CN107855753B

CN107855753B - Preassembling tool for upper steering arm and main drive of bus type escalator

Info

Publication number: CN107855753B
Application number: CN201711323566.8A
Authority: CN
Inventors: 高德祥; 徐成杰; 张雪健; 丁良
Original assignee: Hangzhou Xo Lift Co Ltd
Current assignee: Hangzhou Xo Lift Co Ltd
Priority date: 2017-12-13
Filing date: 2017-12-13
Publication date: 2023-10-03
Anticipated expiration: 2037-12-13
Also published as: CN107855753A

Abstract

The invention discloses a preassembling tool for an upper steering arm and a main drive of a bus type escalator, which comprises a base, wherein a first component for bearing and positioning the main drive and a second component for bearing and positioning the upper steering arm are arranged on the base, and the second component comprises: two pairs of adjusting seats with adjustable transverse and longitudinal positions in the same working plane; the upper steering arm comprises two side plates, and the two side plates are clamped by the positioning clamping assemblies on the adjusting seats respectively; and the two height positioning clamps are arranged on the base, and each height positioning clamp is matched with one side plate of the upper steering arm. The preassembling tool provided by the invention can effectively improve the assembly quality of the steering arm and the main drive at the upper part of the bus type escalator, improve the production efficiency, ensure the riding safety and improve the riding comfort.

Description

Preassembling tool for upper steering arm and main drive of bus type escalator

Technical Field

The invention relates to the technical field of escalators, in particular to a preassembling tool for an upper steering arm and a main drive of a bus type escalator.

Background

The upper steering arm and the main drive of the public transportation type escalator serve as key components of the escalator, and the manufacturing and assembling precision of the upper steering arm and the main drive is one of important factors for ensuring the running safety and the comfort of the public transportation type escalator. The precision of the steering arm at the upper part of the public transportation type escalator comprises the gear opening precision of a steering arm track, the gear opening precision of a tangential guide rail, the gear opening precision at the left side and the right side of the steering arm and consistency, and the tangential consistency of the tangential guide rail working surface of the steering arm at the upper part of the public transportation type escalator and the bottom diameter of a main driving step chain wheel.

The assembly of the escalator and the moving walk in the elevator industry is formed by assembling a large number of manual lifting wires and a large scale because of a large number of size specifications and huge body shapes and less use of automatic equipment or large-scale tooling equipment.

Disclosure of Invention

The invention provides a preassembling tool for an upper steering arm and a main drive of a public transportation type escalator, which can effectively improve the assembly quality of the upper steering arm and the main drive of the public transportation type escalator, improve the production efficiency, ensure the safety of taking a ladder and improve the comfort of taking the ladder.

The utility model provides a public transit formula automatic escalator upper portion steering arm and main drive's preassembly frock, includes the base, be equipped with on the base and bear the first subassembly of location main drive to and bear the second subassembly of location upper portion steering arm, this second subassembly includes:

two pairs of adjusting seats with adjustable transverse and longitudinal positions in the same working plane;

the upper steering arm comprises two side plates, and the two side plates are clamped by the positioning clamping assemblies on the adjusting seats respectively;

and the two height positioning clamps are arranged on the base, and each height positioning clamp is matched with one side plate of the upper steering arm.

The preassembling tool is used for positioning the relative positions of the upper steering arm and the main drive, temporarily connecting the upper steering arm with the main drive, and hanging the upper steering arm and the main drive into a truss of the escalator as a whole, so that the subsequent assembly of the bus escalator is facilitated.

The transverse and longitudinal positions are positions in two directions perpendicular to each other, the distance between two adjusting seats belonging to the same pair along one direction is adjustable, and the distance between two pairs of adjusting seats along the other direction is adjustable.

The upper steering arm comprises two mutually parallel side plates, each side plate is U-shaped, and the two opposite side edges of one U-shaped side plate are respectively clamped by the positioning clamping assembly on the adjusting seat.

The distance between the two opposite sides of the corresponding U-shaped side plate can be adjusted by adjusting the distance between the same adjusting seat, namely, the shape of the U-shaped opening is kept; the distance between the two pairs of adjusting seats is adjusted to match the distance between the two side plates of the upper steering arm.

The two height positioning clamps are respectively matched with the two side plates of the upper steering arm and are used for positioning the height of the upper steering arm.

Preferably, the first component includes:

a bearing buffer component supported below the main shaft in the main drive;

a top shaft assembly which abuts against a main driving sprocket in the main driving;

and the positioning assembly is matched with the tooth slot of the step chain wheel in the main drive.

The bearing buffer component is used for bearing a main shaft of the main drive, the top shaft component is used for positioning the axial position of the main drive, and the positioning component is used for positioning and bearing the step chain wheel.

In order to facilitate control of the precision of the hoisting, preferably, the first assembly further comprises: and the pre-positioning stop block is matched with the axial end face of the step chain wheel of the main drive, and is fixed on the base through a stop seat.

In the hoisting process, judging whether the hoisting position of the main drive is proper or not through the position relation between the pre-positioning stop block and the step chain wheel.

Preferably, the load bearing buffer assembly includes:

the guide cylinder is fixed on the base and extends along the vertical direction;

the sliding rod is inserted into the guide cylinder in a sliding way;

the support block is fixed at the top of the slide bar and matched with the main shaft in the main drive;

and the spring is positioned in the guide cylinder and is propped between the sliding rod and the bottom of the guide cylinder.

The bearing buffer assemblies are at least two sets, and each set of bearing buffer assembly is distributed along the direction of the main driving axis. The main drive axis direction in the present invention is the axis direction of the main shaft in the main drive unless otherwise specified.

The top of the supporting block is provided with a V-shaped groove for accommodating a main shaft of the main drive, and when the main drive is hung into the tool, the position of the main shaft in the main drive is positioned through the V-shaped groove.

The sliding rod is inserted into the guide cylinder and can move up and down along the vertical direction, and the spring plays a role in buffering.

Preferably, the top shaft assembly includes:

a top seat fixed on the base;

the screw rod is matched with the top seat and is arranged along the direction of the axis of the main drive, one end of the screw rod is a force application end, and the other end of the screw rod is abutted against a main drive sprocket in the main drive;

and the hand wheel is connected with the force application end of the screw rod.

The hand wheel is rotated to drive the screw rod to move, the main driving chain wheel is pushed to move through the screw rod, and the axial position of the main driving is positioned.

Preferably, the positioning assemblies are provided with two sets of step chain wheels which respectively correspond to the main drive, and each set of positioning assembly comprises a supporting seat fixed on the base and two supporting rollers rotatably arranged on the supporting seat;

the two support rollers are arranged side by side, the axes of the two support rollers are parallel to the main driving axis, and the outer peripheral surfaces of the two support rollers are respectively matched with tooth grooves on corresponding step chain wheels in a propping mode.

The heights of the two sets of positioning components are the same. Each support roller is installed on the base through a horizontal rotating shaft, and the outer diameter of each support roller is equal to the bottom diameter of each step sprocket.

Preferably, the base is provided with two moving seats, each moving seat is slidably mounted on the base, and the sliding direction of each moving seat is parallel to the direction of the main driving axis;

the adjusting seats belonging to the same pair are slidably arranged on the same movable seat, the sliding direction of the adjusting seats is vertical to the direction of the main driving axis, and the movable seat is provided with a screw rod mechanism for driving the same adjusting seats to be close to or far away from each other.

By adjusting the spacing between the two moving seats, the spacing between the two pairs of adjusting seats can be adjusted. The distance between the two pairs of adjusting seats is adjusted through a screw mechanism.

Preferably, the base is provided with two rails, each movable seat is slidably mounted on the corresponding rail, and the movable seat is also provided with a locking screw rod in a penetrating manner and matched with the base in a propping manner. The position of the movable seat is locked by a locking screw.

Preferably, the opposite sides of each movable seat are also respectively provided with a normal line centering assembly, and the normal line centering assembly comprises a vertical rod fixed with the movable seat and a mark block arranged at the top of the vertical rod in a sliding manner;

two tangential guide rails are fixed on each side plate of the upper steering arm, and each mark block detects the normal point position of one tangential guide rail in two sets of normal centering components on the same moving seat.

The normal line centering component is used for detecting the normal line point position of the assembled tangential guide rail.

Preferably, the positioning and clamping assembly comprises:

the positioning seat is fixed on the adjusting seat;

the barb pin is movably arranged on the positioning seat and drives the side plate part of the upper steering arm to be tightly attached to the positioning seat;

the pressing plate is arranged on the positioning seat in a swinging way to drive the track part of the upper steering arm to be tightly attached to the positioning seat.

The side plate part of the upper steering arm is pressed to the positioning seat through the barb pin, and the track part of the upper steering arm is pressed to the positioning seat through the pressing plate, so that the clamping of the upper steering arm is realized.

The preassembling tool for the upper steering arm and the main drive of the public transportation type escalator can effectively improve the assembly quality of the upper steering arm and the main drive of the public transportation type escalator, improve the production efficiency, ensure the safety of taking a ladder and improve the comfort of taking the ladder.

Drawings

Fig. 1 is a schematic view of a main drive of a bus type escalator;

fig. 2 is a schematic diagram of the mating relationship of the upper steering arm and the main drive in a bus type escalator;

FIG. 3 is a view in the direction A of FIG. 2;

FIG. 4 is a view in the direction B of FIG. 2;

FIG. 5 is a schematic view of the pre-assembly tooling of the upper steering arm and main drive of the bus escalator of the present invention;

FIG. 6 is a view in the direction C of FIG. 5;

FIG. 7 is a view in the direction D of FIG. 5;

FIG. 8 is a schematic view of a base in a pre-assembly fixture for an upper steering arm and a main drive of a bus escalator of the present invention;

FIG. 9 is a schematic view of a load bearing buffer assembly in a pre-assembly fixture for an upper steering arm and a main drive of a bus escalator of the present invention;

FIG. 10 is a schematic view of a top shaft assembly of a pre-assembly fixture for an upper steering arm and a main drive of a bus escalator of the present invention;

FIG. 11a is a schematic view of a positioning assembly in a pre-assembly fixture for an upper steering arm and a main drive of a bus escalator of the present invention;

FIG. 11b is a side view of the positioning assembly of the pre-assembly fixture of the upper steering arm and main drive of the escalator of the present invention;

FIG. 12 is a schematic view of a pre-determined stop in a pre-assembly fixture for an upper steering arm and a main drive of a bus escalator of the present invention;

FIG. 13 is a schematic view of a moving seat and an adjusting seat in a pre-assembly fixture of an upper steering arm and a main drive of a bus type escalator of the present invention;

FIG. 14 is an E-direction view in FIG. 13;

FIG. 15 is a view in the F direction of FIG. 13;

FIG. 16 is a schematic view of the second assembly of the upper steering arm and the main drive preassembly tooling of the present invention mated with the upper steering arm;

FIG. 17 is a G-view of FIG. 16;

FIG. 18 is an H-view of FIG. 16;

fig. 19a is a schematic view of a barb pin in a pre-assembly fixture of the upper steering arm and main drive of a bus escalator of the present invention;

fig. 19b is a schematic view of the bus escalator upper steering arm and main drive preassembly fixture of the present invention with the barb pin in use;

FIG. 19c is a schematic cross-sectional view at J-J of FIG. 19 b;

FIG. 19d is a schematic cross-sectional view at K-K of FIG. 19 b;

FIG. 20a is a schematic view of a platen in a positioning and clamping assembly of a pre-assembly fixture for an upper steering arm and a main drive of a bus escalator of the present invention;

FIG. 20b is an I-view of FIG. 20 a;

FIG. 21 is a schematic view of a normal centering assembly in a pre-assembly fixture of the upper steering arm and main drive of the bus escalator of the present invention;

FIG. 22 is a schematic illustration of the mating relationship of the upper steering arm and the main drive with the preassembled tool provided by the present invention;

FIG. 23 is an L-view of FIG. 22;

fig. 24 is an M-direction view in fig. 22.

In the figure: 101. a main shaft; 102. a handrail belt sprocket; 103. a step sprocket; 104. a main drive sprocket; 201. a side plate; 202. a connecting beam; 203. a track; 204. a tangential guide rail; 205. an opening connecting beam; 300. a base; 301. a work table; 302. supporting feet; 303. leveling the foot pads; 400. a load bearing buffer assembly; 401. a support block; 402. a backing plate; 403. a slide bar; 404. a guide cylinder; 405. a spring; 406. a lead screw; 407. reinforcing ribs; 408. a bottom plate; 500. a top shaft assembly; 501. a hand wheel; 502. a screw; 503. a top base; 504. a positioning ring; 600. a positioning assembly; 601. a support roller; 602. a support base; 603. a bearing; 604. a pressing plate; 605. a rotating shaft; 606. a spacer bush; 700. A pre-positioning stop block; 701. a blocking seat; 800. an adjusting seat; 801. a movable seat; 802. locking the screw rod; 803. a track; 804. a guide block; 805. a hand wheel; 806. a roller pin row; 807. a screw rod; 808. A drive nut; 809. a support plate; 810. a seat ring; 811. a planar bearing; 900. positioning and clamping the assembly; 901. a positioning seat; 902. a barb pin; 903. a pressing plate; 904. a handle; 905. a baffle column; 906. a baffle; 907. a blocking arm; 908. a spring; 909. a bar-shaped hole; 910. a support; 911. A pin shaft; 912. a push rod; 913. a handle; 914. a guide pin; 915. a spring; 916. a backing plate; 917. a cushion block; 918. a backing plate; 919. a cushion block; 110. a height positioning clamp; 111. a support rod; 112. a pressing plate; 120. a normal centering component; 121. a vertical rod; 122. a flag block; 123. a support; 124. and (5) locking the nut.

Detailed Description

The detailed technical contents and embodiments of the present invention are further described below with reference to the accompanying drawings. The figures and examples are not to be considered as limiting the technology of the invention, and any extensions and additions to the invention are to be considered as the scope of the invention.

As shown in fig. 1, 2, 3 and 4, the main drive of the bus escalator comprises a main shaft 101, and a main drive sprocket 104, a step sprocket 103 and a handrail sprocket 102 which are fixedly sleeved on the main shaft 101, wherein the number of the step sprockets 103 is two, the two step sprockets are respectively positioned at two ends of the main shaft 101, and the handrail sprocket 102 is positioned between the two step sprockets 103.

As shown in fig. 2, 3 and 4, the upper steering arm of the public transportation escalator comprises two parallel side plates 201 and a connecting beam 202 connected between the two side plates 201, tangential guide rails 204 and tracks 203 are correspondingly fixed on each side plate 201, each side plate 201 is in a U shape, and two opposite sides of the U shape are fixedly connected through an opening connecting beam 205.

As shown in fig. 5, 6 and 7, the preassembly tool provided by the invention comprises a base 300, a first component arranged on the base 300 and used for bearing and positioning a main drive, and a second component arranged on the base 300 and used for bearing and positioning an upper steering arm.

As shown in fig. 5, 6, and 7, the first assembly includes: the main drive main shaft comprises a bearing buffer assembly 400 supported below the main drive main shaft, a top shaft assembly 500 propped against a main drive sprocket in the main drive, a positioning assembly 600 matched with a tooth socket of a step sprocket in the main drive, and a pre-positioning stop block 700 matched with an axial end surface of the step sprocket in the main drive.

As shown in fig. 8, the base includes a horizontally arranged table 301 and supporting legs 302 fixed to the bottom surface of the table 301. The workbench 301 is rectangular, and the supporting feet 302 are four and distributed at four corners of the rectangle. The bottom of each supporting leg 302 is connected with a leveling pad 303 through a bolt, and the level of the workbench 301 is adjusted through the leveling pad 303. The table 301 is of steel structure.

As shown in fig. 9, the load bearing buffer assembly 400 includes: the guide cylinder 404 fixed on the workbench 301, the slide bar 403 inserted in the guide cylinder 404 in a sliding way, the supporting block 401 fixed on the top of the slide bar 403 and matched with the main shaft 101 in the main drive, the spring 405 positioned in the guide cylinder 404 and pressed between the slide bar 403 and the bottom of the guide cylinder 404, and the guide screw 406 penetrating on the guide cylinder 404 and matched with the slide bar 403.

The guide cylinder 404 is of a hollow structure, the top of the guide cylinder 404 is open, and the slide bar 403 is arranged in the guide cylinder 404. The bottom of the guide cylinder 404 is closed by a bottom plate 408, and a reinforcing rib 407 is provided between the outer periphery of the guide cylinder 404 and the bottom plate 408, and the guide cylinder 404 is fixed to the table 301 by a bolt penetrating through the bottom plate 408. The spring 405 has its ends bearing against the bottom plate 408 and the bottom of the slide bar 403, respectively.

The top of the support block 401 is provided with a V-shaped groove in which the main shaft 101 of the main drive is placed. A backing plate 402 is provided between the spindle and the walls of the V-shaped groove.

The slide bar 403 is provided with a guide groove extending in the vertical direction, and the lead screw 406 penetrates the guide cylinder 404 and extends into the guide groove, and the slide bar 403 slides only in the vertical direction without rotation under the action of the lead screw 406.

As shown in fig. 7, the load-bearing buffer assemblies 400 have two sets, which are sequentially arranged along the main driving axis direction.

As shown in fig. 10, the top shaft assembly 500 includes: the table 301 comprises a top base 503 fixed to the table 301, a screw 502 which is matched with the top base 503 and is arranged along the main driving axis direction, and a hand wheel 501 connected to one end of the screw 502.

As shown in fig. 22 and 24, the screw 502 is screwed to the top base 503, one end of the screw 502 is a force application end, the other end abuts against the main drive sprocket 104 in the main drive, the hand wheel 501 is connected to the force application end, and the screw 502 is driven to rotate by the hand wheel 501.

The screw 502 is also sleeved with a positioning ring 504, and two ends of the positioning ring 504 respectively abut against the hand wheel 501 and the top seat 503. In use, the hand wheel 501 is rotated until the end of the screw 502 abuts against the main drive sprocket 104, and the two ends of the positioning ring 504 abut against the hand wheel 501 and the top seat 503 respectively, so as to determine the axial position of the main drive.

As shown in fig. 7, the positioning assembly 600 has two sets corresponding to the two step sprockets 103 of the main drive, respectively. As shown in fig. 11a and 11b, each set of positioning assemblies includes: a support base 602 fixed to the base and two support rollers 601 rotatably installed on the support base 602.

The support base 602 is fixedly provided with a rotating shaft 605, and the rotating shaft 605 is fixed on the support base 602 through a pressing plate 604. The rotary shaft 605 is provided with a cutting surface which is matched with the pressing plate 604, and the rotation of the rotary shaft 605 is prevented by the pressing plate 604. The support roller 601 is rotatably mounted on the rotary shaft 605 through a bearing 603, and a spacer 606 is provided between the support roller 601 and the rotary shaft 605.

As shown in fig. 22 and 23, the two support rollers 601 are arranged side by side with their axes parallel to the main drive axis, and the outer peripheral surfaces of the two support rollers 601 respectively engage against the tooth grooves on the corresponding step sprockets.

As shown in fig. 12, the pre-positioning stopper 700 is fixed to the table 301 by a stopper 701, and as shown in fig. 5 and 22, the pre-positioning stopper 700 is engaged with the step sprocket 103 of the main drive, and is located on the side of the step sprocket 103 facing the main drive sprocket 104. The pre-positioning stop 700 is used to coarsely position the axial position of the main drive. The pre-positioning stop 700 is made of non-hard materials such as nylon and the like, so that the step chain wheel 103 of the main drive is prevented from being damaged.

As shown in fig. 5, 6, and 7, the second assembly includes: two pairs of adjusting seats 800 with adjustable transverse and longitudinal positions in the same working plane, a positioning and clamping assembly 900 mounted on each adjusting seat 800, and two height positioning clamps 110 mounted on the base 300.

As shown in fig. 13, 14, and 15, two rails 803 are provided on the table 301 of the base, and each rail 803 extends in the main drive axis direction. The two rails 803 are slidably provided with two movable seats 801, each movable seat 801 is slidably matched with the two rails 803, and the sliding direction of the two movable seats 801 is parallel to the direction of the main driving axis.

The adjusting seats 800 belonging to the same pair are slidably mounted on the same moving seat 801, the sliding direction of the adjusting seat 800 is perpendicular to the direction of the main driving axis, and the moving seat 801 is provided with a screw mechanism for driving the adjusting seats 800 to be mutually close or far away and a locking screw 802 which is matched with the workbench 301 of the base in a propping way.

As shown in fig. 13 and 15, a lock screw 802 penetrates the movable base 801 and is screwed to the table 301, and the position of the movable base 801 is locked by the lock screw 802.

As shown in fig. 13, a dovetail groove is formed at the bottom of the adjusting seat 800, a guide block 804 extending into the dovetail groove is formed at the top of the moving seat 801, and the adjusting seat 800 slides along the guide block 804.

As shown in fig. 14, the rail 803 has a V-shaped cross section, a contact surface between the rail 803 and the movable seat 801 is provided with a roller row 806, and the movement resistance of the movable seat 801 is reduced by the roller row 806.

As shown in fig. 15, the pitch between the paired adjustment seats 800 is adjusted by a screw mechanism including: the screw rod 807, a hand wheel 805 fixing one end of the screw rod 807, and a transmission nut 808 fixed with the adjusting seat 800 and in threaded fit with the screw rod 807, wherein the two transmission nuts 808 are both T-shaped threads, and the thread directions are opposite.

A support plate 809 is fixed on the movable seat 801 adjacent to the hand wheel 805 through bolts, a rotating shaft of the hand wheel 805 penetrates through the support plate 809, a plane bearing 811, a seat ring 810 and a locking nut are sequentially sleeved on the rotating shaft of the hand wheel 805, and the seat ring 810 and the support plate 809 are respectively pressed against two sides of the plane bearing 811 through the locking nut.

The rotation shaft of the hand wheel 805 is fixedly connected with the screw rod 807, and the end of the screw rod 807 is rotatably connected with the adjusting seat 800 through a bearing. The screw rod 807 is driven to rotate by the hand wheel 805, and the two adjusting seats 800 are driven to be close to or far away from each other along the axial direction of the screw rod 807 by the transmission nut 808.

As shown in fig. 7, 17 and 18, the upper steering arm includes two side plates 201, each side plate 201 is U-shaped, and the positioning clamping assembly 900 on the adjusting seat 800 clamps opposite sides of the U-shaped side plate of a corresponding one of the upper steering arms.

As shown in fig. 18, the positioning and clamping assembly 900 includes: the positioning seat 901 fixed on the adjusting seat 800, the barb pin 902 movably installed on the positioning seat 901 for driving the side plate 201 of the upper steering arm to be close to the positioning seat 901, and the pressing plate 903 swingably installed on the positioning seat 901 for driving the track 203 of the upper steering arm to be close to the positioning seat 901.

As shown in fig. 6, 7 and 16, each adjusting seat 800 is provided with a positioning seat 901, each positioning seat 901 is provided with two barb pins 902, and the two barb pins 902 are arranged along the vertical direction.

As shown in fig. 19a and 19b, the barbed pin 902 has a baffle 906 at one end facing the side plate 201 and a handle 904 at the other end. The barb pin 902 is sleeved with a spring 908, and two ends of the spring 908 are respectively connected with the positioning seat 901 and the handle 904. The handle 904 is provided with a radially extending stop arm 907 and the positioning seat 901 is provided with a stop post 905 which is matched with the stop arm 907.

As shown in fig. 19c and 19d, the side plate 201 of the upper steering arm is provided with a bar-shaped hole 909, and the baffle 906 at one end of the barb pin 902 is rectangular, and the length of the rectangle is smaller than the length of the bar-shaped hole 909 and larger than the width of the bar-shaped hole 909.

In use, the barb pin 902 is pushed by the handle 904, the length direction of the baffle 906 is consistent with the length direction of the bar hole 909, after the baffle 906 passes through the bar hole 909, the handle 904 is rotated, the length direction of the baffle 906 is perpendicular to the length direction of the bar hole 909, the position relationship between the baffle 906 and the bar hole 909 is as shown in fig. 19c, the position relationship between the baffle arm 907 and the baffle post 905 is as shown in fig. 19d, and the rotary reset of the handle 904 is prevented by the baffle post 905. The side plate is driven against the positioning seat 901 by the baffle 906 under the elastic force of the spring 908.

As shown in fig. 7, a pressing plate 903 is disposed on each positioning seat 901, and as shown in fig. 20a and 20b, the positioning seat is fixed with a support 910, and the pressing plate 903 is rotatably connected to the support 910 through a pin shaft 911. The two sides of the hinge part of the pressing plate 903 are respectively provided with a spring 915 and a push rod 912, a guide pin 914 is arranged in the spring 915, and the height of the guide pin 914 simultaneously limits the swing limit position of the pressing plate 903.

A handle 913 is provided for driving the push rod 912 to move telescopically, the handle 913 is at the solid line position, the push rod 912 pushes the pressing plate 903, the pressing plate 903 presses the rail 203, the handle 913 is at the broken line position, and the pressing plate 903 releases the rail 203 under the action of the spring 915.

As shown in fig. 20b, the positioning seat 901 is provided with a base plate 916 and a cushion block 917 to cooperate with the pressing plate 903 to clamp the rail 203, so as to ensure that the opening distance of the U-shaped rail 203 is unchanged, which is beneficial to subsequent assembly. The shim plate 916 is machined to ensure accuracy of clamping of the rail 203 by adjusting the size of the shim 917.

As shown in fig. 17, each positioning seat 901 is provided with a pad 918 and a pad 919, wherein the pad 918 is machined, and the pad 919 is guaranteed to be abutted against the outer side of the tangential guide rail 204 by adjusting the size of the pad 919.

As shown in fig. 7 and 17, each of the moving seats 801 is provided with a height positioning clamp 110, and each of the height positioning clamps 110 is engaged with one of the side plates 201 of the upper steering arm. As shown in fig. 17, each of the height positioning clamps 110 includes: a supporting rod 111 with adjustable height and a pressing plate 112 matched with the top end of the supporting rod 111 and used for clamping the upper rail 203 of the side plate. The height of the upper steering arm is positioned by the height of the strut and the rail 203 is pressed and positioned by the pressing plate.

As shown in fig. 6, the opposite sides of each movable seat are also provided with a normal centering assembly 120, respectively, and the normal centering assembly 120 is used to check the normal point position of the tangential guide rail on the side plate 201 of the upper steering arm.

As shown in fig. 6 and 21, the normal centering assembly 120 includes a vertical rod 121 fixed to a moving seat 801, and a marking block 122 slidably mounted on the top of the vertical rod 121. The top of the upright 121 is provided with a horizontally extending guide slot in which the marking block 122 is slidably mounted. The cross section of the guide groove is rectangular, and the cross section of the matching part of the mark block and the guide groove is also rectangular, so that the rotation of the mark block in the sliding process is prevented.

The upright 121 is fixed to the side of the table through a support 123, and the bottom of the upright 121 penetrates the support 123 and is fixed in position through a lock nut 124.

As shown in fig. 6, in the two sets of normal centering components 120 on the same moving base 801, each marker block respectively detects the normal point position of one tangential guide rail 204. After the tangential guide 204 of the upper steering arm is mounted, the marker block 122 is moved so that the normal line on the marker block 122 is flush with the normal line point of the tangential guide, and whether the tangential guide is properly positioned is detected.

The use process of the preassembly tool provided by the invention is as follows:

the working steps are as follows: the moving seats 801 are close to each other, and the adjusting seats 800 belonging to the same pair are far away from each other, so that the fixture is in a standby state.

Working steps are as follows: the two side plates 201 of the upper steering arm are put into the fixture, the bottoms of the tracks 203 on the side plates 201 are abutted against the height positioning clamp 110 to determine the height of the upper steering arm, the side plates 201 are pressed against the positioning seat 901 by the inverted hook pin 902, the spacing between the adjusting seats 800 belonging to the same pair is adjusted by the screw mechanism, the track spacing on the U-shaped side plates meets the requirement, and the tracks 203 are pressed against the positioning seat 901 by the pressing plate 903.

And a working step III: tangential guide rails 204 on the two side plates 201 are assembled.

And a working step four: the main drive is hung into the fixture, the step chain wheel 103 is aligned to the positioning assembly 600 through preliminary positioning of the pre-positioning stop block 700, the hand wheel 501 of the top shaft assembly 500 is rotated, and the axial position of the main drive is adjusted.

Working steps are as follows: the distance between the two moving seats 801 is adjusted so that the two moving seats 801 are respectively close to the corresponding main driving step chain wheel 103, and the positions of the moving seats 801 are locked.

Working steps are as follows: the opening width of the U-shaped side plate 201 is fixed by the opening connecting beam 205, and the two side plates 201 are fixed by the connecting beam.

Working steps are as follows: the main drive and upper steering arms are connected together with pads and bolts.

Working steps are as follows: and (5) stirring a mark block in the normal alignment assembly, and checking the normal point position of the tangential guide rail.

And a working step nine: the positioning clamp assembly 900 and the height positioning clamp 110 are released and the adjustment block 800 and the traveling block 801 return to the original positions.

And a working step of: and (3) lifting the main drive and the upper steering arm away from the tool by using a lifting appliance, and starting a new working cycle.

The foregoing detailed description of the preferred embodiment is provided for the purpose of illustration only and is not to be construed as limiting the invention in any way, as long as further modifications and similar or equivalent arrangements are made in the light of the invention.

Claims

1. The utility model provides a public transit formula automatic escalator upper portion steering arm and main drive's preassembly frock, includes the base, its characterized in that is equipped with on the base and bears the first subassembly of location main drive to and bear the second subassembly of location upper portion steering arm, this second subassembly includes:

two height positioning clamps mounted on the base, each height positioning clamp being matched with one of the side plates of the upper steering arm;

the first assembly includes:

a bearing buffer component supported below the main shaft in the main drive;

the positioning assembly is matched with the tooth slot of the step chain wheel in the main drive;

the load bearing cushion assembly includes:

the sliding rod is inserted into the guide cylinder in a sliding way;

a spring positioned in the guide cylinder and propped between the slide bar and the bottom of the guide cylinder;

the top shaft assembly includes:

a top seat fixed on the base;

the hand wheel is connected with the force application end of the screw rod;

the positioning assemblies are provided with two sets of step chain wheels which respectively correspond to the main drive, and each set of positioning assembly comprises a supporting seat fixed on the base and two supporting rollers rotatably arranged on the supporting seat;

2. The pre-assembly fixture for an upper steering arm and a main drive of a bus escalator as set forth in claim 1, wherein said first assembly further comprises: and the pre-positioning stop block is matched with the axial end face of the step chain wheel of the main drive, and is fixed on the base through a stop seat.

3. The preassembly fixture for the upper steering arm and the main drive of the bus type escalator according to claim 1, wherein the base is provided with two movable seats, each movable seat is slidably arranged on the base, and the sliding direction of each movable seat is parallel to the axis direction of the main drive;

4. A pre-assembly fixture for an upper steering arm and a main drive of a bus escalator as claimed in claim 3, wherein the base is provided with two rails, each movable seat is slidably mounted on a corresponding rail, and the movable seat is further provided with a locking screw rod in a penetrating manner and matched with the base in a propping manner.

5. A pre-assembly fixture for an upper steering arm and a main drive of a bus escalator as claimed in claim 3, wherein each of the opposite sides of each moving seat is further provided with a normal centering assembly, the normal centering assembly comprising a vertical rod fixed to the moving seat and a flag block slidably mounted on top of the vertical rod;

6. The pre-assembly fixture for an upper steering arm and a main drive of a bus escalator as set forth in claim 1, wherein said positioning and clamping assembly comprises:

the positioning seat is fixed on the adjusting seat;