CN216234843U

CN216234843U - Blanking mechanism for vacuum negative-pressure heat-insulation plate cutting equipment

Info

Publication number: CN216234843U
Application number: CN202122987251.1U
Authority: CN
Inventors: 秦亚林; 侯小钊; 郭方锐
Original assignee: Luoyang Qinhao Machinery Equipment Co ltd
Current assignee: Luoyang Qinhao Machinery Equipment Co ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-04-08
Anticipated expiration: 2031-12-01

Abstract

The utility model relates to the field of vacuum negative-pressure heat-insulation plate production equipment devices, in particular to a blanking mechanism for vacuum negative-pressure heat-insulation plate cutting equipment, which comprises a left side mounting support part, a right side mounting support part, a guide rail mounting frame, a mounting support guide rail, a movable mounting part, a lead screw driving part, an air cylinder working part, a rotary adjusting part and a sucker working part, wherein the left side mounting support part and the right side mounting support part are symmetrically mounted on external cutting equipment.

Description

Blanking mechanism for vacuum negative-pressure heat-insulation plate cutting equipment

Technical Field

The utility model relates to the field of vacuum negative-pressure heat-insulation board production equipment, in particular to a blanking mechanism for vacuum negative-pressure heat-insulation board cutting equipment.

Background

The goods refrigerator car is a closed van-type transport vehicle for maintaining the temperature of frozen goods or fresh-keeping goods, generally speaking, the refrigerator car is a special refrigerator car with a refrigerating device of a refrigerating unit and a polyurethane heat insulation van, the refrigerator car can be classified according to manufacturers, chassis bearing capacity and van types, the goods refrigerator car mainly comprises a walking part of a special car chassis and a heat insulation van body, the heat insulation van body in the refrigerator car mainly comprises a vacuum negative pressure heat insulation board, the vacuum negative pressure heat insulation board is a heat insulation board produced on a vacuum negative pressure platform, a van body of the general refrigerator car is formed by installing and combining the vacuum negative pressure heat insulation boards, after the vacuum negative pressure heat insulation boards are produced, size adaptive cutting processing is carried out on the vacuum negative pressure heat insulation boards through cutting equipment, after the cutting is finished, an operator needs to unload the cut heat insulation boards in a manual carrying mode, under general conditions, 2~4 people are needed to cooperate the operation jointly, just can accomplish unloading transport operation, and operating personnel intensity of labour is big, and the recruitment of enterprise is with high costs, can not satisfy the production and use needs of enterprise.

Disclosure of Invention

The utility model aims to provide a blanking mechanism for vacuum negative-pressure heat-insulation board cutting equipment, which can be installed on the vacuum negative-pressure heat-insulation board cutting equipment and used for carrying out mechanical blanking operation on a heat-insulation board subjected to size adaptive cutting processing, replaces the existing manual blanking mode, reduces the labor burden of operators and saves labor cost for enterprises.

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

a blanking mechanism for vacuum negative-pressure insulation board cutting equipment comprises a left side mounting and supporting part, a right side mounting and supporting part, a guide rail mounting frame, a mounting and supporting guide rail, a movable mounting part, a lead screw driving part, an air cylinder working part, a rotation adjusting part and a sucker working part, wherein the left side mounting and supporting part and the right side mounting and supporting part are symmetrically mounted on the external cutting equipment, one side of the guide rail mounting frame is mounted on the left side mounting and supporting part and is fastened with the left side mounting and supporting part, the other side of the guide rail mounting frame is mounted on the right side mounting and supporting part and is fastened with the right side mounting and supporting part, the mounting and supporting guide rail is mounted on the guide rail mounting frame, the movable mounting part is mounted on the mounting and supporting guide rail and is in damping sliding contact with the mounting and supporting guide rail, the air cylinder working part is mounted on the movable mounting part, the rotation adjusting part is mounted on the lower side of the air cylinder working part and is connected with the air cylinder working part, the sucking disc working part is arranged on the rotation adjusting part and is connected with the rotation adjusting part, the left side installation supporting part and the right side installation supporting part are provided with a lead screw driving part, and the lead screw driving part is connected with the movable installation part through a connecting piece.

The left side installation supporting part and the right side installation supporting part are of the same structure and comprise installation connecting plates, installation supporting plates and working clamping plates, the installation connecting plates are installed on external cutting equipment, the installation supporting plates are installed on the installation connecting plates and fixedly connected with the installation connecting plates, the working clamping plates are arranged on the outer sides of the installation supporting plates and connected with the installation supporting plates, first clamping grooves used for clamping and installing guide rail installation frames are machined in the working clamping plates, and second clamping grooves used for clamping and installing the lead screw driving part are machined in the first clamping grooves.

The movable installation part comprises a movable installation plate, a first installation sliding block and a second installation sliding block, wherein the first installation sliding block and the second installation sliding block are clamped on the installation supporting guide rail and are in damping sliding contact with the installation supporting guide rail, and the movable installation plate is installed on the first installation sliding block and the second installation sliding block and is fixedly connected with the first installation sliding block and the second installation sliding block.

The lead screw drive portion include, first support bearing group, second support bearing group, lead screw body, servo motor and removal nut, first support bearing group and second support bearing group the two install on the second block groove on the work block board and hug closely together with second block groove, a side end of lead screw body install at the bearing inner circle position of first support bearing group and link to each other with first support bearing group interference fit, another side end of lead screw body install at the bearing inner circle position of second support bearing group and link to each other with second support bearing group interference fit, a side end of lead screw body link to each other with servo motor's power take off end, it has the external screw thread to process in lead screw body periphery, removal nut install on lead screw body periphery and link to each other with lead screw body screw thread fit.

The air cylinder working part comprises an air cylinder body, an air cylinder rod and a connecting movable plate, the air cylinder body is arranged on the movable mounting plate and is connected with the movable mounting plate, the air cylinder rod is arranged on the air cylinder body, and the connecting movable plate is arranged at the outer side end part of the air cylinder rod and is fixedly connected with the air cylinder rod.

The rotation adjusting part comprises a rotating motor, a motor driving shaft, a motor mounting frame and a connecting turntable, the motor mounting frame is mounted on the connecting movable plate and fixedly connected with the connecting movable plate, the rotating motor is mounted on the motor mounting frame, the motor driving shaft for rotary driving is mounted on the rotating motor, and the connecting turntable is mounted at the outer end of the motor driving shaft and fixedly connected with the motor driving shaft.

The sucking disc work portion include, sucking disc body, sucking disc installation axle, stop nut, sucking disc mounting bracket and buffer spring, the bottom of sucking disc installation axle install on the sucking disc body and link to each other with the sucking disc body is fixed, the buffer spring plug bush install epaxial at the sucking disc, processing has the through-hole that runs through on the sucking disc mounting bracket, the upper portion of sucking disc installation axle run through the through-hole of processing on the sucking disc mounting bracket, the upper portion processing of installing the axle at the sucking disc has the external screw thread, the stop nut knob install the axle upper portion position at the sucking disc and with the sucking disc spacing on the sucking disc mounting bracket.

The utility model has the beneficial effects that: the blanking mechanism for the vacuum negative-pressure heat-insulation plate cutting equipment is scientific in overall structural design, simple and convenient in operation and use process, and when the blanking mechanism is used specifically, the blanking mechanism is mainly installed on external cutting equipment through the combined synergistic effect of the left side installation supporting part, the right side installation supporting part, the installation supporting guide rail, the moving installation part, the lead screw driving part, the air cylinder working part, the rotation adjusting part, the sucker working part and other components, can replace manual work to perform blanking and stacking operation on the vacuum negative-pressure plates after cutting in a mechanical mode Reliable, job stabilization's mechanical components and parts, the fault rate in the use is low, and the maintenance in later stage is also comparatively laborsaving.

Drawings

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

FIG. 2 is a schematic overall side view of the present invention;

FIG. 3 is a schematic structural view of the left and right mounting support portions of the present invention;

FIG. 4 is a schematic structural view of a movable mounting part of the present invention;

FIG. 5 is a schematic structural view of a screw driving portion according to the present invention;

FIG. 6 is a schematic view showing the construction of a cylinder operating portion in the present invention;

FIG. 7 is a schematic view of the structure of the rotation adjustment part according to the present invention;

FIG. 8 is a schematic view showing the structure of the working part of the suction cup according to the present invention;

the reference numbers in the figures are: 1-left side installation supporting part, 2-right side installation supporting part, 3-guide rail installation rack, 4-installation supporting guide rail, 5-moving installation part, 6-lead screw driving part, 7-cylinder working part, 8-rotation adjusting part, 9-sucker working part, 10-vacuum negative pressure heat preservation plate, 101-installation connecting plate, 102-installation supporting plate, 103-work clamping plate, 104-first clamping groove, 105-second clamping groove, 501-moving installation plate, 502-first installation sliding block, 503-second installation sliding block, 601-first supporting bearing group, 602-second supporting bearing group, 603-lead screw body, 604-servo motor, 605-moving nut, 701-cylinder body, 702-cylinder rod, 703-connecting a movable plate, 801-a rotating motor, 802-a motor driving shaft, 803-a motor mounting rack, 804-connecting a turntable, 901-a sucker body, 902-a sucker mounting shaft, 903-a limiting nut, 904-a sucker mounting rack and 905-a buffer spring.

Detailed Description

Specific example 1: the core of the utility model is to provide a blanking mechanism for vacuum negative-pressure insulation board cutting equipment, which is installed on external cutting equipment, can replace manual work to perform blanking and stacking operation on the cut vacuum negative-pressure boards in a mechanical mode, and compared with the traditional manual blanking operation mode, the blanking mechanism greatly reduces the labor intensity of operators. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "left" and "right" used in this specification to denote orientation are used with reference to a particular structure shown in the drawings, and do not constitute a limitation on the structure.

As shown in the attached

drawings

1 and 2 of the specification, the blanking mechanism for the vacuum negative-pressure insulation board cutting equipment mainly comprises a left mounting and supporting part 1, a right mounting and supporting part 2, a guide rail mounting frame 3, a mounting and supporting guide rail 4, a movable mounting part 5, a lead screw driving part 6, an air cylinder working part 7, a rotation adjusting part 8 and a sucker working part 9, wherein the left mounting and supporting part 1 and the right mounting and supporting part 2 are used for mounting and supporting the guide rail mounting frame 3 and the lead screw driving part 6, and the left mounting and supporting part 1 and the right mounting and supporting part 2 are symmetrically mounted on the external large board cutting equipment and are used for mounting and supporting the mounting and supporting guide rail 4

One side of the guide rail mounting rack 3 is arranged on the left side mounting and supporting part 1 and is fastened with the left side mounting and supporting part 1, the other side of the guide rail mounting rack is arranged on the right side mounting and supporting part 2 and is fastened with the right side mounting and supporting part 2, the mounting and supporting guide rail 4 used for mounting and supporting the movable mounting part 5 is arranged on the guide rail mounting rack 3, the movable mounting part 5 used for mounting the cylinder working part 7 is arranged on the mounting and supporting guide rail 4 and is in damping sliding contact with the mounting and supporting guide rail 4, the cylinder working part 7 used for driving the rotation adjusting part 8 to move up and down is arranged on the movable mounting part 5, wherein the rotation adjusting part 8 is arranged at the lower side of the cylinder working part 7 and is connected with the cylinder working part 7, and the sucker working part 9 used for directly carrying out adsorption blanking on the cut insulation board is arranged on the rotation adjusting part 8 and is arranged together with the rotation adjusting part 8, the left side installation supporting part 1 and the right side installation supporting part 2 are provided with a lead screw driving part 6 for driving the movable installation part 5 to move, wherein the lead screw driving part 6 is connected with the movable installation part 5 through a connecting piece.

As shown in the attached figure 3, the left side installation support part 1 and the right side installation support part 2 for installing and supporting the guide rail installation frame 3 and the screw driving part 6 are the same structure, and the two parts include an installation connection plate 101, an installation support plate 102 and a working clamping plate 103, the installation connection plate 101 for installing the installation support plate 102 is tightly installed on the external cutting equipment, the installation support plate 102 for installing and supporting the working clamping plate 103 is tightly installed on the installation connection plate 101, the working clamping plate 103 is arranged outside the installation support plate 102 and fixedly connected with the installation support plate 102, a first clamping groove 104 for clamping and installing the guide rail installation frame 3 is processed on the working clamping plate 103, a second clamping groove 105 for clamping and installing the screw driving part 6 is processed in the first clamping groove 104, when installing, the guide rail installation frame 3 can be installed in the first clamping groove 104, the first supporting bearing set 601 and the second supporting bearing set 602 of the screw driving portion 6 can be mounted in the second engaging groove 105 in an engaging manner.

As shown in fig. 4, the movable mounting portion 5 for mounting and supporting the cylinder operating portion 7 includes a movable mounting plate 501, a first mounting slider 502, and a second mounting slider 503, wherein the first mounting slider 502 and the second mounting slider 503 for mounting the movable mounting plate 501 are engaged with the mounting support rail 4 and slidably contact with the mounting support rail 4 in a damping manner, and the movable mounting plate 501 directly mounted and supported on the cylinder operating portion 7 is mounted on the first mounting slider 502 and the second mounting slider 503 and fixedly connected to both the first mounting slider 502 and the second mounting slider 503.

As shown in fig. 5, the screw driving portion 6 for driving the movable mounting portion 5 to move includes a first supporting bearing set 601, a second supporting bearing set 602, a screw body 603, a servo motor 604 and a movable nut 605, wherein the first supporting bearing set 601 and the second supporting bearing set 602 are used for mounting and supporting the screw body 603, wherein both the first supporting bearing set 601 and the second supporting bearing set 602 are mounted and clamped on the second clamping groove 105 of the working clamping plate 103 and tightly attached to the second clamping groove 105, one side end of the screw body 603 is mounted at the inner bearing ring of the first supporting bearing set 601 and connected to the first supporting bearing set 601 in an interference fit manner, the other side end is mounted at the inner bearing ring of the second supporting bearing set 602 and connected to the second supporting bearing set 602 in an interference fit manner, one side end of the screw body 603 is connected to the power output end of the servo motor 604 for receiving the power torque of the servo motor 604, an external thread is processed on the outer circumference of the screw body 603, and a moving nut 605 for directly driving the moving installation part 5 to move is installed on the outer circumference of the screw body 603 and is connected with the screw body 603 in a threaded fit manner.

As shown in fig. 6, the cylinder operating part 7 includes a cylinder body 701, a cylinder rod 702, and a connecting plate 703, wherein the cylinder body 701 for mounting the cylinder rod 702 is mounted on the movable mounting plate 501 and fixed to the movable mounting plate 501, the cylinder rod 702 is mounted on the cylinder body 701, and the connecting plate 703 for directly mounting and supporting the rotation adjusting part 8 is mounted on the outer side end part of the cylinder rod 702 and fixed to the cylinder rod 702.

As shown in fig. 7, the rotation adjusting unit 8 for installing and driving the angle adjusting operation of the suction cup working unit 9 includes a rotating electrical machine 801, a motor driving shaft 802, a motor installing frame 803 and a connecting turntable 804, wherein the motor installing frame 803 for installing the rotating electrical machine 801 is installed on the connecting turntable 703 and is fixedly connected with the connecting turntable 703, the rotating electrical machine 801 for adjusting the rotation driving torque is installed on the motor installing frame 803, the motor driving shaft 802 for rotation driving is installed on the rotating electrical machine 801, and the connecting turntable 804 for installing the suction cup working unit 9 is installed at the outer end of the motor driving shaft 802 and is fixedly connected with the motor driving shaft 802.

As shown in the attached fig. 8, the suction cup working portion 9 for performing suction operation on the vacuum negative pressure plate after cutting comprises a suction cup body 901, a suction cup mounting shaft 902, a limit nut 903, a suction cup mounting bracket 904 and a buffer spring 905, wherein the bottom of the suction cup mounting shaft 902 is mounted on the suction cup body 901 and fixedly connected with the suction cup body 901, the suction cup mounting shaft 902 is integrally cylindrical, the buffer spring 905 is inserted and sleeved on the suction cup mounting shaft 902, a through hole is processed on the suction cup mounting bracket 904, the aperture of the through hole is larger than the outer diameter of the suction cup mounting shaft 902,

during the installation, the upper portion of sucking disc installation axle 902 runs through the through-hole of processing on sucking disc mounting bracket 904, and the upper portion processing of sucking disc installation axle 902 has the external screw thread, and wherein, stop nut 903 knob is spacing on sucking disc mounting bracket 904 at the upper portion position of sucking disc installation axle 902 and with sucking disc installation axle 902.

The operation process of the utility model during specific operation and use is as follows: firstly, when the utility model is in an initial state, the movable installation part 5 is positioned at the leftmost part of the whole invention, when the cut vacuum negative pressure plate needs to be blanked, an operator can control the cylinder body 701 in the cylinder working part 7 to work through an external controller, the cylinder body 701 drives the connecting movable plate 703 to move downwards through the cylinder rod 702, the connecting movable plate 703 drives the rotary adjustment part 8 arranged at the lower side of the connecting movable plate 703 to move downwards, at the moment, the rotary adjustment part 8 can drive the sucking disc working part 9 to contact with the cut vacuum negative pressure plate through the sucking disc body 901 arranged on the sucking disc working part and adsorb the cut vacuum negative pressure plate, then, the operator can drive the servo motor 604 in the lead screw driving part 6 to work, the servo motor 604 drives the lead screw body 603 to rotate anticlockwise, at the moment, under the action of the screw thread pushing force, the movable nut arranged on the lead screw body 603 moves rightwards 605, when the moving nut 605 moves rightwards, the moving mounting plate 501 in the moving mounting part 5 can be driven by the connecting piece to move rightwards on the mounting and supporting guide rail 4 through the first mounting slide block 502 and the second mounting slide block 503, at this time, the moving mounting part 5 can drive the cylinder working part 7, the rotation adjusting part 8 and the sucker working part 9 mounted thereon to move rightwards, and further drive the vacuum negative pressure plate adsorbed by the sucker body 901 to move rightwards to a blanking station for blanking operation, when the plate needs to be angularly placed and adjusted, an operator can control the rotating motor 801 in the rotation adjusting part 8 to work, at this time, the rotating motor 801 can drive the connecting turntable 804 to rotate through the motor driving shaft 802, the connecting turntable 804 can drive the sucker working part 9 mounted thereon to integrally rotate, and further realize the angular adjustment operation of the plate, so that the plate can be stacked on the blanking station at the optimal position, it should be noted that the buffer spring 905 in the suction cup working portion 9 of the present invention can perform an upward buffering operation when the suction cup body 901 contacts the negative pressure insulation board, so as to avoid collision and contact damage to the surface of the negative pressure insulation board when the suction cup body 901 contacts the negative pressure insulation board. The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed.

Claims

1. A blanking mechanism for vacuum negative-pressure insulation board cutting equipment is characterized by comprising a left side installation supporting part (1), a right side installation supporting part (2), a guide rail installation frame (3), an installation supporting guide rail (4), a movable installation part (5), a lead screw driving part (6), a cylinder working part (7), a rotation adjusting part (8) and a sucker working part (9), wherein the left side installation supporting part (1) and the right side installation supporting part (2) are symmetrically installed on the peripheral cutting equipment, one side of the guide rail installation frame (3) is installed on the left side installation supporting part (1) and is fastened with the left side installation supporting part (1), the other side of the guide rail installation frame (3) is installed on the right side installation supporting part (2) and is fastened with the right side installation supporting part (2), the installation supporting guide rail (4) is installed on the guide rail installation frame (3), the movable installation part (5) is installed on the installation support guide rail (4) and is in damping sliding contact with the installation support guide rail (4), an air cylinder working part (7) is installed on the movable installation part (5), a rotation adjusting part (8) is installed on the lower side of the air cylinder working part (7) and is connected with the air cylinder working part (7), a sucker working part (9) is installed on the rotation adjusting part (8) and is connected with the rotation adjusting part (8), a lead screw driving part (6) is installed on the left side installation supporting part (1) and the right side installation supporting part (2), and the lead screw driving part (6) is connected with the movable installation part (5) through a connecting piece.

2. The blanking mechanism for vacuum negative pressure insulation board cutting equipment according to claim 1, it is characterized in that the left side mounting and supporting part (1) and the right side mounting and supporting part (2) are formed by the same structure, the two comprise an installation connecting plate (101), an installation supporting plate (102) and a working clamping plate (103), the mounting connecting plate (101) is mounted on an external cutting device, the mounting supporting plate (102) is mounted on the mounting connecting plate (101) and fixedly connected with the mounting connecting plate (101), the working clamping plate (103) is arranged outside the installation support plate (102) and is connected with the installation support plate (102), a first clamping groove (104) for clamping and mounting the guide rail mounting rack (3) is processed on the working clamping plate (103), a second clamping groove (105) for clamping and mounting the screw driving part (6) is processed in the first clamping groove (104).

3. The blanking mechanism for the vacuum negative-pressure heat-insulation plate cutting device as claimed in claim 1, wherein the movable mounting part (5) comprises a movable mounting plate (501), a first mounting slider (502) and a second mounting slider (503), the first mounting slider (502) and the second mounting slider (503) are clamped on the mounting support rail (4) and are in damping sliding contact with the mounting support rail (4), and the movable mounting plate (501) is mounted on the first mounting slider (502) and the second mounting slider (503) and is fixedly connected with the first mounting slider (502) and the second mounting slider (503).

4. The blanking mechanism for the vacuum negative-pressure heat-insulation plate cutting equipment as claimed in claim 2, wherein the lead screw driving part (6) comprises a first supporting bearing set (601), a second supporting bearing set (602), a lead screw body (603), a servo motor (604) and a moving nut (605), the first supporting bearing set (601) and the second supporting bearing set (602) are both installed on a second clamping groove (105) on the working clamping plate (103) and tightly attached to the second clamping groove (105), one side end of the lead screw body (603) is installed at the inner bearing ring part of the first supporting bearing set (601) and connected to the first supporting bearing set (601) in an interference fit manner, the other side end of the lead screw body (603) is installed at the inner bearing ring part of the second supporting bearing set (602) and connected to the second supporting bearing set (602) in an interference fit manner, the screw rod is characterized in that the end part of one side of the screw rod body (603) is connected with the power output end of the servo motor (604), external threads are processed on the periphery of the screw rod body (603), and the movable nut (605) is installed on the periphery circle of the screw rod body (603) and is connected with the screw rod body (603) in a threaded fit mode.

5. The blanking mechanism for the vacuum negative-pressure heat-insulating plate cutting equipment as claimed in claim 3, wherein the cylinder working part (7) comprises a cylinder body (701), a cylinder rod (702) and a connecting movable plate (703), the cylinder body (701) is mounted on the movable mounting plate (501) and connected with the movable mounting plate (501), the cylinder rod (702) is mounted on the cylinder body (701), and the connecting movable plate (703) is mounted at the outer side end part of the cylinder rod (702) and fixedly connected with the cylinder rod (702).

6. The blanking mechanism for the vacuum negative-pressure heat-insulation board cutting device according to claim 5, wherein the rotation adjusting portion (8) comprises a rotating motor (801), a motor driving shaft (802), a motor mounting rack (803) and a connecting turntable (804), the motor mounting rack (803) is mounted on the connecting turntable (703) and is fixedly connected with the connecting turntable (703), the rotating motor (801) is mounted on the motor mounting rack (803), the motor driving shaft (802) for rotation driving is mounted on the rotating motor (801), and the connecting turntable (804) is mounted at the outer end of the motor driving shaft (802) and is fixedly connected with the motor driving shaft (802).

7. The blanking mechanism for vacuum negative pressure insulation board cutting equipment according to claim 1, it is characterized in that the sucker working part (9) comprises a sucker body (901), a sucker mounting shaft (902), a limit nut (903), a sucker mounting frame (904) and a buffer spring (905), the bottom of the sucker mounting shaft (902) is arranged on the sucker body (901) and is fixedly connected with the sucker body (901), the buffer spring (905) is inserted and sleeved on the sucker mounting shaft (902), a through hole is processed on the sucker mounting rack (904), the upper part of the sucker mounting shaft (902) penetrates through the through hole processed on the sucker mounting rack (904), the upper part of the sucker mounting shaft (902) is provided with external threads, and the knob of the limit nut (903) is limited on the sucker mounting frame (904) together with the sucker mounting shaft (902) at the upper part of the sucker mounting shaft (902).