The mounting method according to claim 9, wherein when the first and second connection holders each include a holder body, a sliding shaft, and a slider, the mounting method further includes: