CN213164942U

CN213164942U - 90-degree grooved pulley overturning machine

Info

Publication number: CN213164942U
Application number: CN202020758395.2U
Authority: CN
Inventors: 郑雄飞; 胡雪; 买春亮; 吴云
Original assignee: Shihezi University
Current assignee: Shihezi University
Priority date: 2020-05-10
Filing date: 2020-05-10
Publication date: 2021-05-11
Anticipated expiration: 2030-05-10

Abstract

The utility model belongs to a turnover mechanical device, in particular to a 90-degree sheave turnover mechanism for turning over heavy objects, wherein a mechanism main body comprises a frame, a turnover system and a transmission system; the rack comprises a motor rack and a turnover machine rack, and the motor rack is fixedly connected with the motor and used for supporting and fixing the motor; the turnover machine rack is fixedly connected with the turnover system and used for supporting and fixing the turnover mechanism; the motor is matched with the speed reducer to reduce the rotating speed and transmit power to the intermittent transmission mechanism, the horizontal clamping device clamps the workpiece, and the intermittent transmission mechanism in the turnover system is matched with the horizontal clamping device to turn the workpiece by 90 degrees.

Description

90-degree grooved pulley overturning machine

Technical Field

The utility model belongs to the technical field of engineering machine tool and specifically relates to a 90 degree sheave upset machine is related to.

Background

In the manufacturing of engineering machinery, the production efficiency of an automatic production line determines great economic benefit. In many production lines, the machining requirement is that the workpiece be turned over to facilitate the installation of the parts. In order to secure the mounting quality of the mounting member, it is necessary to vigorously develop a corresponding mounting apparatus capable of improving the production efficiency and the production quality. During the installation and machining process of parts, some workpieces need to be turned over by 90 degrees. The common method is to lift the workpiece by a crane, lift one end of the workpiece, move the workpiece and then put down the workpiece to turn the workpiece. For large structures, this operation is quite dangerous and is also limited by the hoisting height of the crane. The other method is to hang the turnover machine for turnover, but the method has the defects of large workpiece rotation radius, high clamping position and poor operation safety. In addition, the turning-over is performed like turning over a book, and the turning-over in the book turning-over mode occupies a very large space although the operation position is low. If the workpiece is firstly clamped in a low position, then the workpiece is lifted to a certain height and then turned over, and then the workpiece is descended and disassembled after the workpiece is completed, the production efficiency is low, and the manufacturing cost of the equipment is high. Statistics shows that the potential safety hazard of turning over of the large structural part generally exists in the field of engineering machinery manufacturing. The invention aims to solve the technical problems in the prior art, designs the part turnover mechanism, is suitable for turnover of small and medium-sized workpieces, and is safe, reliable and simple to operate in the using and operating process.

Disclosure of Invention

An object of the utility model is to provide a 90 degrees sheave upset machine to what the current existing upset machine equipment that provides in solving above-mentioned technical background exists requires highly to operational environment, and the cost is expensive, and it is great to strike when starting and stopping, often damages parts and fixes a position shortcoming such as inaccurate. The 90-degree grooved pulley overturning machine is simple in structure, accurate in positioning and stable in movement during starting and stopping, can accurately and stably work under various working environments, is low in manufacturing cost, and is less in damage to parts.

In order to achieve the above purpose, the utility model adopts the following scheme: the utility model provides a 90 degree sheave upset machine, including frame, upset system, transmission system. The frame includes motor rack and upset machine rack, motor rack and motor fixed connection, support and fixed motor. The turnover machine rack is fixedly connected with the turnover system and used for supporting and fixing the turnover mechanism. The motor is matched with the speed reducer to reduce the rotating speed and transmit power to the intermittent transmission mechanism, the horizontal clamping device clamps the workpiece, and the intermittent transmission mechanism in the turnover system is matched with the horizontal clamping device to turn the workpiece by 90 degrees.

Further, in the frame, including motor rack and upset machine rack, in the motor rack, the motor board welding machine is on the rack, and the motor passes through the bolt and installs on the motor board, and the reduction gear board also welds on the rack, and the reduction gear passes through the bolt and installs on the reduction gear board. In the upset machine rack, part platform supporting baseplate passes through the bolt and the nut is connected on upset machine rack bottom plate, and 4 part platform support columns pass through the screw connection on part platform supporting baseplate, and the welding of upper and lower stopper is on 4 part platform support columns, erects a both sides through hexagon socket head cap screw fixed mounting on the upset machine rack, and whole horizontal clamping device links firmly on erecting the frame.

Further, the turnover system comprises an intermittent transmission mechanism and a horizontal clamping device. In the intermittent transmission mechanism, a dial shaft is connected with a power output shaft of a speed reducer in a transmission system through an LX2 coupler B, and the dial shaft is a power input shaft of a turnover system. Two ends of the dial plate shaft are arranged in a left conical roller bearing A and a right conical roller bearing A, the left conical roller bearing A and the right conical roller bearing A are arranged in a left bearing hole A and a right bearing hole A of the intermittent transmission mechanism shell, the outer end of the right conical roller bearing A is positioned and sealed by a transparent cover A, and the outer end of the left conical roller bearing A is positioned and sealed by a bearing end cover A. The driver plate and the driver plate shaft are an integral body, and the driver plate is matched with the grooved wheel and drives the grooved wheel. The grooved pulley and the grooved pulley shaft are integrated, the left end and the right end of the grooved pulley shaft are respectively arranged in a left conical roller bearing B and a right conical roller bearing B, the left conical roller bearing B and the right conical roller bearing B are respectively arranged in a left bearing hole and a right bearing hole B of an intermittent transmission mechanism shell, the right end of the grooved pulley shaft is positioned and sealed by a bearing end cover B, the left end of the grooved pulley shaft is positioned and sealed by a transparent cover B, and the right end of the grooved pulley shaft is connected with a right overturning shaft through an LX2 coupling C to transmit intermittent motion to the. In the horizontal clamping device, the right end of the right turnover shaft is arranged in a tapered roller bearing, the tapered roller bearing is arranged in a bearing hole C on a right rear end clamping seat, and the right end of the bearing is sealed by a sealing cover. The shaft sleeve is wrapped on the periphery of the turnover shaft, and the left end of the right turnover shaft is fixedly connected with the right clamping jaw into a whole. The left clamping jaw is fixedly connected with the left overturning shaft into a whole, the left overturning shaft is arranged on the left rear end clamping seat in the same mode, the left rear end clamping seat is connected with the air cylinder fixing seat through a bolt, the air cylinder fixing seat is connected with the air cylinder A into a whole, the right rear end clamping seat is also connected with the air cylinder B, and the structure of the air cylinder A is completely the same as that of the air cylinder B. Air cylinder A and air cylinder B provide horizontal clamping force for right clamping jaw and left clamping jaw. The left rear end clamping seat is fixedly connected with a rack, and the rack is meshed with the gear. Guiding the horizontal clamping movement of the clamping jaw. And meanwhile, a synchronizing shaft is arranged between the right clamping jaw and the left clamping jaw, and transmits the intermittent motion generated by the intermittent transmission mechanism from the right clamping jaw to the left clamping jaw and synchronizes the motion of the two clamping jaws.

Further, in the transmission system, an electric motor provides power, and a power output shaft A of the electric motor is connected with a power input shaft of the ZQA type speed reducer through a shaft joint A of LX 2. The ZQA type speed reducer is a primary speed reducer, and a power output shaft B of the ZQA type speed reducer is connected with a dial plate shaft through an LX2 coupling B.

Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the 90-degree grooved pulley overturning machine has low requirements on working environment and simple structure, so that the manufacturing cost is low.

(2) The intermittent motion of the 90-degree grooved pulley overturning machine is generated by the cooperation of the grooved pulley and the driving plate, so that the overturning angle of each work is accurate.

(3) The clamping force of the clamping structure of the 90-degree grooved pulley overturning machine is provided by the buffer cylinder, and no impact phenomenon and impact noise exist when the clamping structure reaches the stroke end. And because the horizontal clamping motion of the clamping jaw is guided by the gear and the rack, the clamping motion is accurate and reliable.

(4) The overturning speed of the 90-degree grooved wheel overturning machine is controlled by a control system, so that the speed is fixed and cannot be changed too much, and a scene is not impacted after the overturning is finished.

(5) The clamping force of the 90-degree grooved pulley overturning machine is provided by the air cylinder, air is economical and easy to obtain, difficulty in supply is avoided, used air is directly discharged by the air cylinder, the treatment is convenient, and pollution is avoided.

(6) The turnover structure of the 90-degree grooved pulley turnover machine has good adaptability to different workpieces and can adapt to workpieces of various sizes.

Drawings

Figure 1 shows a main view of a 90 degree sheave upender provided by an embodiment;

FIG. 2 shows a top view of a 90 degree sheave upender provided by an embodiment;

FIG. 3 shows a schematic structural diagram of a frame of a 90-degree sheave turnover machine provided by the embodiment;

FIG. 4 shows two oblique views of the turnover mechanism provided by the embodiment;

FIG. 5 shows a cross-sectional view of an intermittent motion mechanism provided by an embodiment;

description of the main component symbols:

(1) comprises a frame; (2) a turnover system; (3) transmission system

(1-1) a motor stand; (1-2) overturning a rack; (1-1-1) a stage; (1-1-2) a motor board; (1-1-3) a decelerator plate; (1-2-1) a part table supporting base plate; (1-2-2) overturning a rack bottom plate; (1-2-3) a part table support column; (1-2-4) upper and lower platform limiting blocks; (1-2-5) vertical frame

(2-1) an intermittent transmission mechanism; (2-2) a horizontal clamping device; (2-1-1) a dial shaft; (2-1-2) a tapered roller bearing A; (2-1-3) an intermittent drive mechanism housing; (2-1-4) a transparent cover A; (2-1-5) a bearing end cover A and (2-1-6) a driving plate; (2-1-7) a sheave; (2-1-8) sheave shafts; (2-1-9) a bearing hole A; (2-1-10) a tapered roller bearing B; (2-1-11) a bearing hole B; (2-1-12) bearing end cap B; (2-1-13) a transparent cover B; (2-1-14) LX2 coupler C; (2-2-1) a right overturning shaft; (2-2-2) clamping jaws (comprising a right clamping jaw (2-2-8) and a left clamping jaw (2-2-9)); (2-2-3) a tapered roller bearing C; (2-2-4) a right rear end clamping seat; (2-2-5) a bearing hole C; (2-2-6) capping; (2-2-7) shaft sleeves; (2-2-8) a right clamping jaw; (2-2-9) a left clamping jaw; (2-2-10) turning the shaft leftwards; (2-2-11) a left rear end clamping seat; (2-2-12) a cylinder fixing seat; (2-2-13) cylinder a; (2-2-14) cylinder B; (2-2-15) a rack; (2-2-16) gears; (2-2-17) synchronizing shaft

(3-1) a motor; (3-2) LX2 coupler a; (3-3) ZQA type decelerator; (3-4) LX2 coupler B; (3-5) a power output shaft A; (3-6) a power input shaft; and (3-7) a power output shaft B.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention are clearly and completely described below, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in figures 1-5, the utility model discloses a 90-degree sheave turnover machine, its basic constitution includes frame, upset system, transmission system

Further, as shown in a schematic diagram of a rack structure shown in fig. 3, the rack structure includes a motor rack (1-1) and a turnover rack (1-2), in the motor rack (1-1), a motor plate (1-1-2) is welded on the rack (1-1-1), the motor (3-1) is installed on the motor plate (1-1-2) through bolts, a speed reducer plate (1-1-3) is also welded on the rack (1-1-1), and the speed reducer (3-1) is installed on the speed reducer plate (1-1-3) through bolts. In the turnover machine rack (1-2), a part platform supporting bottom plate (1-2-1) is connected to the turnover machine rack bottom plate (1-2-2) through bolts and nuts, 4 part platform supporting columns (1-2-3) are connected to the part platform supporting bottom plate (1-2-1) through screws, upper and lower platform limiting blocks (1-2-4) are welded to the 4 part platform supporting columns (1-2-3), two sides of a vertical rack (1-2-5) are fixedly installed on the turnover machine rack (1-2) through inner hexagonal cylindrical head screws, and the whole horizontal clamping device (2-2) is fixedly connected to the vertical rack (1-2-5).

Further, as shown in fig. 4 and 5, the turnover system (2) comprises an intermittent transmission mechanism (2-1) and a horizontal clamping device (2-2). In the intermittent transmission mechanism (2-1), a dial shaft (2-1-1) is connected with a power output shaft of a ZQA type speed reducer (3-3) in a transmission system (3) through an LX2 coupler B (3-4), and the dial shaft (2-1-1) is a power input shaft of a turnover system. Two ends of a dial plate shaft (2-1-1) are arranged in a left conical roller bearing A (2-1-2) and a right conical roller bearing A (2-1-2), the left conical roller bearing (2-1-2) and the right conical roller bearing (2-1-2) are arranged in a left bearing hole A (2-1-9) and a right bearing hole A (2-1-9) of an intermittent transmission mechanism shell (2-1-3), the outer end of the right conical roller bearing (2-1-2) is positioned and sealed by a transparent cover A (2-1-4), and the outer end of the left conical roller bearing A (2-1-2) is positioned and sealed by a bearing end cover A (2-1-5). The dial (2-1-6) and the dial shaft (2-1-1) are an integral body, and the dial (2-1-6) is matched with the grooved wheel (2-1-7) and drives the grooved wheel. The grooved pulley (2-1-7) and the grooved pulley shaft (2-1-8) are an integral body, the left end and the right end of the grooved pulley shaft (2-1-8) are respectively arranged in a left conical roller bearing B (2-1-10) and a right conical roller bearing B (2-1-10) which are respectively arranged in a left bearing hole B (2-1-11) and a right bearing hole B (2-1-11) of an intermittent transmission mechanism shell (2-1-3), wherein the right end of the grooved pulley shaft (2-1-8) is positioned and sealed by a bearing end cover B (2-1-12), the left end is positioned and sealed by a transparent cover B (2-1-13), the right end of the grooved pulley shaft (2-1-8) is connected with the turnover shaft (2-2-1) through an LX2 coupler C (2-1-14), intermittent motion is transmitted to the clamping jaws (2-2-2). In the horizontal clamping device (2-2), the right end of the right turnover shaft (2-2-1) is arranged in a tapered roller bearing (2-2-3), the tapered roller bearing (2-2-3) is arranged in a bearing hole C (2-2-5) on the right rear end clamping seat (2-2-4), and the right end of the bearing (2-2-3) is sealed by a sealing cover (2-2-6). The shaft sleeve (2-2-7) is wrapped on the periphery of the turnover shaft (2-2-1), and the left end of the right turnover shaft (2-2-1) is fixedly connected with the right clamping jaw (2-2-8) into a whole. The left clamping jaw (2-2-9) is fixedly connected with the left overturning shaft (2-2-10) into a whole, the left overturning shaft (2-2-10) is arranged on the left rear end clamping seat (2-2-11) in the same way, the left rear end clamping seat (2-2-11) is connected with the air cylinder fixing seat (2-2-12) through a bolt, the air cylinder fixing seat (2-2-12) is connected with the air cylinder (2-2-13) into a whole, the right rear end clamping seat (2-2-4) is also connected with the air cylinder (2-2-14), and the structure of the air cylinder (2-2-14) is completely the same as that of the air cylinder (2-2-13). The air cylinder (2-2-13) and the air cylinder (2-2-14) provide horizontal clamping force for the right clamping jaw (2-2-8) and the left clamping jaw (2-2-9). The left rear end clamping seat (2-2-11) is also fixedly connected with a rack (2-2-15), and the rack (2-2-15) is meshed with a gear (2-2-16). Guiding the horizontal clamping movement of the clamping jaw (2-2-2). Meanwhile, a synchronous shaft (2-2-17) is arranged between the right clamping jaw (2-2-8) and the left clamping jaw (2-2-9), and the synchronous shaft (2-2-17) transmits the intermittent motion generated by the intermittent transmission mechanism (2-1) from the right clamping jaw (2-2-8) to the left clamping jaw (2-2-9) and synchronizes the motion of the two clamping jaws.

Further, as shown in fig. 2, in the transmission system (3), an electric motor (3-1) provides power, and a power output shaft A (3-5) of the electric motor is connected with a power input shaft (3-6) of the ZQA type speed reducer (3-3) through an LX2 coupling A (3-2). The ZQA type speed reducer (3-3) is a primary speed reducer, and a power output shaft B (3-7) of the ZQA type speed reducer is connected with a dial plate shaft (2-1-1) through an LX2 coupling B (3-4).

A90-degree grooved pulley overturning machine has the following working principle and working process:

after the motor (3-1) is started, the power output shaft (3-5) outputs high rotating speed, and the power output shaft (3-5) is connected with the power input shaft (3-6) of the ZQA type speed reducer (3-3) through the LX2 coupling A (3-2). The higher rotating speed is transmitted to a power input shaft (3-6) of the ZQA type speed reducer (3-3), the power input shaft (3-6) is a high-speed shaft of the ZQA type speed reducer (3-3), and after the speed is reduced by the first stage of the speed reducer, a power output shaft B (3-7) of the ZQA type speed reducer (3-3) outputs a lower rotating speed. A power output shaft B (3-7) of the ZQA type speed reducer (3-3) is connected with a dial plate shaft (2-1-1) through an LX2 coupler B (3-4), the lower rotating speed is transmitted to the dial plate shaft (2-1-1), so that the dial plate (2-1-15) is driven to rotate, the dial plate (2-1-6) is matched with the grooved pulley (2-1-7), due to the structural characteristics of the grooved pulley (2-1-7), the continuous rotary motion of the dial plate (2-1-6) can be converted into the intermittent rotary motion of the grooved pulley (2-1-7), and each intermittent grooved pulley (2-1-7) rotates for 90 degrees. The grooved pulley (2-1-7) and the grooved pulley shaft (2-1-8) are integrated, so that the grooved pulley shaft (2-1-8) also performs intermittent rotary motion, and the grooved pulley shaft (2-1-8) and the overturning shaft (2-2-1) are connected through an LX2 coupling C (2-1-14) to transmit the intermittent motion to the overturning shaft (2-2-1), so that the clamping jaw (2-2-2) is driven to perform intermittent rotary motion. In each movement interval, the air cylinder (2-2-13) and the air cylinder (2-2-14) work to drive the left clamping jaw (2-2-9) to move horizontally to the right. The left clamping jaw (2-2-9) is a moving end, and the right clamping jaw (2-2-8) is a fixed end. Meanwhile, in order to ensure the accuracy of horizontal movement, the meshing structure of the rack (2-2-15) and the gear (2-2-16) guides the right horizontal movement of the left clamping jaw (2-2-9). After the left clamping jaw (2-2-9) horizontally moves rightwards to clamp the workpiece, the clamping jaw (2-2-2) starts to rotate intermittently, so that the purpose of turning the workpiece by 90 degrees is achieved.

Having shown and described the basic principles and essential features of the invention and its advantages, it will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but is susceptible to various changes and modifications without departing from the spirit and scope of the invention, all of which are intended to be covered by the appended claims and their equivalents.

Claims

1. A90-degree sheave turnover machine is characterized by comprising a machine frame (1), a turnover system (2) and a transmission system (3); the rack (1) comprises a motor rack (1-1) and a turnover machine rack (1-2), wherein the motor rack (1-1) is fixedly connected with a motor (3-1) to support and fix the motor (3-1); the overturning machine rack (1-2) is fixedly connected with the overturning system (2) and used for supporting and fixing the overturning mechanism; the motor (3-1) is matched with the ZQA type speed reducer (3-3) to reduce the rotating speed and transmit power to the intermittent transmission mechanism (2-1), the horizontal clamping device (2-2) clamps the workpiece, and the intermittent transmission mechanism (2-1) in the overturning system (2) is matched with the horizontal clamping device (2-2) to overturn the workpiece by 90 degrees.

2. A 90 degree sheave upender as claimed in claim 1 wherein: the rack (1) comprises a motor rack (1-1) and a turnover machine rack (1-2), wherein in the motor rack (1-1), a motor plate (1-1-2) is welded on the rack (1-1-1), a motor (3-1) is installed on the motor plate (1-1-2) through bolts, a speed reducer plate (1-1-3) is also welded on the rack (1-1-1), a ZQA type speed reducer (3-3) is installed on the speed reducer plate (1-1-3) through bolts, in the turnover machine rack (1-2), a part platform supporting base plate (1-2-1) is connected on a turnover machine rack base plate (1-2-2) through bolts and nuts, and 4 part platform supporting columns (1-2-3) are connected on the part platform supporting base plate (1-2-3) through bolts 2-1), upper and lower limit blocks (1-2-4) are welded on 4 part table support columns (1-2-3), two sides of a vertical frame (1-2-5) are fixedly arranged on a turnover machine table frame (1-2) through hexagon socket head cap screws, and the whole horizontal clamping device (2-2) is fixedly connected on the vertical frame (1-2-5).

3. A 90 degree sheave upender as claimed in claim 1 wherein: the turnover system (2) comprises an intermittent transmission mechanism (2-1) and a horizontal clamping device (2-2); in the intermittent transmission mechanism (2-1), a dial shaft (2-1-1) is connected with a power output shaft of a ZQA type speed reducer (3-3) in a transmission system (3) through an LX2 coupler B (3-4), the dial shaft (2-1-1) is a power input shaft of a turnover system, two ends of the dial shaft (2-1-1) are arranged in a left conical roller bearing A (2-1-2) and a right conical roller bearing A (2-1-2), the left conical roller bearing A (2-1-2) and the right conical roller bearing A (2-1-2) are arranged in a left bearing hole A (2-1-9) and a right bearing hole A (2-1-9) of an intermittent transmission mechanism shell (2-1-3), the outer end of the right conical roller bearing A (2-1-2) is positioned and sealed by a transparent cover A (2-1-4), and the outer end of the left conical roller bearing A (2-1-2) is positioned and sealed by 1-5), a dial plate (2-1-6) and a dial plate shaft (2-1-1) are integrated, the dial plate (2-1-6) is matched with a grooved pulley (2-1-7) and drives the latter, the grooved pulley (2-1-7) and the grooved pulley shaft (2-1-8) are integrated, the left end and the right end of the grooved pulley shaft (2-1-8) are respectively arranged in a left conical roller bearing B (2-1-10) and a right conical roller bearing B (2-1-10), the left conical roller bearing B (2-1-10) and the right conical roller bearing B (2-1-10) are respectively arranged in a left bearing hole B (2-1-11) and a right bearing hole B (2-1-11) of an intermittent transmission mechanism shell (2-1-3), wherein the right end of the grooved pulley shaft (2-1-8) is positioned and sealed by a bearing, the left end of the groove wheel shaft (2-1-8) is positioned and sealed by a transparent cover B (2-1-13), the right end of the groove wheel shaft (2-1-8) is connected with a right turnover shaft (2-2-1) through an LX2 coupler C (2-1-14) to transmit intermittent motion to a clamping jaw (2-2-2), in a horizontal clamping device (2-2), the right end of the right turnover shaft (2-2-1) is arranged in a tapered roller bearing (2-2-3), the tapered roller bearing (2-2-3) is arranged in a bearing hole C (2-2-5) on a right rear end clamping seat (2-2-4), the right end of the tapered roller bearing (2-2-3) is sealed by a sealing cover (2-2-6), and a shaft sleeve (2-2-7) is wrapped on the periphery of the right turnover shaft (2-2-1), the left end of a right turnover shaft (2-2-1) is fixedly connected with a right clamping jaw (2-2-8) into a whole, a left clamping jaw (2-2-9) is fixedly connected with a left turnover shaft (2-2-10) into a whole, the left turnover shaft (2-2-10) is arranged on a left rear end clamping seat (2-2-11) in the same way, the left rear end clamping seat (2-2-11) is connected with a cylinder fixing seat (2-2-12) through a bolt, the cylinder fixing seat (2-2-12) is connected with a cylinder A (2-2-13) into a whole, a right rear end clamping seat (2-2-4) is also connected with a cylinder B (2-2-14), and the structure of the cylinder B (2-2-14) is completely the same as that of the cylinder A (2-2-13), the cylinder A (2-2-13) and the cylinder B (2-2-14) provide horizontal clamping force for the right clamping jaw (2-2-8) and the left clamping jaw (2-2-9), the left rear end clamping seat (2-2-11) is also fixedly connected with the rack (2-2-15), the rack (2-2-15) is meshed with the gear (2-2-16) to guide the horizontal clamping movement of the clamping jaws (2-2-2), meanwhile, a synchronous shaft (2-2-17) is arranged between the right clamping jaw (2-2-8) and the left clamping jaw (2-2-9), and the synchronous shaft (2-2-17) transmits the intermittent motion generated by the intermittent transmission mechanism (2-1) from the right clamping jaw (2-2-8) to the left clamping jaw (2-2-9) and synchronizes the motion of the two clamping jaws.

4. A 90 degree sheave upender as claimed in claim 1 wherein: in the transmission system (3), an electric motor (3-1) provides power, a power output shaft A (3-5) of the electric motor is connected with a power input shaft (3-6) of a ZQA type speed reducer (3-3) through an LX2 coupler A (3-2), the ZQA type speed reducer (3-3) is a primary speed reducer, and a power output shaft B (3-7) of the electric motor is connected with a dial shaft (2-1-1) through an LX2 coupler B (3-4).