CN112758802A - Electric telescopic positioning device - Google Patents

Electric telescopic positioning device Download PDF

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Publication number
CN112758802A
CN112758802A CN202110040589.8A CN202110040589A CN112758802A CN 112758802 A CN112758802 A CN 112758802A CN 202110040589 A CN202110040589 A CN 202110040589A CN 112758802 A CN112758802 A CN 112758802A
Authority
CN
China
Prior art keywords
fixed
electric telescopic
box body
telescopic positioning
hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110040589.8A
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Chinese (zh)
Inventor
马少伟
高云峰
林魁圣
刘红伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dalian Binhai Crane Hoist Co ltd
Original Assignee
Dalian Binhai Crane Hoist Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dalian Binhai Crane Hoist Co ltd filed Critical Dalian Binhai Crane Hoist Co ltd
Priority to CN202110040589.8A priority Critical patent/CN112758802A/en
Publication of CN112758802A publication Critical patent/CN112758802A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
    • F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

An electric telescopic positioning device of a hoisting sling comprises an upper cross beam, wherein two ends of the upper cross beam are fixed with hoisting shafts, and slab clamps are arranged on two sides of the lower portion of the upper cross beam. The upper ends of a pair of pull rods of the slab clamp are hinged through a hinge shaft i, and the lower ends of the pull rods of the slab clamp are hinged with the upper ends of a pair of clamp arms through hinge shafts ii respectively. The lower middle part of the forceps arm is provided with a hinge shaft iii, and the lower end of the forceps arm is fixed with a forceps claw. Two ends of the lower beam are fixed with the slab clamp. It is characterized in that the middle part of the lower cross beam is fixed with an electric telescopic positioning seat through a bolt i. The electric telescopic positioning seat adopting the technical scheme is installed on the slab clamp, so that the slab clamp can adapt to a complex and changeable field use environment, slabs with different thicknesses can be lifted by only using the slab clamp with one specification and model, and the number of blocks for lifting the slabs at a time can be adjusted. Thereby greatly improving, reducing the production cost and improving the operation safety.

Description

Electric telescopic positioning device
Technical Field
The invention relates to a hoisting sling.
Background
In a slab production line, slabs 23 with different thicknesses are often required to be hoisted according to different process requirements, and the number of the slabs 23 hoisted at a time is different according to different working conditions, namely, the slabs are sometimes single or multiple. And (4) hoisting the slab 23 by using a hoisting sling slab clamp. The slab clamp structure is shown in the attached figures 1 and 2, and comprises an upper cross beam 26 with hanging shafts 25 fixed at the upper two ends, and the slab clamp is arranged at the two sides below the upper cross beam 26. The upper ends of a pair of pull rods 27 of the slab clamp are hinged via hinge shafts i-53 and the lower ends are hinged via hinge shafts ii-54 to the upper ends of a pair of clamp arms 28, respectively. The lower middle part of the clamp arm 28 is provided with a hinge shaft iii-55 and the lower end is fixed with a clamp claw 21. During operation, the slab clamp is placed on a steel plate through the fixed positioning seat 22, the hanging shaft 25 is lifted through the crane hook, the upper cross beam 26 drives the pull rod 27 and the clamp arm 28, and the slab 23 is clamped by the clamp claw 21 to lift the slab 23. The fixed positioning seat 22 is a device which is arranged in the slab clamp and has the functions of controlling the thickness of the lifted slab 23 and the number of the single lifted slab 23. The vertical height between the lower surface of the fixed positioning seat 22 and the clamp teeth therefore determines the thickness of the slabs 23 that can be handled by the slab clamp and the number of slabs 23 handled in a single pass. As shown in fig. 3 and 4. The positioning seats in the conventional slab clamp are fixed, so that the slab clamp with the fixed positioning seat 22 can only lift a fixed number of slabs 23, for example, only one slab at a time or only two slabs at a time. The device can not flexibly adapt to the changeable use environment on site, and has low use efficiency. In order to lift the plate blanks 23 with different specifications in the production process, plate blank clamps with various specifications are often required to be configured, so that the waste of resources is caused, and the workload of equipment maintenance is increased. Frequent replacement of slab clamps of different specifications also results in time waste, reduced efficiency, and potential safety hazards.
Disclosure of Invention
In order to solve the problems in the prior art, the invention adopts the following technical scheme: an electric telescopic positioning device of a hoisting sling comprises an upper cross beam, wherein two ends of the upper cross beam are fixed with hoisting shafts, and slab clamps are arranged on two sides of the lower portion of the upper cross beam. The upper ends of a pair of pull rods of the slab clamp are hinged through a hinge shaft i, and the lower ends of the pull rods of the slab clamp are hinged with the upper ends of a pair of clamp arms through hinge shafts ii respectively. The lower middle part of the forceps arm is provided with a hinge shaft iii, and the lower end of the forceps arm is fixed with a forceps claw. Two ends of the lower beam are fixed with the slab clamp. It is characterized in that the middle part of the lower beam is fixed with an electric telescopic positioning mechanism through a bolt i. The electric telescopic positioning mechanism comprises an inner box body inside the outer box body and a motor installed on the outer box body. The motor is a speed reducing motor. The outer box body comprises a long side plate of the outer box body, a short side plate of the outer box body, an upper transverse plate and a lower transverse plate, wherein the two sides of the lower side of the outer box body are fixed into a group, the protrusions are arranged on the two sides of the lower side of the outer box body, the upper side of the outer box body is isosceles trapezoid, the short side plate of the. The upper transverse plate and the upper cover plate are fixed with each other, and a round hole i is arranged on the upper cover plate. The mounting plate is fixed on the bulge below the long side plate of the outer box body. And a side bracket is fixed above the lower template at the outer side of the long side plate of the outer box body through a screw i. The motor is fixed on the side bracket. The pinion is fixed at the output shaft end of the motor. The buffer frame is provided with a reversed-inverted-V-shaped cross section and a central through hole, and the buffer frame is fixed below the upper cover plate by a bolt ii after a spring is arranged in the buffer frame. The inverted T-shaped buffer shaft sequentially penetrates through the central through hole of the buffer frame, the spring and the round hole i arranged on the upper cover plate from bottom to top and is fastened by the nut. The spring is a disc spring. The lower template is provided with a round hole ii which is coaxial with the round hole i on the upper cover plate, a through hole i is arranged on a flanging of the guide frame with the inverted-V-shaped cross section, an inner groove is arranged on the outer circumferential surface of the inner gear ring, a through hole iii is arranged on the periphery of the inner gear ring, and a screw ii penetrates through the flanging and is fastened on the lower template together with the inner gear ring. An outer ring gear having a through hole iv at the periphery and an inner groove at the inner peripheral surface is provided. And balls are arranged between the outer groove of the inner gear ring and the inner groove of the outer gear ring. The external gear ring is meshed with the pinion. The connecting cover is provided with a bowl-shaped connecting cover with an inverted cross section, the large circular periphery of the connecting cover is provided with a through hole ii, and the small circular periphery of the connecting cover is provided with a vertical long hole. The bolts iii penetrate through the through holes ii on the large circle periphery of the outer gear ring and the through holes iv on the connecting cover to fasten the connecting cover and the outer gear ring. The inner gear ring and the lower template on the outer box body are fixed through uniformly distributed screws ii, and the outer gear ring and the connecting cover are fastened through uniformly distributed bolts iii. And two sides of the long side plate in the area below the lower template are both fixed with sliding rail top block structures. The inner box body comprises a pair of inner box body U-shaped notch plates, a pair of inner box body long vertical plates, inner box body short vertical plates and a square end cover which is arranged at the lower bottom of the U-shaped notch, and the lower part of the structure is fixed with the electric telescopic positioning seat into a whole. The electric telescopic positioning seat is internally provided with a roller. The center of the square end cover is provided with a nut. Vertical sliding rails are arranged on the two sides of the U-shaped notch plate of each inner box body and the outer side of the long vertical plate of each inner box body. And sliding rail jacking block structures are arranged at the outer side sliding rail positions of the inner box body corresponding to the outer box body long vertical plate and the outer box body short vertical plate. The sliding rail top block structure comprises a guide strip fastened on a gland by a screw iii, and the gland is fastened on the long side plate by a screw iv. The nut is arranged between the end cover ii and a nut frame fixed on the long vertical plate of the inner box body. Radial movable gaps are arranged between the nut and the end cover ii as well as the nut frame. The upper end of the screw rod is provided with a transverse hole, the lifting block with the large diameter arranged at the middle upper part is arranged in the nut and the guide frame, and the upper end of the screw rod is inserted into the transverse hole and the vertical long hole by a transition pin shaft. And nuts are fastened at two ends of the transition pin shaft. The lower surface of the buffer shaft presses the upper surface of the screw rod. A movable space is arranged between the upper end surface of the lifting block and the bottom of the bowl-shaped connecting cover which is reversely buckled.
The electric telescopic positioning seat adopting the technical scheme is installed on the slab clamp, so that the slab clamp can adapt to a complex and changeable field use environment, slabs with different thicknesses can be lifted by only using the slab clamp with one specification and model, and the number of blocks for lifting the slabs at a time can be adjusted. Thereby greatly improving, reducing the production cost and improving the operation safety.
Drawings
The invention will now be described in detail with reference to the accompanying drawings and parts and reference numerals:
fig. 1 is a schematic diagram of a slab clamp structure for installing a conventional positioning seat in the prior art.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a schematic view of fig. 2 for lifting a single workpiece by using a local-fixed positioning seat.
Fig. 4 is a schematic view of the fixed positioning seat in fig. 2 for hoisting two workpieces.
Fig. 5 is a schematic diagram of a slab clamp structure of an electric telescopic positioning device provided with the lifting sling of the invention.
Fig. 6 is a left side view of fig. 5.
Fig. 7 is a schematic view of a single workpiece lifted by the electric telescopic positioning device in a local part in fig. 6.
FIG. 8 is a schematic view of the electric telescopic positioning device in FIG. 6 for lifting a plurality of workpieces.
Fig. 9 is an isometric view of the electric telescopic positioning device of the present invention.
Fig. 10 is a left side view of fig. 9.
Fig. 11 is a front view of fig. 9.
Fig. 12 is a front view of the outer case of the electric telescopic positioning device of the present invention.
Fig. 13 is a left side view of fig. 12.
Fig. 14 is a sectional view taken along the line a-a of the elevating position of the electric telescopic positioning device of the present invention.
FIG. 15 is a sectional view taken along line A-A of the lowering position of the electric telescopic positioning device of the present invention.
Fig. 16 is an enlarged view of a portion i of fig. 14.
Fig. 17 is an enlarged view of the electric telescopic part of fig. 14.
FIG. 18 is an isometric view of the inner housing structure of the electric telescopic positioning device of the present invention.
Fig. 19 is a front view of fig. 18.
Fig. 20 is a left side view of fig. 18.
Fig. 21 is a schematic structural view of the slide rail and the slide rail top block in section B-B of fig. 18.
Fig. 22 is an enlarged view of a portion ii in fig. 14.
Fig. 23 is a cross-sectional view taken along line C-C of fig. 16.
In the figure:
1. the device comprises an outer box body long vertical plate, 2 parts of an upper cover plate, 3 parts of a buffer frame, 4 parts of a spring, 5 parts of a buffer shaft, 6 parts of a motor, 7 parts of a pinion, 8 parts of a transition pin shaft, 9 parts of a connecting cover, 10 parts of an outer gear ring, 11 parts of an inner gear ring, 12 parts of a guide frame, 13 parts of a lead screw, 14 parts of a square end cover, 15 parts of a nut, 16 parts of a nut frame, 17 parts of an inner box body side vertical plate, 18 parts of a slide rail, 19 parts of a slide rail top block, 20 parts of a roller, 21 parts of a jaw, 22 parts of a fixed positioning seat, 23 parts ofThe telescopic positioning seat comprises 25 parts of a telescopic positioning seat, 26 parts of an upper cross beam, 27 parts of a pull rod, 28 parts of a clamp arm, 29 parts of a lower cross beam, 30 parts of bolts i, 31 parts of balls, 32 parts of flanges, 33 parts of a gland, 34 parts of protrusions, 35 parts of an outer box short vertical plate, 36 parts of an inner box U-shaped notch plate, 37 parts of a side support, 38 parts of round holes i, 39 parts of bolts i, 40 parts of an upper template, 41 parts of a lower template, 42 parts of bolts ii, 43 parts of nuts, 44 parts of round holes ii, 45 parts of a lifting block, 46 parts of bolts ii, 47 parts of through holes i, 48 parts of bolts iii, 49 parts of cross holes, 50 parts of through holes ii, 51 parts of through holes iii and 52 parts ofivAnd 53, hinge shafts i, 54, hinge shafts ii, 55, hinge shafts iii, 56, screws iii, 57, screws iv, 58, inner box body short vertical plates and 59, vertical long holes.
Detailed Description
In order to overcome the defects in the prior art, the invention provides the following technical scheme: an electric telescopic positioning device of a hoisting sling comprises an upper cross beam 26, wherein two ends of the upper part of the upper cross beam are fixed with hoisting shafts 25, and slab clamps are arranged on two sides of the lower part of the upper cross beam 26. The upper ends of a pair of pull rods 27 of the slab clamp are hinged via hinge shafts i-53 and the lower ends are hinged via hinge shafts ii-54 to the upper ends of a pair of clamp arms 28, respectively. The lower middle part of the clamp arm 28 is provided with a hinge shaft iii-55, the lower end is fixed with a clamp claw 21, and the two ends of the lower beam 29 are fixed with the slab clamp. It is characterized in that the middle part of the lower beam 29 is fixed with an electric telescopic positioning mechanism through a bolt i-30. The electric telescopic positioning mechanism comprises an inner box body inside an outer box body and a motor 6 installed on the outer box body. The motor 6 is a reduction motor.
The outer box comprises a long side plate 1 of the outer box, a short side plate 35 of the outer box, an upper transverse plate 40 and a lower transverse plate 41 in the horizontal direction, wherein the two sides of the lower part of the outer box are mutually fixed into a group, the protrusions 34 are arranged on the two sides of the lower part of the outer box, and the upper part of the outer box is in an isosceles trapezoid shape. The upper cross plate 40 and the upper cover plate 2 are fixed with each other. The upper cover plate 2 is provided with round holes i-38. The mounting plate 36 is fixed on the bulge 34 under the long side plate 1 of the outer box body. A side bracket 37 is fixed on the upper part of the lower template 41 at the outer side of the long side plate 1 of the outer box body through screws i-39. The motor 6 is fixed on the side bracket 37. The pinion 7 is fixed to an output shaft end of the motor 6. A buffer frame 3 with an inverted-V-shaped cross section and a central through hole is arranged, and the buffer frame 3 is internally provided with a spring 4 and then fixed below the upper cover plate 2 by bolts ii-42. The spring 4 is a disc spring. The inverted T-shaped buffer shaft 5 sequentially penetrates through the central through hole of the buffer frame 3, the spring 4 and the round hole i-38 arranged on the upper cover plate 2 from bottom to top and is fastened by a nut 43. The lower template 41 is provided with round holes ii-44 which are coaxial with the round holes i-38 on the upper cover plate 2, the flanging 32 of the guide frame 12 with the inverted-V-shaped cross section is provided with through holes i-47, the outer circumferential surface of the inner gear ring 11 is provided with an inner groove and the periphery is provided with through holes iii-51, and screws ii-46 penetrate through the flanging 32 and are fastened on the lower template 41 together with the inner gear ring 11. An outer ring gear 10 having a peripheral through-hole iv-52 and an inner circumferential surface provided with an inner groove. And balls 31 are arranged between the outer groove of the inner gear ring 11 and the inner groove of the outer gear ring 10. The external gear ring 10 meshes with the pinion 7. A connecting cover 9 having a cross section of an inverted bowl shape is provided, and the connecting cover 9 is provided with through holes ii-50 on its large circumference and vertically elongated holes 59 on its small circumference. The bolts iii-48 pass through the through holes ii-50 on the large circumferential periphery of the outer ring gear 10 and the through holes iv-52 on the connecting cover 9 to fasten the connecting cover 9 to the outer ring gear 10. The inner gear ring 11 and the lower template 41 on the outer box body 1 are fixed through uniformly distributed screws ii-46, and the outer gear ring 10 and the connecting cover 9 are fixed through uniformly distributed bolts iii-48. In this case, the number of screws ii-46 and bolts iii-48 is 20. The two sides of the long side plate 1 in the area below the lower template 41 are both fixed with a sliding rail top block structure.
The inner box body comprises a pair of inner box body U-shaped notch plates 36, a pair of inner box body long vertical plates 17, inner box body short vertical plates 58 and a square end cover 14 at the lower bottom of the U-shaped notch, which are combined to form a hollow structure, and the lower part of the structure is fixed with the electric telescopic positioning seat 24 into a whole. The electric telescopic positioning seat 24 is internally provided with the roller 20, and the roller 20 can protect the contact plate blank 23 from being damaged when in work. The square end cap 14 is provided with a nut 15 in the center. The nut 15 is placed between the end caps ii-14 and a nut holder 16 fixed to the long upright 17 of the inner box. Radial play is provided between the nut 15 and the end caps ii-14 and nut holder 16. Vertical slide rails 18 are arranged on two sides of each inner box U-shaped notch plate 51 and the outer side of each inner box long vertical plate 17. And sliding rail jacking block structures are arranged at the positions of the outer sliding rails 18 of the inner box corresponding to the outer box long vertical plate 1 and the outer box short vertical plate 35. This slide rail top block structure includes guide bars 19 fastened to gland 33 by screws iii-56. The gland 33 is fastened to the long side plate 1 by screws iv-57. The inner box body is provided with a slide rail 18 which is contacted with the top block of the slide rail of the outer box body, and the inner box body is restrained to only move up and down along the vertical direction. The screw 13 having a transverse hole 49 at the upper end thereof and the large-diameter lifter block 45 provided at the middle upper portion thereof are inserted into the nut 15 and the guide frame 12. The upper end of the screw rod 13 is inserted into the transverse hole 49 and the vertical long hole 59 by the transition pin shaft 8. Nuts are fastened at two ends of the transition pin shaft 8. The lower surface of the buffer shaft 5 presses the upper surface of the lead screw 13. A movable space is arranged between the upper end surface of the lifting block 45 and the bottom of the bowl-shaped inverted connecting cover 9.
The working process of the electric telescopic positioning device comprises the following steps:
the pinion 7 fixed at the lower shaft end of the speed reducing motor 6 is meshed with the outer gear ring 10 of the slewing bearing mechanism to drive the slewing bearing mechanism to rotate in the forward and reverse directions. The outer gear ring 10 drives the transition pin shaft 8 to drive the screw rod 13 to rotate through the connecting cover 9, so that the nut 15 mounted on the inner box body moves up and down, and the inner box body connected with the nut 15 is lifted in the outer box body.
The roller 20 located in the inner box body firstly contacts the slab 23 when the slab clamp works, and the impact force generated by the self weight and falling speed of the slab clamp can drive the square nut 15 to move upwards by the inner box body, so that the screw 13 moves upwards. At this time, the buffer shaft 5 tightly supporting the upper surface of the screw 13 slowly presses the spring (4) to contract under the pressure of the upward movement of the screw 13, so as to absorb the impact force caused by the impact, thereby playing a role in protecting the screw 13 and the screw threads of the nut 15. Because the small circle periphery of connecting the lid 9 is equipped with vertical slot hole 59, the leading truck 12 of installation lead screw 13 has reserved the activity space simultaneously, and lead screw 13 can freely upward movement when the striking takes place, and can not hit connecting the lid 9 and transition round pin axle 8, the effectual buffering regulatory effect that plays.

Claims (10)

1. The electric telescopic positioning device comprises an upper cross beam (26) of which the upper two ends are fixed with hanging shafts (25), slab clamps are arranged on two sides below the upper cross beam (26), the upper ends of a pair of pull rods (27) of the slab clamps are hinged through a hinge shaft i (53), the lower ends of the pull rods are hinged with the upper ends of a pair of clamp arms (28) through hinge shafts ii (54), the lower middle parts of the clamp arms (28) are provided with hinge shafts iii (55), the lower ends of the pull rods are fixed with clamp claws (21), and the two ends of a lower cross beam (29) are fixed with the slab clamps, and is characterized in that an electric telescopic positioning mechanism is fixed in the middle part of the lower cross beam (29) through bolts i (30).
2. The electric telescopic positioning device of claim 1, wherein the electric telescopic positioning mechanism comprises an inner box body inside an outer box body and a motor (6) arranged on the outer box body.
3. The electric telescopic positioning device of claim 2, wherein the outer box comprises a long side plate (1) of the outer box, a short side plate (35) of the outer box, an upper transverse plate (40) and a lower transverse plate (41) in the horizontal direction, wherein the two lower sides of the outer box are fixed into a group and are provided with protrusions (34) and the upper side is isosceles trapezoid; the upper transverse plate (40) and the upper cover plate (2) are fixed with each other, and a round hole i (38) is formed in the upper cover plate (2); a mounting plate (36) is fixed on the bulge (34) below the long side plate (1) of the outer box body; a side bracket (37) is fixed above an outer lower template (41) of the outer side long side plate (1) through a screw i (39); a motor (6) is arranged and fixed on the side bracket (37); the pinion (7) is fixed at the output shaft end of the motor (6); the buffer frame (3) with the inverted-V-shaped cross section and a central through hole is arranged, and a spring (4) is arranged in the buffer frame (3) and then is fixed below the upper cover plate (2) by a bolt ii (42); the inverted T-shaped buffer shaft (5) sequentially penetrates through the central through hole of the buffer frame (3), the spring (4) and a round hole i (38) formed in the upper cover plate (2) from bottom to top and is fastened by a nut (43); the lower template (41) is provided with a round hole ii (44) which is coaxial with the round hole i (38) on the upper cover plate (2), a through hole i (47) is arranged on a flanging (32) of the guide frame (12) with the inverted-V-shaped cross section, an inner groove is arranged on the outer circumferential surface of the inner gear ring (11), a through hole iii (51) is arranged on the periphery of the inner gear ring (11), and a screw ii (46) penetrates through the flanging (32) and is fastened to the lower template (41) together with the inner gear ring (; an outer gear ring (10) provided with a through hole iv (52) at the periphery and an inner groove at the inner periphery; balls (31) are arranged between the outer groove of the inner gear ring (11) and the inner groove of the outer gear ring (10);
the outer gear ring (10) is meshed with the pinion (7); the connecting cover (9) is provided with a bowl-shaped connecting cover (9) with an inverted cross section, the large circular periphery of the connecting cover (9) is provided with a through hole ii (50), and the small circular periphery is provided with a vertical long hole (59); a bolt iii (48) penetrates through a through hole ii (50) on the large circular periphery of the outer gear ring (10) and a through hole iv (52) on the connecting cover (9) to fasten the connecting cover (9) and the outer gear ring (10); a sliding rail top block structure is fixed on both sides of the long side plate (1) in the area below the lower template (41);
the inner box body comprises a pair of inner box body U-shaped notch plates (36), a pair of inner box body long vertical plates (17), inner box body short vertical plates (58) and a square end cover (14) at the bottom of the U-shaped notch, and the inner box body U-shaped notch plates, the inner box body short vertical plates and the square end cover (14) are combined to form a hollow structure, and the lower part of the hollow structure is fixed with an electric telescopic positioning seat (24) into a whole; a nut (15) is arranged in the center of the square end cover (14); vertical slide rails (18) are arranged on the two sides of each inner box body U-shaped notch plate (51) and the outer side of each inner box body long vertical plate (17); the nut (15) is arranged between the end cover ii (14) and a nut frame (16) fixed on the long vertical plate (17) of the inner box body; a radial movable gap is arranged between the nut (15) and the end cover ii (14) and the nut bracket (16);
a screw rod (13) with a cross hole (49) with a vertical long hole (59) at the upper end, a lifting block (45) with a large diameter arranged at the middle upper part is placed in the nut (15) and the guide frame (12), and the upper end of the screw rod (13) is inserted into the cross hole (49) and the vertical long hole (59) by a transition pin shaft (8); the lower surface of the buffer shaft (5) compresses the upper surface of the screw rod (13); a movable space is arranged between the upper end surface of the lifting block (45) and the bottom of the bowl-shaped inverted connecting cover (9).
4. An electric telescopic positioning device according to claim 3, characterized in that the motor (6) is a speed reducing motor.
5. An electric telescopic positioning device according to claim 3, characterized in that the spring (4) is a disc spring.
6. The electric telescopic positioning device as claimed in claim 3, wherein the electric telescopic positioning seat (24) is provided with the roller (20).
7. The electric telescopic positioning device according to claim 3, wherein slide rail top block structures are arranged at the positions of the slide rails (18) at the outer side of the inner box corresponding to the long vertical plate (1) and the short vertical plate (35) of the outer box.
8. The electric telescopic positioning device as claimed in claim 7, wherein the sliding rail top block structure comprises a guide strip (19) fastened on a gland (33) by a screw iii (56), and the gland (33) is fastened on the long side plate (1) by a screw iv (57).
9. The electric telescopic positioning device of claim 3, wherein the inner gear ring (11) is fixed with the lower template (41) on the outer box body (1) through uniformly distributed screws ii (46) and the outer gear ring (10) is fixed with the connecting cover (9) through uniformly distributed bolts iii (48).
10. The electric telescopic positioning device according to claim 3, characterized in that nuts are fastened at both ends of the transition pin shaft (8).
CN202110040589.8A 2021-01-13 2021-01-13 Electric telescopic positioning device Pending CN112758802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110040589.8A CN112758802A (en) 2021-01-13 2021-01-13 Electric telescopic positioning device

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Application Number Priority Date Filing Date Title
CN202110040589.8A CN112758802A (en) 2021-01-13 2021-01-13 Electric telescopic positioning device

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CN112758802A true CN112758802A (en) 2021-05-07

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CN202110040589.8A Pending CN112758802A (en) 2021-01-13 2021-01-13 Electric telescopic positioning device

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