Pin feeding device for positioning connector hole site based on base

Abstract

The utility model discloses a pin feeding device for positioning a connector hole site based on a base. The pin feeding device comprises a device main body and a fixed platform, the device body is provided with a chassis and a supporting arm fixedly connected to one side of the chassis. A liftable vertical needle feeding structure is hoisted at the top end of the supporting arm; a positioning identification area with staggered transverse coordinate axes and longitudinal coordinate axes is arranged at the position, corresponding to the vertical needle feeding structure, of the upper part of the chassis; the platform coordinate adjusting structure can move along a transverse coordinate axis and a longitudinal coordinate axis, the upper part of the platform coordinate adjusting structure is detachably connected with a fixed platform, and the fixed platform is provided with a circular embedded structure clamped with the connector core body; the vertical pin feeding structure is provided with an arc-shaped pin feeding opening used for being coupled with a connecting terminal, so that the vertical pin feeding structure descends and drives the connecting terminal to be inserted into a jack of a connector core body, the precision and the efficiency of pin feeding at the hole site of the connector are effectively improved, and the pin feeding step can be accurately and quickly completed.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit vehicle electrical connector assembly, in particular to a needle feeding device for positioning a connector hole based on a base. Background Art

[0002] In the assembly and wiring of rail vehicle connectors, pin feeding is a key step in the assembly process of connectors. Figure 1 As shown, a connector core 2 is composed of a hard rubber inner core 2-1 and a metal-surrounded round shell 2-2. The inner core 2-1 is composed of regularly arranged plug holes 2-1-2, and numbers are provided on the edges of the wiring holes. In the opposite direction of the wiring direction, a positioning groove 2-1-3 is provided on the circumference of the edge of the inner core 2-1. Figure 2 As shown, the structure of the connection terminal 4 is composed of a terminal front end 4-1, an annular protrusion 4-2, a crimping position 4-3 and a wire 4-4. When wiring, the operator needs to use a clamping tool, a needle pliers, to clamp the crimping position 4-3 of the connection terminal 4, align the terminal front end 4-1 with the jack 2-1-2 on the inner core 2-1, and insert it vertically according to the number;

[0003] Since the connector core 2 is made of hard rubber, and the connector core 2 and the connecting terminal 4 are inserted with an interference fit, alcohol is usually used as a lubricant for spraying during insertion. However, the insertion process is still very laborious and the operation efficiency is low. During the vertical insertion process, due to insufficient human control force, the connecting terminal 4 may bend or break under the annular protrusion 4-2, and the rework process is time-consuming and laborious, affecting the quality of the connector after assembly.

[0004] Therefore, developing a device that can save time, effort, and accurately complete the needle feeding task is of great significance to improving production efficiency and product quality. Utility Model Content

[0005] The purpose of the utility model is to overcome the defects of the prior art and provide a needle feeding device based on a base to locate the connector hole, so as to improve the accuracy and efficiency of needle feeding in the connector hole, and adjust the coordinate positioning through the platform coordinate adjustment structure to ensure that the vertical needle feeding structure can complete the needle feeding accurately and quickly.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model discloses a needle feeding device based on a base to locate the connector hole, comprising:

[0008] The device body and the fixing platform for supporting the connector core;

[0009] The device body comprises a chassis and a support arm fixedly connected to one side of the chassis;

[0010] A vertical needle feeding structure capable of being raised and lowered is hoisted on the top of the support arm;

[0011] Wherein, a positioning mark area having a horizontal coordinate axis and a vertical coordinate axis staggeredly arranged is arranged on the upper part of the chassis corresponding to the position of the vertical needle feeding structure; and

[0012] A platform coordinate adjustment structure capable of displacement along the transverse coordinate axis and the longitudinal coordinate axis, wherein the upper portion of the platform coordinate adjustment structure is detachably connected to the fixed platform, and the fixed platform is provided with a circular embedded structure engaged with the connector core;

[0013] The vertical needle feeding structure is provided with an arc-shaped needle feeding opening for coupling with the connection terminal, so that the vertical needle feeding structure descends and drives the connection terminal to be inserted into the insertion hole of the connector core.

[0014] Further, the support arm includes a longitudinal support arm and a transverse support arm;

[0015] The bottom end of the longitudinal support arm is fixedly connected to the chassis;

[0016] One end of the transverse support arm can be mounted on the longitudinal support arm at any height, and the other end can be lifted and lowered with the vertical needle feeding structure, and one side of the transverse support arm is rotatably connected with a rocker that drives the vertical needle feeding structure to rise and fall;

[0017] The bottom end of the vertical needle feeding structure has a cone portion, and the cone portion is provided with an arc-shaped needle feeding opening with one side being an open structure, and is coupled with the crimping position of the connection terminal and the wire through the arc-shaped needle feeding opening.

[0018] Furthermore, the platform coordinate adjustment structure includes a longitudinal movable sliding shaft arranged in parallel on both sides of the positioning mark area, and a transverse movable sliding shaft arranged perpendicular to the longitudinal movable sliding shaft, and the longitudinal movable sliding shaft is slidably connected to a longitudinal movable bracket for being fixedly connected to the transverse movable sliding shaft;

[0019] Wherein, the longitudinal movable sliding axis is parallel to the longitudinal coordinate axis;

[0020] The transverse movable sliding shaft is slidably connected to a transverse movable bracket, and a positioning base mounting groove is provided on the top of the transverse movable bracket, which is used for plugging and unplugging with the platform quick installation positioning block at the lower part of the fixed platform, and the transverse movable bracket is fixedly connected with a positioning pointer on the side of the positioning mark area, which is used for the correspondence between the transverse coordinate axis and the longitudinal coordinate axis, so that the coordinate point formed by the intersection of the transverse coordinate axis and the longitudinal coordinate axis corresponds to the socket.

[0021] Furthermore, the upper surface of the fixed platform is provided with the circular embedded structure that engages with the circular shell of the connector core body, and the inner wall of the circular embedded structure is fixedly connected with a core direction positioning block, which cooperates with the positioning groove of the inner core of the connector core.

[0022] Furthermore, the chassis includes a rotating chassis and a circular fixed chassis concentric with the rotating chassis, and the rotating chassis is rotatably connected to the circular fixed chassis via a shaft.

[0023] In the above technical solution, the utility model provides a needle feeding device based on the base to locate the connector hole position, which has the following beneficial effects:

[0024] 1) Compared with the prior art, the needle feeding device based on the base for positioning the connector hole of the utility model has changed the working method, from the previous working method in which the operator used a clamping tool to feed the needle to the use of this device, through which the vertical needle feeding structure that can be raised and lowered and hoisted on the top of the support arm is coupled with the connecting terminal and the needle is fed vertically, the position of the connector core is adjusted by the platform coordinate adjustment structure on the chassis, and the plug-in position of the connector core is determined according to the position of the positioning pointer in the positioning mark area for the needle feeding operation, so as to avoid directly observing the plug-in position, when the connecting terminal is inserted into multiple places, blocking the plug-in position and affecting the insertion success rate, thereby improving work efficiency and reducing the labor intensity of personnel, and reducing the operation that was previously completed by two personnel to one operator independently.

[0025] 2) Compared with the prior art, the needle feeding device based on the base positioning connector hole of the utility model improves the original operation method. After the needle feeding positioning process is transformed from manual identification control to matching the fixed platform of the corresponding model, the needle position is matched by the method of precise positioning of the coordinates of the positioning identification area, thereby improving the operation method, enhancing the stability during operation, and increasing the efficiency by more than 50%. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0027] Figure 1 is a schematic diagram of the connector structure;

[0028] Figure 2 It is a schematic diagram of the structure of the connection terminal;

[0029] Figure 3 It is a schematic diagram of the overall structure of the needle feeding device based on the base positioning connector hole position disclosed in the utility model;

[0030] Figure 4 It is a schematic diagram of the main body of the needle feeding device disclosed in the utility model based on the base positioning connector hole position;

[0031] Figure 5 It is a schematic diagram of the structure of the fixed platform of the needle feeding device based on the base positioning connector hole position disclosed in the utility model;

[0032] Figure 6 This is a schematic diagram of the use state of the needle feeding device based on the base positioning connector hole disclosed in the utility model;

[0033] Figure 7 This is a second schematic diagram of the use state of the needle feeding device based on the base positioning connector hole disclosed in the utility model;

[0034] Figure 8 It is a schematic diagram of the use status of the needle feeding device based on the base positioning connector hole position disclosed by the utility model.

[0035] Description of prior art reference numerals:

[0036] Connector core 2; inner core 2-1; round shell 2-2; jack 2-1-2; positioning groove 2-1-3;

[0037] Wiring terminal 4; terminal front end 4-1; annular protrusion 4-2; crimping position 4-3; wire 4-4;

[0038] Description of the accompanying drawings of the present utility model:

[0039] Device body 1; longitudinal support arm 1-1; transverse support arm 1-2; vertical needle feeding structure 1-3; arc-shaped needle feeding port 1-3-1; rocker 1-4; fixed bracket 1-5; longitudinal movable bracket 1-6; longitudinal movable sliding shaft 1-7; transverse movable sliding shaft 1-8; transverse movable bracket 1-9; positioning base mounting groove 1-9-1; rotating chassis 1-10; circular fixed chassis 1-11; positioning pointer 1-12; positioning identification area 1-13;

[0040] Fixed platform 3; circular embedded structure 3-1; core insertion direction positioning block 3-2; platform quick installation positioning block 3-3. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0042] See also Figure 3-5 As shown;

[0043] The utility model discloses a needle feeding device for positioning a connector hole based on a base, comprising: a device body 1, a fixing platform 3;

[0044] The fixed platform 3 is used to support the connector core 2;

[0045] The device body 1 has a chassis and a support arm fixedly connected to one side of the chassis. Specifically, the support arm is an inverted L-shaped structure, and a vertical needle feeding structure 1-3 that can be raised and lowered is hoisted on the top of the support arm;

[0046] Wherein, a positioning mark area 1-13 is arranged at the upper part of the chassis corresponding to the position of the vertical needle feeding structure 1-3, and the positioning mark area 1-13 has a horizontal coordinate axis and a vertical coordinate axis, and the horizontal coordinate axis and the vertical coordinate axis are staggered to form a coordinate point; and

[0047] A platform coordinate adjustment structure, the platform coordinate adjustment structure can be displaced along the transverse coordinate axis and the longitudinal coordinate axis, the upper part of the platform coordinate adjustment structure is detachably connected to a fixed platform 3, and the fixed platform 3 is provided with a circular embedded structure 3-1 engaged with the connector core 2;

[0048] Among them, the vertical needle feeding structure 1-3 is provided with an arc-shaped needle feeding port 1-3-1, which is coupled with the connecting terminal 4 through the arc-shaped needle feeding port 1-3-1. Therefore, in the working state, the vertical needle feeding structure 1-3 is controlled to produce a vertical unchanged downward displacement, and the lateral and longitudinal displacements of the connector core fixing platform 3 are accurately judged by the pointing of the positioning pointer 1-12 of the platform coordinate adjustment structure in the positioning identification area 1-13, so as to determine the needle feeding position of the arc-shaped needle feeding port 1-3-1 of the needle feeding structure 1-3.

[0049] See also Figure 4 As shown:

[0050] Preferably, the support arm comprises a longitudinal support arm 1-1 and a transverse support arm 1-2;

[0051] The bottom end of the longitudinal support arm 1-1 is fixedly connected to the chassis;

[0052] One end of the transverse support arm 1-2 can be mounted on the longitudinal support arm 1-1 at any height, and the other end can be installed with a vertical needle feeding structure 1-3 in a lifting manner, and one side of the transverse support arm 1-2 is rotatably connected to a rocker 1-4 that drives the vertical needle feeding structure 1-3 to rise and fall;

[0053] The bottom end of the vertical needle feeding structure 1-3 has a cone portion, and the cone portion is provided with an arc-shaped needle feeding port 1-3-1 with one side being open, and is coupled with the crimping position 4-3 of the connection terminal 4 and the wire 4-4 through the arc-shaped needle feeding port 1-3-1.

[0054] Specifically, the vertical needle feeding structure 1-3 is controlled by the rocker 1-4 to produce a downward displacement with unchanged vertical displacement. The transmission between the rocker 1-4 and the vertical needle feeding structure 1-3 can be a transmission between a hand wheel and a spindle in a small-sized table drilling machine in the prior art, or a gear rack transmission form in other prior arts that can realize the rotation of the rocker 1-4 and the lifting and lowering of the vertical needle feeding structure 1-3;

[0055] The transverse support arm 1-2 and the longitudinal support arm 1-1 are in a vertical structure. The fixed position of the transverse support arm 1-2 on the longitudinal support arm 1-1 is adjustable. The positioning can be performed by fixing the transverse support arm 1-2 and the longitudinal support arm 1-1 by the top screw in the prior art. When in use, the up and down displacement of the transverse support arm 1-2 is adjusted according to needs, thereby driving the vertical needle feeding structure 1-3 to move. Combined with the rocker 1-4, the displacement range of the needle feeding structure 1-3 can be expanded.

[0056] See also Figure 4 As shown,

[0057] Preferably, the platform coordinate adjustment structure includes a longitudinal movable sliding shaft 1-7 arranged in parallel on both sides of the positioning mark area 1-13, and a transverse movable sliding shaft 1-8 arranged perpendicular to the longitudinal movable sliding shaft 1-7, and the longitudinal movable sliding shaft 1-7 is slidably connected to a longitudinal movable bracket 1-6 for fixedly connecting with the transverse movable sliding shaft 1-8;

[0058] Wherein, the longitudinal movable sliding axis 1-7 is parallel to the longitudinal coordinate axis;

[0059] The transverse moving sliding shaft 1-8 is slidably connected with a transverse moving bracket 1-9, and a positioning base mounting groove 1-9-1 is provided on the top of the transverse moving bracket 1-9, which is used for plugging and unplugging with the platform quick installation positioning block 3-3 at the lower part of the fixed platform 3. The transverse moving bracket 1-9 is located on the side of the positioning identification area 1-13 and is fixedly connected with a positioning pointer 1-12, which is used for the correspondence between the transverse coordinate axis and the longitudinal coordinate axis, so that the coordinate point formed by the staggered transverse coordinate axis and the longitudinal coordinate axis corresponds to the socket 2-1-2.

[0060] In a specific embodiment, the platform coordinate adjustment structure includes a transverse movable bracket 1-9, a positioning base mounting groove 1-9-1, a transverse movable sliding shaft 1-8, a longitudinal movable sliding shaft 1-7, a longitudinal movable bracket 1-6, and a fixed bracket 1-5;

[0061] Four fixed brackets 1-5 fix the entire platform coordinate adjustment structure on the rotating chassis 1-10, and drive the transverse moving sliding shaft 1-8, the transverse moving bracket 1-9, the positioning base mounting slot 1-9-1, and the positioning pointer 1-12 to generate longitudinal displacement in the coordinate area of ​​the rotating chassis 1-10 by controlling the longitudinal moving bracket 1-6. The transverse moving bracket 1-9 is controlled to generate displacement on the transverse moving sliding shaft 1-8, thereby driving the positioning pointer 1-12 to generate transverse displacement in the coordinate area of ​​the rotating chassis 1-10. The platform coordinate adjustment structure of the device adopts a sliding shaft transverse and longitudinal manual drive structure, and can also adopt motor control, gear, rack drive and other structures to generate the same displacement structure;

[0062] The positioning base installation groove 1-9-1 acts on the platform quick installation groove 3-3 on the connector core fixing platform 3 to engage with each other, so as to achieve the purpose of converting positioning platforms of different models.

[0063] See also Figure 5 As shown:

[0064] Preferably, a circular embedded structure 3-1 is provided on the upper surface of the fixed platform 3 and engages with the round shell 2-2 of the connector core 2. A core direction positioning block 3-2 is fixedly connected to the inner wall of the circular embedded structure 3-1, and the core direction positioning block 3-2 cooperates with the positioning groove 2-1-3 of the inner core 2-1 of the connector core 2.

[0065] In a specific embodiment, the fixed platform 3 is made according to connector cores of the same type with different specifications, and the regular arrangement of the jacks 2-1-2 on the inner core 2-1 in the connector core 2 is summarized and summarized with the positioning coordinates of the positioning identification area 1-13. Finally, the position of the jacks 2-1-2 of the inner core 2-1 in the jack connector core 2 corresponds to the positioning coordinates of the positioning identification area 1-13, and then the different jacks 2-1-2 on the inner core 2-1 in the connector core 2 corresponding to the needle arc needle feeding port 1-3-1 are judged by the positioning coordinates pointed by the positioning pointer 1-12. When in use, the connector core fixing platform 3 of the corresponding model is replaced according to the connectors of the same type with different specifications and sizes.

[0066] See also Figure 4 As shown:

[0067] Preferably, the chassis includes a rotating chassis 1-10 and a circular fixed chassis 1-11 concentric with the rotating chassis 1-10, and the rotating chassis 1-10 is rotationally connected to the circular fixed chassis 1-11 via an axis, that is, the rotating chassis 1-10 rotates 360° on the circular fixed chassis 1-11.

[0068] See also Figure 6-8 As shown, a method for feeding needles using the needle feeding device based on the base to locate the connector hole position comprises the following steps:

[0069] Step 1: Select the connector insert fixing platform 3;

[0070] See also Figure 6 As shown, a matching connector ferrule fixing platform 3 is selected according to different types of connector core bodies 2, and the platform quick installation positioning block 3-3 of the connector ferrule fixing platform 3 is embedded into the positioning base installation groove 1-9-1 of the device body 1. After the installation is completed, ensure that the ferrule direction positioning block 3-2 of the connector ferrule fixing platform 3 is in the same direction as the positioning pointer 1-12 of the device body 1;

[0071] Step 2: Install the connector core 2;

[0072] See also Figure 7 As shown, the round shell 2-2 of the connector core body 2 is engaged with the round embedding structure 3-1 of the connector plug fixing platform 3, so that the positioning groove 2-1-3 on the edge circumference of the inner core 2-1 is engaged with the plug direction positioning block 3-2 of the connector plug fixing platform 3;

[0073] Step 3: Determine the position of the jack 2-1-2 of the connector core 2 by observing the position of the positioning pointer 1-12 in the positioning mark area 1-13 to perform the needle feeding operation;

[0074] See also Figure 8 As shown, the annular surface of the crimping position 4-3 of the connecting terminal 4 is overlapped and embedded with the arc surface of the arc-shaped needle feeding port 1-3-1 in the vertical needle feeding structure 1-3, and the top of the arc-shaped needle feeding port 1-3-1 is stuck on the annular protrusion 4-2 of the connecting terminal 4, and the wire 4-4 of the connecting terminal 4 extends from the bevel of the arc-shaped needle feeding port 1-3-1 away from the connector core 2. When inserting the connecting terminal 4, first, the position of the socket 2-1-2 of the connector core 2 is determined by observing the position of the positioning pointer 1-12 in the positioning identification area 1-13, and secondly, the rocker 1-4 is driven to control the vertical needle feeding structure 1-3 to produce a vertical displacement downward, and the arc-shaped needle feeding port 1-3-1 drives the connecting terminal 4 to produce a downward displacement, and the terminal front end 4-1 of the connecting terminal 4 is aligned with the socket 2-1-2 of the connector core 2, and the rocker 1-4 is further controlled to insert the connecting terminal 4 into the socket 2-1-2 to complete the insertion of the connector pin.

[0075] In the above technical solution, the utility model provides a needle feeding device based on the base to locate the connector hole position, which has the following beneficial effects:

[0076] 1) The device can improve the accuracy and efficiency of the connector hole needle feeding, and adjust the coordinate positioning through the platform coordinate adjustment structure to ensure that the vertical needle feeding structure can accurately and quickly complete the needle feeding steps;

[0077] 2) When there are many wire harnesses, the chassis can be rotated to achieve a reasonable layout of needle positions and reduce wire harness crossing;

[0078] 3) The device clamps the terminal through a vertical needle feeding structure, which improves the stability of the terminal needle feeding, reduces the material loss caused by insufficient clamping control force of the manual clamp and quality problems caused by improper needle feeding operation, saves production costs and improves product quality.

[0079] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A needle feeding device based on a base to locate the connector hole, characterized in that: include: A device body (1) and a fixing platform (3) for supporting a connector core (2); The device body (1) comprises a chassis and a support arm fixedly connected to one side of the chassis; A vertical needle feeding structure (1-3) capable of being raised and lowered is suspended at the top of the support arm; Wherein, a positioning identification area (1-13) having a horizontal coordinate axis and a vertical coordinate axis arranged alternately is arranged on the upper part of the chassis corresponding to the position of the vertical needle feeding structure (1-3); and A platform coordinate adjustment structure capable of displacement along the transverse coordinate axis and the longitudinal coordinate axis, the fixed platform (3) being detachably connected to the upper portion of the platform coordinate adjustment structure, the fixed platform (3) being provided with a circular embedded structure (3-1) engaged with the connector core (2); The vertical needle feeding structure (1-3) is provided with an arc-shaped needle feeding opening (1-3-1) for coupling with the connection terminal (4), so that the vertical needle feeding structure (1-3) descends and drives the connection terminal (4) to be inserted into the insertion hole (2-1-2) of the connector core (2).

2. A needle feeding device based on base positioning connector hole according to claim 1, characterized in that ； The support arm comprises a longitudinal support arm (1-1) and a transverse support arm (1-2); The bottom end of the longitudinal support arm (1-1) is fixedly connected to the chassis; One end of the transverse support arm (1-2) can be mounted on the longitudinal support arm (1-1) at any height, and the other end can be mounted with the vertical needle feeding structure (1-3) in a lifting manner, and one side of the transverse support arm (1-2) is rotatably connected to a rocker (1-4) for driving the vertical needle feeding structure (1-3) to rise and fall; The bottom end of the vertical needle feeding structure (1-3) has a cone portion, and the cone portion is provided with an arc-shaped needle feeding opening (1-3-1) with one side being an open structure, and is coupled with the crimping position (4-3) of the connection terminal (4) and the wire (4-4) through the arc-shaped needle feeding opening (1-3-1).

3. The needle feeding device according to claim 1 for positioning the connector hole based on the base, characterized in that ； The platform coordinate adjustment structure comprises a longitudinal movable sliding shaft (1-7) arranged in parallel on both sides of the positioning mark area (1-13), and a transverse movable sliding shaft (1-8) arranged perpendicular to the longitudinal movable sliding shaft (1-7), wherein the longitudinal movable sliding shaft (1-7) is slidably connected to a longitudinal movable bracket (1-6) for being fixedly connected to the transverse movable sliding shaft (1-8); Wherein, the longitudinal movable sliding axis (1-7) is parallel to the longitudinal coordinate axis; The transverse movable sliding shaft (1-8) is slidably connected to a transverse movable bracket (1-9); a positioning base mounting groove (1-9-1) is provided on the top of the transverse movable bracket (1-9) for plugging and unplugging with a platform quick mounting positioning block (3-3) at the bottom of the fixed platform (3); a positioning pointer (1-12) is fixedly connected to the transverse movable bracket (1-9) on the side of the positioning mark area (1-13) for making the transverse coordinate axis correspond to the longitudinal coordinate axis, so that a coordinate point formed by the intersection of the transverse coordinate axis and the longitudinal coordinate axis corresponds to the plug hole (2-1-2).

4. The needle feeding device according to claim 3 for positioning the connector hole based on the base, characterized in that ； The upper surface of the fixed platform (3) is provided with the circular embedded structure (3-1) which is engaged with the circular shell (2-2) of the connector core (2); the inner wall of the circular embedded structure (3-1) is fixedly connected with a core insertion direction positioning block (3-2), and the core insertion direction positioning block (3-2) is matched with the positioning groove (2-1-3) of the inner core (2-1) of the connector core (2).

5. The needle feeding device based on the base for locating the connector hole according to claim 1, characterized in that ； The chassis comprises a rotating chassis (1-10) and a circular fixed chassis (1-11) concentric with the rotating chassis (1-10); the rotating chassis (1-10) is rotationally connected to the circular fixed chassis (1-11) via a shaft.

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