CN110356455B

CN110356455B - Automatic bent axle transfer car (buggy) of going up and down

Info

Publication number: CN110356455B
Application number: CN201910701959.0A
Authority: CN
Inventors: 朱洪磊; 尧琼林; 李加彬; 朱锦; 张劲松; 黄涛
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2021-10-12
Anticipated expiration: 2039-07-31
Also published as: CN110356455A

Abstract

The invention relates to an automatic lifting crankshaft transfer trolley, which comprises a rack, a lifting frame, a crankshaft support plate and a driving device, wherein the lifting frame is arranged on the rack; the frame comprises a frame body and a baffle; the frame body comprises a base and a guide post, and a side supporting plate is arranged at the edge of the base; the baffle comprises a baffle frame and a guide strip, and a first pulley is arranged on the baffle frame; the lifting frame is in sliding fit with the guide post; the driving device comprises a movable pulley assembly, a fixed pulley assembly, a limiting plate assembly, a spring and a steel rope, which are fixed on the base; the movable pulley assembly comprises a movable pulley, the fixed pulley assembly comprises a fixed pulley, and the limiting plate assembly comprises a limiting plate and a second pulley; spring one end is connected on the collateral branch backup pad, the other end is connected on the movable pulley, and movable pulley, fixed pulley, second pulley and first pulley are walked around to the steel cable, and steel cable one end is fixed on the limiting plate, and the other end is fixed on the crane. The invention enables the crankshaft to float at a certain height all the time, avoids operators from bending down and lightens the labor intensity.

Description

Automatic bent axle transfer car (buggy) of going up and down

Technical Field

The invention relates to crankshaft transportation, in particular to an automatic lifting crankshaft transfer trolley.

Background

The crankshaft is required to be stored in a material area after being manufactured, the crankshaft is required to be transferred to an assembly station of an engine assembly line from the material area during assembly, a transfer trolley is generally adopted to transfer the crankshaft in order to reduce labor intensity, and the crankshaft is directly taken out of the transfer trolley during assembly. The crankshafts are placed on the transfer trolley in a layered mode, and need to be stood when the crankshafts with lower positions are taken, so that the labor intensity is increased, occupational health hazards exist, the production efficiency is reduced, and the manufacturing cost is increased.

CN102582671A has announced a bent axle turnover vehicle, and it is equipped with bottom plate and wheel group, the welding has four stands and frames on the bottom plate, is equipped with two direction connecting rods from top to bottom between two front columns and between two back stands respectively, is connected with two spacing frids respectively on two direction connecting rods of front side and on two direction connecting rods of rear side perpendicularly, bottom bearing plate and a plurality of intermediate bearing baffle are installed to preceding spacing frid and back spacing frid one deck in proper order. The V-shaped grooves on the upper end surface of the lower middle supporting clapboard and the V-shaped grooves on the lower end surface of the upper middle supporting clapboard are oppositely arranged, and the V-shaped grooves on the lower end surface and the V-shaped grooves on the upper end surface of the same middle supporting clapboard are alternately arranged in a staggered way. When the crankshaft support is used, the crankshafts and the middle supporting partition plates are sequentially arranged layer by layer, and the crankshafts are arranged layer by layer in a staggered mode, so that the space can be fully utilized, and a large number of crankshafts can be arranged.

CN206826696U discloses a simple crankshaft transfer trolley, which includes a lower support base plate, rail type side positioning plates mounted on two end sides of the lower support base plate, and an upper support base plate mounted on the top of the rail type side positioning plates; the lower supporting base plate, the rail type side positioning plate and the upper supporting base plate are quickly connected through hinges; the middle part of the rail type side positioning plate is provided with a rail groove. The utility model discloses a through design dedicated spacing and assembly devices, carry out quick fixed and assembly to the bent axle, satisfy the batch assembly demand to promote bent axle and transport efficiency, solve the bent axle and transport efficiency and lead to the problem that production efficiency is low.

However, the two patents cannot solve the problems that the labor intensity is increased and the efficiency is reduced when the crankshaft with a lower position is taken.

Disclosure of Invention

The invention aims to provide an automatic lifting crankshaft transfer trolley, which enables a crankshaft to float at a certain height all the time, avoids operators from bending, lightens labor intensity, improves production efficiency and saves manufacturing cost.

In order to achieve the technical purpose, the invention adopts the following scheme:

an automatic lifting crankshaft transfer trolley comprises a rack, a lifting frame arranged on the rack, a crankshaft support plate and a driving device;

the rack comprises a rack body and a baffle plate; the rack body comprises a base and a guide post arranged on the base, and a side supporting plate is arranged at the edge of the base; the baffle comprises a baffle frame and a guide strip arranged on the baffle frame, a first pulley assembly is arranged on the baffle frame, and the first pulley assembly comprises a first pulley;

the lifting frame is in sliding fit with the guide post, the baffle plate frame is fixed on the bottom plate, the crankshaft support plate is in sliding fit with the guide bar, and the lower end of the crankshaft support plate is tightly abutted to the upper surface of the lifting frame;

the driving device comprises a movable pulley assembly, a fixed pulley assembly and a limiting plate assembly which are fixed on the base, and further comprises a spring and a steel rope; the movable pulley assembly comprises a movable pulley, the fixed pulley assembly comprises a fixed pulley, and the limiting plate assembly comprises a limiting plate arranged on the base and a second pulley arranged on the limiting plate; one end of the spring is connected to the side supporting plate, the other end of the spring is connected to the movable pulley, the steel rope bypasses the movable pulley, the fixed pulley, the second pulley and the first pulley, one end of the steel rope is fixed to the limiting plate, and the other end of the steel rope is fixed to the lifting frame.

The movable pulley assembly further comprises a sliding rail arranged on the base and a sliding block in matched connection with the sliding groove, the sliding rail is provided with the sliding groove, the sliding block and the sliding groove are matched through a dovetail, the movable pulley is positioned and arranged on the sliding block through a first positioning pin, and a first limiting sleeve for preventing the movable pulley from falling off is arranged on the first positioning pin; and a first lifting hook is arranged on the movable pulley.

The fixed pulley assembly further comprises a fixed block installed on the base, the fixed pulley is installed on the fixed block through a second locating pin in a locating mode, and a second limiting sleeve used for preventing the fixed pulley from falling off is installed on the second locating pin.

The number of the movable pulley blocks and the number of the springs are four, the number of the fixed pulley blocks is two, the number of the steel ropes is two, the two steel ropes are respectively connected to two sides of the lifting frame, and each steel rope bypasses two movable pulleys and one fixed pulley.

The first pulley assembly includes a pulley support having a mounting groove and a first pulley rotatably mounted on the pulley support, the pulley support being mounted on the upper surface of the barrier frame.

The guide post is installed in the guide post mounting hole, and the guide post is fixed on the base through the guide post supporting plate.

A second lifting hook used for connecting a steel rope is welded on the limiting plate; the welding has the third lifting hook that is used for connecting the steel cable on the crane, the spring has the spring hook, the spring hook is connected with the first lifting hook of movable pulley.

The side of collateral branch backup pad has the limiting plate mounting hole, the limiting plate is "L" type, the side of limiting plate has the cylinder arch, the second pulley cover is established on the cylinder arch, the lower extreme welding of limiting plate is on the base, the cylinder arch is connected with the limiting plate mounting hole cooperation.

The base, the baffle frame and the lifting frame are square pipe welding pieces.

The bent axle backup pad includes first backup pad and places the second backup pad at first backup pad upper edge, the semicircular notch that is used for placing the bent axle is offered to the top edge of first backup pad, the semicircular notch that is used for placing the bent axle is all offered to the top edge and the lower limb of second backup pad.

The invention has the beneficial effects that:

the lifting frame can slide along the guide post, the crankshaft support plate can slide along the guide strip, and the spring can apply acting force to the movable pulley to enable the sliding block to slide so as to drive the steel rope to move, and the steel rope drives the lifting frame to move until the pulling force provided by the steel rope is balanced with the total weight force on the lifting frame; therefore, when the number of crankshafts is large, the lifting frame descends, so that the crankshaft storage device can store more crankshafts; after the upper crankshaft is taken out, the lifting frame rises along with the steel rope under the elastic force of the spring, so that the position of the crankshaft is lifted, the labor intensity for taking the crankshaft is reduced, and the production efficiency is improved; (2) the movement track of the movable pulley is limited by the sliding chute, so that the movable pulley can move stably, the phenomenon that the movement of the steel rope is influenced due to the out-of-control (such as overturning or inclining) of the movable pulley is avoided, and the consistency of the movement distance of the lifting frame each time is ensured; (3) because two steel ropes are adopted, the stress stability of the lifting frame can be ensured, and the lifting frame can move stably; (4) because each steel rope passes through the two movable pulleys, the movable pulleys move by one length unit, and the lifting frame can move by four length units, the moving distance of the lifting frame is large enough, and the effect of reducing the labor intensity is achieved; (5) the second pulley is positioned at the position where the direction of the steel rope changes and is easy to damage, and the position can be ensured to have enough strength by the matched connection mode of the cylindrical protrusion and the mounting hole of the limiting plate; (6) the lower limb of first backup pad does not have the breach can guarantee that it is steady to be promoted by the crane, and the lower limb all has semi-circular breach can guarantee to deposit the space of bent axle about the second backup pad to can make the bent axle just pass through, avoid the breach too big to lead to the bent axle to rock and lead to the scotch.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the gantry;

FIG. 3 is a schematic structural view of a housing body;

FIG. 4 is a schematic view of the structure of the base;

FIG. 5 is a schematic view of the construction of the guide post support plate;

FIG. 6 is a schematic view of the structure of the baffle;

FIG. 7 is a schematic structural view of a pulley support;

FIG. 8 is a schematic view of the structure of the driving device mounted on the frame body;

FIG. 9 is a schematic view of the construction of the movable sheave assembly;

FIG. 10 is a schematic structural view of a slide rail;

FIG. 11 is a schematic structural view of the fixed sheave assembly;

FIG. 12 is a schematic view of a restrictor plate assembly;

figure 13 is a schematic structural view of the crane;

FIG. 14 is a schematic structural view of a crankshaft support plate;

fig. 15 is a schematic structural view of a first support plate;

FIG. 16 is a schematic view of the construction of the second support plate;

FIG. 17 is a schematic view of the present invention in a configuration filled with crankshafts;

FIG. 18 is a schematic view of the present invention in a configuration with a four-layer crankshaft;

FIG. 19 is a schematic view of the present invention in a three-layer crankshaft configuration;

FIG. 20 is a schematic view of the present invention in a two-layer crankshaft configuration;

FIG. 21 is a schematic view of the present invention in the configuration of a one-layer crankshaft.

In the figure:

1-a frame;

2-a rack body, 21-a base, 22-a guide column, 23-a guide column support plate, 24-a side support plate, 25-a guide column mounting hole and 26-a limiting plate mounting hole;

3-baffle, 31-baffle frame, 32-guide bar, 34-first pulley assembly, 35-pulley support, 36-first pulley;

41-spring, 42-steel rope, 43-spring hook;

5-movable pulley component, 51-sliding groove, 52-sliding rail, 53-sliding block, 54-movable pulley, 55-first positioning pin, 56-first limiting sleeve and 57-first hook;

6-fixed pulley component, 61-fixed block, 62-fixed pulley, 63-second positioning pin, 64-second limiting sleeve;

7-a limiting plate assembly, 71-a limiting plate, 72-a second pulley, 73-a second hook, 74-a cylindrical protrusion;

8-a lifting frame, 81-a third lifting hook;

9-crankshaft support plate, 91-first support plate, 92-second support plate.

Detailed Description

The technical solution of the present invention is further explained with reference to the drawings and the embodiments.

Referring to fig. 1, an automatic lifting crankshaft transfer trolley comprises a frame 1, a driving device arranged on the frame, a lifting frame 8 and a crankshaft support plate 9;

referring to fig. 2, the frame 1 includes a frame body 2 and a baffle 3;

referring to fig. 3 and 4, the rack body 2 includes a base 21, and a guide post 22 mounted on the base 21, wherein the edge of the base 21 has a side support plate 24;

referring to fig. 6, the baffle 3 includes a baffle frame 31 and a guide bar 32 mounted on the baffle frame 31, a first pulley assembly 34 is mounted on the baffle frame 31, and the first pulley assembly 34 includes a first pulley 36;

referring to fig. 1, the lifting frame 8 is in sliding fit with the guide post 22, the baffle frame 31 is fixed on the bottom plate 21, the crankshaft support plate 9 is in sliding fit with the guide bar 32, and the lower end of the crankshaft support plate is tightly abutted to the upper surface of the lifting frame 8;

referring to fig. 8, the driving device includes a movable pulley assembly 5, a fixed pulley assembly 6, a limiting plate assembly 7 fixed on the base 21, a spring 41 and a steel cable 42; the movable pulley assembly 5 comprises a movable pulley 54, the fixed pulley assembly 6 comprises a fixed pulley 62, and the limit plate assembly 7 comprises a limit plate 71 arranged on the base 21 and a second pulley 72 arranged on the limit plate 71; one end of the spring 41 is connected to the side supporting plate 24, the other end of the spring is connected to the movable pulley 54, the steel cable 42 bypasses the movable pulley 54, the fixed pulley 62, the second pulley 72 and the first pulley 36, one end of the steel cable 42 is fixed to the limiting plate 71, and the other end of the steel cable 42 is fixed to the crane 8.

Referring to fig. 9 and 10, the movable pulley assembly 5 further includes a slide rail 52 mounted on the base 21, and a slide block 53 in fit connection with the slide groove 51, the slide rail 52 has the slide groove 51, the slide block 53 and the slide groove 51 are in dovetail fit, the movable pulley 54 is positioned and mounted on the slide block 53 through a first positioning pin 55, and a first stop collar 56 for preventing the movable pulley 54 from falling off is mounted on the first positioning pin 55; a first hook 57 is mounted on the movable pulley 54.

Referring to fig. 11, the fixed pulley assembly 6 further includes a fixed block 61 mounted on the base 21, the fixed pulley 62 is positioned and mounted on the fixed block 61 by a second positioning pin 63, and a second limiting sleeve 64 for preventing the fixed pulley 62 from falling off is mounted on the second positioning pin 63.

Referring to fig. 8, the number of the movable pulley block 5 and the number of the spring 41 are four, the number of the fixed pulley block 6 is two, the number of the steel cables 42 is two, the two steel cables 42 are respectively connected to two sides of the crane 8, and each steel cable 42 passes around two movable pulleys 54 and one fixed pulley 62.

The first pulley assembly 34 includes a pulley support 35 having a mounting groove, the pulley support 35 being mounted on the upper surface of the barrier frame 31, and a first pulley 36 rotatably mounted on the pulley support 35, and the structure of the pulley support 35 is shown in fig. 7.

The structure of the guide post support plate 23 is shown in fig. 5, the guide post 22 is installed in the guide post installation hole 25, and the guide post 22 is fixed on the base 21 through the guide post support plate 23.

Referring to fig. 12, the second hook 73 for connecting the steel rope 42 is welded to the limit plate 71; referring to fig. 13, the crane 8 is welded with a third hook 81 for connecting the steel rope 42; the spring 41 has a spring hook 43, and the spring hook 43 is connected to a first hook 57 of the movable sheave 54.

Limiting plate mounting holes 26 are formed in the side faces of the side supporting plates 24, referring to fig. 12, the limiting plate 71 is of an L shape, cylindrical protrusions 74 are formed in the side faces of the limiting plate 71, the second pulley 72 is sleeved on the cylindrical protrusions 74, the lower end of the limiting plate 71 is welded on the base, and the cylindrical protrusions 74 are connected with the limiting plate mounting holes 26 in a matched mode.

The base 21, the baffle plate frame 31 and the lifting frame 8 are square pipe welding pieces.

Referring to fig. 14, 15 and 16, the crankshaft support plate 9 includes a first support plate 91 and a second support plate 92 disposed on an upper edge of the first support plate 91, a semicircular notch for placing a crankshaft is disposed on an upper edge of the first support plate 91, and semicircular notches for placing crankshafts are disposed on an upper edge and a lower edge of the second support plate 92.

When the crankshaft transfer trolley is used, the crankshaft placing and taking method is the same as that of the existing transfer trolley, the crankshaft is placed on the notch of the crankshaft support plate 9, and the number of the second support plates 92 can be increased to increase the number of the crankshaft placing layers.

In the invention, as the lifting frame 8 can slide along the guide post 22, the crankshaft support plate 9 can slide along the guide strip 32, the spring 41 can apply acting force to the movable pulley 54, so that the sliding block 53 slides, the steel rope 42 is driven to move, and the steel rope 42 drives the lifting frame 8 to move until the pulling force provided by the steel rope 42 is balanced with the total weight force on the lifting frame 8. Therefore, when the number of crankshafts is large, the lifting frame 8 descends, so that the crankshaft storage device can store more crankshafts; after the crankshaft on the upper layer is taken out, the lifting frame 8 rises along with the steel rope 42 under the elastic force of the spring 41, so that the position of the crankshaft is lifted, the labor intensity for taking the crankshaft is reduced, and the production efficiency is improved. Likewise, when a crankshaft is placed on the present invention, it will not bow due to the placed position being too low.

The structural change of the invention in the using process is shown in fig. 17, 18, 19, 20, 21 and 1.

Because the motion trail of the movable pulley 54 is limited by the chute 51, the movable pulley 54 moves stably, the phenomenon that the movement of the steel rope 51 is influenced by the out-of-control (such as overturning or inclining) of the movable pulley 54 is avoided, and the consistency of the motion distance of the lifting frame 8 every time is ensured.

The two steel ropes 42 can ensure the stress stability of the lifting frame 8, so that the lifting frame can move stably. After each steel rope passes through the two movable pulleys 54, the movable pulleys 54 move by one length unit, and the lifting frame 8 can move by four length units, so that the moving distance of the lifting frame 8 is large enough, and the effect of reducing the labor intensity is achieved.

The spring hook and the lifting hook are convenient to disassemble and assemble.

The second pulley 72 is located at the position where the direction of the steel rope changes and is easy to damage, and the cylindrical protrusion 74 is connected with the mounting hole 26 of the limiting plate in a matching way, so that the position has enough strength.

The square tube welding part has low cost, light weight and high strength.

The lower limb of first backup pad 91 does not have the breach can guarantee that it is steady to be promoted by crane 8, and the lower limb all has semi-circular breach can guarantee to deposit the space of bent axle on the second backup pad 92 to can make the bent axle just pass through, avoid the breach too big to lead to the bent axle to rock and lead to the scotch.

The following data demonstrate the possibilities of the invention:

when the crankshaft transfer trolley is fully loaded, five layers of crankshafts are calculated, the total weight of the crankshafts (including crankshaft support plates, without considering the gravity and the friction force of a lifting plate) is G, the tensile force of each steel rope is 1/2G, and the elastic force F of each spring is G;

the height of the first supporting plate and the height of the second supporting plate are both h, the total height of the crankshaft supporting plate is 5h, springs with the elastic coefficients k being G/h are selected, and the deformation x of each spring is G/k being h;

in an initial state, namely when the first layer of crankshafts are taken, the total weight of the crankshafts is G, the deformation amount of the spring is h, and the height of the lifting frame is assumed to be-5 h and the height of the crankshafts is 0;

when the first layer of crankshafts are taken out, the total weight of the crankshafts is 4/5G, the deformation amount of the spring is 4/5h, the lifting frame rises 4/5h, and the heights of the crankshafts are 4/5 h;

when the second layer of crankshafts are taken, the height of the crankshafts is-1/5 h;

when the second layer of crankshafts are taken out, the total weight of the crankshafts is 3/5G, the deformation amount of the spring is 3/5h, the lifting frame rises 4/5h, and the heights of the crankshafts are 3/5 h;

from this the following table can be calculated (height of crankshaft refers to fig. 17, 18, 19, 20, 21, 1):

as can be seen from the above table, the height of the crankshaft at the uppermost layer fluctuates between-4/5 h and 4/5 h. In contrast, if the lifting frame does not move, the height of the crankshaft at the uppermost layer fluctuates between 0 and 4 hours. Therefore, the crankshaft taking device can greatly reduce the motion amplitude when the crankshaft is taken, so that the labor intensity is reduced, and the production efficiency is improved.

Claims

1. An automatic lifting crankshaft transfer trolley comprises a rack (1), and is characterized by also comprising a lifting frame (8), a crankshaft support plate (9) and a driving device, wherein the lifting frame is arranged on the rack;

the rack (1) comprises a rack body (2) and a baffle (3); the rack body (2) comprises a base (21) and a guide column (22) arranged on the base (21), wherein the edge of the base (21) is provided with a side supporting plate (24); the baffle (3) comprises a baffle frame (31) and a guide strip (32) arranged on the baffle frame (31), a first pulley assembly (34) is arranged on the baffle frame (31), and the first pulley assembly (34) comprises a first pulley (36);

the lifting frame (8) is in sliding fit with the guide post (22), the baffle plate frame (31) is fixed on the bottom plate (21), the crankshaft support plate (9) is in sliding fit with the guide strip (32), and the lower end of the crankshaft support plate is tightly abutted to the upper surface of the lifting frame (8);

the driving device comprises a movable pulley assembly (5), a fixed pulley assembly (6) and a limiting plate assembly (7) which are fixed on a base (21), and further comprises a spring (41) and a steel rope (42); the movable pulley assembly (5) comprises a movable pulley (54), the fixed pulley assembly (6) comprises a fixed pulley (62), and the limiting plate assembly (7) comprises a limiting plate (71) arranged on the base (21) and a second pulley (72) arranged on the limiting plate (71); spring (41) one end is connected on collateral branch fagging (24), the other end is connected on movable pulley (54), fixed pulley (62), second pulley (72) and first pulley (36) are walked around in steel cable (42), steel cable (42) one end is fixed on limiting plate (71), the other end is fixed on crane (8).

2. The crankshaft transfer car (buggy) of claim 1, wherein: the movable pulley assembly (5) further comprises a sliding rail (52) arranged on the base (21) and a sliding block (53) connected with the sliding groove (51) in a matched mode, the sliding rail (52) is provided with the sliding groove (51), the sliding block (53) and the sliding groove (51) are matched through a dovetail, the movable pulley (54) is positioned and arranged on the sliding block (53) through a first positioning pin (55), and a first limiting sleeve (56) used for preventing the movable pulley (54) from falling off is arranged on the first positioning pin (55); and a first lifting hook (57) is arranged on the movable pulley (54).

3. The crankshaft transfer car (buggy) of claim 1, wherein: fixed pulley assembly (6) are still including installing fixed block (61) on base (21), fixed pulley (62) are installed at fixed block (61) through second locating pin (63) location, install second stop collar (64) that are used for preventing fixed pulley (62) to drop on second locating pin (63).

4. A crankshaft transfer car (buggy) according to claim 1 or 2 or 3, characterized in that: the number of the movable pulley assemblies (5) and the number of the springs (41) are four, the number of the fixed pulley assemblies (6) is two, the number of the steel ropes (42) is two, the two steel ropes (42) are respectively connected to two sides of the lifting frame (8), and each steel rope (42) bypasses two movable pulleys (54) and one fixed pulley (62).

5. The crankshaft transfer car (buggy) of claim 4, wherein: the first pulley assembly (34) comprises a pulley support member (35) with a mounting groove and a first pulley (36) rotatably mounted on the pulley support member (35), and the pulley support member (35) is mounted on the upper surface of the baffle frame (31).

6. The crankshaft transfer car (buggy) of claim 4, wherein: the guide post structure is characterized by further comprising a guide post supporting plate (23) with a guide post mounting hole (25), the guide post (22) is mounted in the guide post mounting hole (25), and the guide post (22) is fixed on the base (21) through the guide post supporting plate (23).

7. The crankshaft transfer car (buggy) of claim 4, wherein: a second lifting hook (73) for connecting a steel rope (42) is welded on the limiting plate (71); the crane (8) is welded with a third lifting hook (81) used for connecting a steel rope (42), the spring (41) is provided with a spring hook (43), and the spring hook (43) is connected with a first lifting hook (57) of the movable pulley (54).

8. The crankshaft transfer car (buggy) of claim 4, wherein: the side of collateral branch fagging (24) has limiting plate mounting hole (26), limiting plate (71) are "L" type, the side of limiting plate (71) has cylindrical protrusion (74), second pulley (72) cover is established on cylindrical protrusion (74), the lower extreme welding of limiting plate (71) is on the base, cylindrical protrusion (74) and limiting plate mounting hole (26) cooperation are connected.

9. The crankshaft transfer car (buggy) of claim 4, wherein: the base (21), the baffle plate frame (31) and the lifting frame (8) are square pipe welding pieces.

10. The crankshaft transfer car (buggy) of claim 4, wherein: bent axle backup pad (9) include first backup pad (91) and place second backup pad (92) at first backup pad (91) upper edge, the semicircular notch that is used for placing the bent axle is offered to the upper edge of first backup pad (91), the semicircular notch that is used for placing the bent axle is all offered to the upper edge and the lower limb of second backup pad (92).