Generator frame drilling device for generator machining

Abstract

The invention discloses a generator frame drilling device for generator machining, and relates to the technical field of drilling devices.The generator frame drilling device comprises a drilling equipment table, a driving sliding plate is fixedly mounted at one end of the top of the drilling equipment table, a sliding groove is formed in the surface of the driving sliding plate, and a lifting plate is movably mounted in the sliding groove; a telescopic plate is fixedly connected to the interior of the lifting plate, a drill rod is movably connected to one end of the telescopic plate in a sleeving mode, and a driving motor is movably installed at the top of the drill rod. Through mutual cooperation of the machining table, an electric push rod, a clamping plate, an auxiliary plate, a springback plate, a reset elastic column and a movable column, the problems that due to different models and outer contours of generator frames, stable clamping and fixing are not facilitated, and stable machining of a drilling device is likely to be achieved are solved, the telescopic clamping function is achieved, and the machining efficiency is improved. And in cooperation with the tension of a rebound plate and the rebound resilience of a buffer elastic column, stable clamping of the device is facilitated, and convenient machining of the device is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of drilling devices, and in particular to a generator frame drilling device used for generator machining. Background Art

[0002] The generator includes a frame, and the frame is used for fixing and installing the generator. The frame is generally made of a plurality of rods. In order to better fix the generator, a plurality of through holes are often required to be opened on the frame for screw fastening. Depending on the installation environment, the plurality of through holes need to be arranged at a preset distance interval, so that when the generator is processed, a drilling device is required to process the generator frame. Therefore, a generator frame drilling device for generator processing is proposed.

[0003] In the existing technical solution, a publication number: CN104338965B is proposed, which is a generator frame drilling auxiliary device, including a first limit block and a second limit hole. The first limit block includes a long strip-shaped bottom plate and two side plates. A plurality of guide holes spaced at preset distances from each other are provided on the bottom plate, and the bottom plate and the two side plates form a first receiving groove extending along the bottom plate. The second limit block is provided with a second receiving groove connected to the first receiving groove. Two mutually perpendicular rods on the generator frame are respectively inserted into the first receiving groove and the second receiving groove.

[0004] In order to solve the problem that in order to arrange the through holes at preset intervals, the operator must measure the distance before drilling the next through hole, thereby reducing the processing efficiency, the prior art uses a plurality of guide holes spaced at preset distances from each other, so that the through holes can be arranged at the same distance without measuring when drilling. However, the generator frames may have different models and different outer contours, which is not conducive to stable clamping and fixing, and may easily lead to the problem that the drilling device cannot perform stable processing. Summary of the invention

[0005] The object of the present invention is to provide a generator frame drilling device for generator machining to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: A generator frame drilling device for generator processing comprises a drilling equipment table, a driving slide is fixedly installed at one end of the top of the drilling equipment table, a slide groove is provided on the surface of the driving slide groove, a lifting plate is movably installed inside the slide groove, a telescopic plate is fixedly connected inside the lifting plate, a drill rod is movably sleeved on one end of the telescopic plate, and a driving motor is movably installed on the top of the drill rod.

[0007] A processing table is arranged at the other end of the top of the drilling equipment table, electric push rods are movably installed on both sides of the processing table, and a clamping mechanism is fixedly connected to the other end of the electric push rods.

[0008] A processing groove is provided in the middle of the processing table, a slide rail is provided on one side of the inner wall of the processing groove, a lifting platform is movably installed on the outer side of the slide rail, pushing mechanisms are provided on both sides of the lifting platform, and a discharge port is provided at the bottom of the inner cavity of the processing groove.

[0009] A further improvement of the technical solution of the present invention is that the clamping mechanism includes a clamping plate, an auxiliary plate is movably installed on the surface of the clamping plate, movable columns are movably installed at both ends of the surface of the clamping plate, and a rebound plate is movably installed on the outer side of the movable column.

[0010] By adopting the above technical solution, the clamping and fixing function is achieved through the cooperation of the clamping plate, the auxiliary plate, the movable column and the rebound plate.

[0011] A further improvement of the technical solution of the present invention is that: one side of the rebound plate is movably connected to a reset spring column, and the other end of the reset spring column is movably installed inside the clamping plate.

[0012] By adopting the above technical solution, the rebound plate and the reset spring column cooperate with each other to achieve the function of rebound buffering.

[0013] A further improvement of the technical solution of the present invention is that buffer columns are provided at both ends of the inner side of the auxiliary plate, a connecting block is provided at the other end of the buffer column, and the side of the connecting block away from the buffer column is fixedly installed inside the clamping plate.

[0014] A further improvement of the technical solution of the present invention is that: a compression pad is fixedly installed in the middle of the surface of the connecting block, a pressure spring is arranged inside the compression pad, one end of the pressure spring is movably connected to the airbag cushion, and a compression plate is fixedly installed on the other side of the airbag cushion, and one side of the compression plate is fixedly installed on one side of the auxiliary plate.

[0015] By adopting the above technical solution, the extrusion pad, pressure spring, airbag pad and extrusion plate cooperate with each other to achieve the function of buffering protection, which facilitates stable clamping of the device.

[0016] A further improvement of the technical solution of the present invention is that a movable groove is opened on the other side of the inner wall of the processing groove, an electric sliding column is movably installed inside the movable groove, a movable block is movably installed outside the electric sliding column, and a cleaning push plate is fixedly connected to one side of the movable block.

[0017] By adopting the above technical solution, the function of sliding and pushing materials is achieved through the cooperation of the moving groove, the electric sliding column, the movable block and the cleaning push plate.

[0018] A further improvement of the technical solution of the present invention is that the pushing mechanism includes a telescopic rod, a cable is arranged on the outside of the telescopic rod, the other end of the telescopic rod is fixedly connected to a pushing plate, a magnetic block is movably installed inside the pushing plate, and the back of the magnetic block is linearly connected to the cable.

[0019] By adopting the above technical solution, the telescopic rod, the cable, the push plate and the magnetic block cooperate with each other to achieve the function of telescopically pushing the waste out of the processing tank.

[0020] A further improvement of the technical solution of the present invention is that adjustment grooves are opened on both sides of the inner cavity of the processing groove, a driving block is fixedly installed at one end of the adjusting groove, a connecting column is provided at one end of the driving block, and an inclined baffle is fixedly installed on the outer side of one end of the driving block.

[0021] By adopting the above technical solution, the function of rotation adjustment is achieved through the cooperation between the driving block, the connecting column and the inclined baffle.

[0022] A further improvement of the technical solution of the present invention is that a gear block is arranged at one end of the connecting column away from the inclined baffle, a clamping plate is meshed on the side of the gear block, and the bottom of the clamping plate is movably mounted on the bottom of the inner cavity of the adjustment groove.

[0023] By adopting the above technical solution, the gear block and the clamping plate cooperate with each other to achieve the function of limiting clamping.

[0024] A further improvement of the technical solution of the present invention is that a moving plate is fixedly connected to one side of the clamping plate, a moving block is arranged at the other end of the moving plate, a telescopic column is movably installed at one end of the moving block, and the other end of the telescopic column is arranged inside the adjusting groove.

[0025] Due to the adoption of the above technical solution, the present invention has the following technical advances compared with the prior art: The present invention provides a generator frame drilling device for generator processing. Through the cooperation of a processing table, an electric push rod, a clamping plate, an auxiliary plate, a rebound plate, a reset spring column and a movable column, the problem that different models and outer contours of the generator frame are not conducive to stable clamping and fixing, which easily leads to the inability of the drilling device to process stably is solved. The function of telescopic clamping is achieved, and the tension of the rebound plate and the resilience of the buffer spring column are combined to facilitate stable clamping of the device, which is conducive to convenient processing of the device.

[0026] The present invention provides a generator frame drilling device for generator processing. Through the cooperation of a clamping plate, a connecting block, a buffer column, an extrusion pad, a pressure spring, an airbag pad and an extrusion plate, the problem that the drilling mechanism is prone to generate vibration force during processing, resulting in reduced processing quality of the drilling device, is solved. The function of buffering protection is achieved, the stability of the clamping mechanism is increased, and the stable processing of the device is facilitated, thereby improving the processing quality of the device.

[0027] The present invention provides a generator frame drilling device for generator processing. Through the cooperation of a movable groove, an electric sliding column, a movable block, a cleaning push plate, a telescopic rod, a cable, a push plate and a magnetic block, the problem that a large amount of waste material is left in the processing area during processing by the drilling mechanism, thereby affecting the convenient processing of the device next time, is solved. The function of sliding and pushing is achieved, and then the magnetic block and the cable are energized to generate magnetism, which absorbs fine iron waste material, facilitates the push plate to push out the processing groove, and is beneficial to the device's function of conveniently cleaning waste material.

[0028] The present invention provides a generator frame drilling device for generator processing. The inclined baffle, connecting column, gear block, driving block, clamping plate, movable plate, movable block and telescopic column cooperate with each other to solve the problem that when too much waste is accumulated, the waste is easily caused to overflow and scatter outward, thereby affecting the convenient processing of a cleaning mechanism. The function of flipping and adjusting the inclined baffle is achieved, and the shielding function of the inclined baffle when flipped upward is utilized to block the waste from scattering outward, which is beneficial to the anti-overflow function of the device and facilitates the device to conveniently push out the waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is an enlarged view of point A of the present invention; Figure 3 It is a schematic diagram of the structure of the clamping plate of the present invention; Figure 4 It is a schematic diagram of the structure of the processing table of the present invention; Figure 5 It is a schematic diagram of the processing tank structure of the present invention; Figure 6 It is a schematic diagram of the structure of the inclined baffle of the present invention; Figure 7 It is an enlarged view of B of the present invention.

[0030] In the figure: 1, drilling equipment table; 2, driving slide plate; 3, slideway; 4, lifting plate; 5, telescopic plate; 6, drilling rod; 7, driving motor; 8, processing table; 81, electric push rod; 82, clamping plate; 821, connecting block; 822, buffer column; 823, extrusion pad; 824, pressure spring; 825, airbag cushion; 826, extrusion plate; 83, auxiliary plate; 84, rebound plate; 85, reset spring column; 86, movable column; 871, moving slot; 872, electric slide column; 873, movable block; 874, cleaning push plate; 88, discharge port; 881, adjustment slot; 882, inclined baffle; 883, connecting column; 884, gear block; 885, drive block; 886, clamping plate; 887, moving plate; 888, moving block; 889, telescopic column; 9, processing slot; 91, slide rail; 92, lifting platform; 93, telescopic rod; 94, cable; 95, push plate; 96, magnetic block. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with embodiments: Example

[0032] like Figure 1-7 As shown, the present invention provides a generator frame drilling device for generator processing, comprising a drilling equipment platform 1, a driving slide plate 2 is fixedly installed at one end of the top of the drilling equipment platform 1, a slide groove 3 is opened on the surface of the driving slide plate 2, a lifting plate 4 is movably installed inside the slide groove 3, a telescopic plate 5 is fixedly connected inside the lifting plate 4, a drill rod 6 is movably sleeved on one end of the telescopic plate 5, a driving motor 7 is movably installed on the top of the drill rod 6, a processing table 8 is arranged at the other end of the top of the drilling equipment platform 1, electric push rods 81 are movably installed on both sides of the processing table 8, a clamping mechanism is fixedly connected to the other end of the electric push rod 81, the clamping mechanism comprises a clamping plate 82, an auxiliary plate 83 is movably installed on the surface of the clamping plate 82, movable columns 86 are movably installed at both ends of the surface of the clamping plate 82, a rebound plate 84 is movably installed on the outer side of the movable column 86, and a rebound plate 84 is movably installed on the outer side of the rebound plate 84. A reset spring 85 is movably connected to one side of the plate 84, and the other end of the reset spring 85 is movably installed inside the clamping plate 82. The workpiece is placed inside the processing table 8, and the electric push rod 81 is used to telescopically move to drive the clamping plate 82 to clamp the workpiece. While clamping, the rebound plate 84 is forced to rebound and squeeze on the reset spring 85. The rebound force of the reset spring 85 is used for buffering clamping, and the tension of the rebound plate 84 is used to facilitate the clamping mechanism to clamp the workpiece conveniently. Then, the lifting platform 92 is driven by electricity to slide on the outside of the slide rail 91. The height of the lifting platform 92 is adjusted to adjust the height of the workpiece, which facilitates the convenient processing of the device. Then, the lifting plate 4 is driven by electricity to drive the telescopic plate 5 to slide on the surface of the driving slide plate 2, and then the driving motor 7 drives the drill rod 6 to rotate and drill, so as to achieve the function of convenient processing. Example

[0033] like Figure 1-7 As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, buffer columns 822 are provided at both ends of the inner side of the auxiliary plate 83, and a connecting block 821 is provided at the other end of the buffer column 822. The side of the connecting block 821 away from the buffer column 822 is fixedly installed inside the clamping plate 82, and a compression pad 823 is fixedly installed in the middle of the surface of the connecting block 821. A pressure spring 824 is provided inside the compression pad 823. One end of the pressure spring 824 is movably connected to an airbag cushion 825, and the other side of the airbag cushion 825 is fixedly installed with a compression spring 824. Plate 826, one side of the extrusion plate 826 is fixedly installed on one side of the auxiliary plate 83, and the workpiece is clamped by the clamping mechanism, pushing the auxiliary plate 83 to extrude the buffer column 822, and the elasticity of the buffer column 822 is used to buffer the force. While the auxiliary plate 83 is squeezed, the extrusion plate 826 is pushed to press the airbag cushion 825, so that the airbag cushion 825 compresses the pressure spring 824 to achieve the function of buffering and rebounding, and then the airbag cushion 825 is used to compress the internal air to achieve the buffering force, which is convenient for the device to buffer and clamp the workpiece and increase the protection function of the device. Example

[0034] like Figure 1-7 As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, a processing groove 9 is opened in the middle of the processing table 8, a slide rail 91 is arranged on one side of the inner wall of the processing groove 9, a lifting platform 92 is movably installed on the outer side of the slide rail 91, and a pushing mechanism is arranged on both sides of the lifting platform 92. A discharge port 88 is opened at the bottom of the inner cavity of the processing groove 9, and the pushing mechanism comprises a telescopic rod 93, a cable 94 is arranged on the outer side of the telescopic rod 93, a pushing plate 95 is fixedly connected to the other end of the telescopic rod 93, a magnetic block 96 is movably installed inside the pushing plate 95, and the back side of the magnetic block 96 is linearly connected to the cable 94, a movable groove 971 is opened on the other side of the inner wall of the processing groove 9, an electric sliding column 872 is movably installed inside the movable groove 971, a movable block 873 is movably installed on the outer side of the electric sliding column 872, and one side of the movable block 873 A cleaning push plate 874 is fixedly connected. When the generator frame is processed through the drilling mechanism, debris is easily left on the surface of the lifting platform 92. The electric sliding column 872 is used to drive the movable block 873 to slide. When the movable block 873 moves, it drives the cleaning push plate 874 to slide on the surface of the lifting platform 92. The mobility is used to achieve the function of pushing the waste to one side, so that the waste moves to the two sides of the processing groove 9, and then falls from the gaps on both sides to the bottom of the processing groove 9, and then the telescopic rod 93 is telescopically moved to drive the push plate 95 to move, pushing the waste to the discharge port 88, so that the device can push the waste to both sides to achieve the function of centralized waste cleaning. While pushing the material, the cable 94 is energized to drive the magnetic block 96 to absorb small iron waste, so that the device can clean the waste conveniently and increase the convenience of the device. Example

[0035] like Figure 1-7 As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, adjusting grooves 881 are opened on both sides of the inner cavity of the processing groove 9, a driving block 885 is fixedly installed at one end of the adjusting groove 881, a connecting column 883 is provided at one end of the driving block 885, an oblique baffle 882 is fixedly installed on the outer side of one end of the driving block 885, a gear block 884 is provided at one end of the connecting column 883 away from the oblique baffle 882, a side of the gear block 884 is meshed with a clamping plate 886, the bottom of the clamping plate 886 is movably installed at the bottom of the inner cavity of the adjusting groove 881, a moving plate 887 is fixedly connected to one side of the clamping plate 886, a moving block 888 is provided at the other end of the moving plate 887, a telescopic column 889 is movably installed at one end of the moving block 888, and the other end of the telescopic column 889 It is arranged inside the adjusting groove 881, and the waste is pushed to both sides by the pushing mechanism, and falls to the bottom of the processing groove 9 along the gap. While falling, the inclination of the inclined baffle plate 882 is utilized to facilitate the convenient falling of the waste. When the pushing mechanism stops, the driving block 885 is utilized to electrically drive the connecting column 883 to rotate, so that the inclined baffle plate 882 is flipped upward to achieve the function of semi-arc rotation, and then the telescopic column 889 is retracted and moved to pull the moving block 888 to slide, and the moving block 888 drives the moving plate 887 and the clamping plate 886 to move, so that the clamping plate 886 is clamped on the side of the gear block 884 to achieve the function of clamping limit, and the inclined baffle plate 882 is flipped upward to facilitate the device to block the waste and prevent the waste from overflowing, which is conducive to the convenient collection of waste by the device.

[0036] The working principle of the generator frame drilling device used for generator processing is described in detail below.

[0037] like Figure 1-7As shown, the workpiece is placed inside the processing table 8, and the electric push rod 81 is used to telescopically move to drive the clamping plate 82 to clamp the workpiece. While clamping, the rebound plate 84 is forced to rebound and squeezed on the reset spring column 85. The rebound force of the reset spring column 85 is used for buffering clamping, and the tension of the rebound plate 84 is used to facilitate the clamping mechanism to clamp the workpiece conveniently. Then, the lifting platform 92 is driven by electricity to slide on the outside of the slide rail 91. The height of the lifting platform 92 is adjusted to adjust the height of the workpiece, which is convenient for the device to process conveniently. Then, the lifting plate 4 is driven by electricity to drive the telescopic plate 5 to slide on the surface of the driving slide plate 2, and then the driving motor 7 drives the drill rod 6 to rotate Drilling is performed to achieve the function of convenient processing. The clamping mechanism clamps the workpiece and pushes the auxiliary plate 83 to squeeze the buffer column 822. The elasticity of the buffer column 822 is used to buffer the force. While the auxiliary plate 83 is squeezed, the squeezing plate 826 is pushed to press the airbag cushion 825, so that the airbag cushion 825 compresses the pressure spring 824 to achieve the function of buffering and rebounding. The airbag cushion 825 is then used to compress the internal air to achieve the buffering force, which is convenient for the device to buffer and clamp the workpiece and increase the protection function of the device. When the generator frame is processed through the drilling mechanism, it is easy to leave debris on the surface of the lifting platform 92. The electric sliding column 872 is used to drive the movable block 873 to slide. When the movable block 873 moves, it drives the cleaning push plate 874 to slide on the surface of the lifting platform 92, and uses the mobility to achieve the function of pushing the waste to one side, so that the waste moves to the two sides of the processing groove 9, and then falls from the gaps on both sides to the bottom of the processing groove 9, and then the telescopic rod 93 is telescopically moved to drive the push plate 95 to move, pushing the waste to move toward the discharge port 88, so that the device can push the waste to both sides to achieve the centralized waste cleaning function. While pushing the material, the cable 94 is energized to drive the magnetic block 96 to absorb small iron waste, so that the device can conveniently clean the waste and increase the convenience of the device. The push mechanism pushes the waste to both sides and falls along the gap to The bottom of the processing groove 9, while falling, utilizes the inclination of the inclined baffle plate 882 to facilitate the convenient falling of waste. When the pushing mechanism stops, the driving block 885 is used to electrically drive the connecting column 883 to rotate, so that the inclined baffle plate 882 is flipped upward to achieve the function of semi-arc rotation, and then the telescopic column 889 is retracted and moved to pull the moving block 888 to slide, and the moving block 888 drives the moving plate 887 and the clamping plate 886 to move, so that the clamping plate 886 is clamped on the side of the gear block 884 to achieve the function of clamping limit, and the inclined baffle plate 882 is flipped upward to facilitate the device to block the waste and prevent the waste from overflowing, which is conducive to the convenient collection of waste by the device.

[0038] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A generator frame drilling device for generator machining, comprising a drilling equipment table (1), characterized in that: A driving slide plate (2) is fixedly mounted on one end of the top of the drilling equipment platform (1); a slide groove (3) is provided on the surface of the driving slide plate (2); a lifting plate (4) is movably mounted inside the slide groove (3); a telescopic plate (5) is fixedly connected inside the lifting plate (4); a drill rod (6) is movably sleeved on one end of the telescopic plate (5); and a driving motor (7) is movably mounted on the top of the drill rod (6); A processing table (8) is provided at the other end of the top of the drilling equipment table (1), electric push rods (81) are movably mounted on both sides of the processing table (8), and a clamping mechanism is fixedly connected to the other end of the electric push rod (81); A processing groove (9) is provided in the middle of the processing table (8), a slide rail (91) is provided on one side of the inner wall of the processing groove (9), a lifting platform (92) is movably installed on the outer side of the slide rail (91), and pushing mechanisms are provided on both sides of the lifting platform (92), and a discharge port (88) is provided at the bottom of the inner cavity of the processing groove (9).

2. A generator frame drilling device for generator machining according to claim 1, characterized in that: The clamping mechanism comprises a clamping plate (82), an auxiliary plate (83) being movably mounted on the surface of the clamping plate (82), movable columns (86) being movably mounted at both ends of the surface of the clamping plate (82), and a rebound plate (84) being movably mounted on the outer side of the movable column (86).

3. A generator frame drilling device for generator machining according to claim 2, characterized in that: One side of the rebound plate (84) is movably connected to a reset spring column (85), and the other end of the reset spring column (85) is movably mounted inside the clamping plate (82).

4. A generator frame drilling device for generator machining according to claim 2, characterized in that: Buffer columns (822) are provided at both ends of the inner side of the auxiliary plate (83), a connecting block (821) is provided at the other end of the buffer column (822), and a side of the connecting block (821) away from the buffer column (822) is fixedly mounted inside the clamping plate (82).

5. A generator frame drilling device for generator machining according to claim 4, characterized in that: A compression pad (823) is fixedly mounted in the middle of the surface of the connection block (821), a pressure spring (824) is arranged inside the compression pad (823), one end of the pressure spring (824) is movably connected to an airbag pad (825), a compression plate (826) is fixedly mounted on the other side of the airbag pad (825), and one side of the compression plate (826) is fixedly mounted on one side of the auxiliary plate (83).

6. A generator frame drilling device for generator machining according to claim 1, characterized in that: A movable groove (871) is provided on the other side of the inner wall of the processing groove (9), an electric sliding column (872) is movably installed inside the movable groove (871), a movable block (873) is movably installed outside the electric sliding column (872), and a cleaning push plate (874) is fixedly connected to one side of the movable block (873).

7. A generator frame drilling device for generator machining according to claim 1, characterized in that: The pushing mechanism comprises a telescopic rod (93), a cable (94) is arranged on the outside of the telescopic rod (93), the other end of the telescopic rod (93) is fixedly connected to a pushing plate (95), a magnetic block (96) is movably installed inside the pushing plate (95), and the back side of the magnetic block (96) is linearly connected to the cable (94).

8. The generator frame drilling device for generator machining according to claim 1, characterized in that: Adjustment grooves (881) are provided on both sides of the inner cavity of the processing groove (9); a driving block (885) is fixedly mounted on one end of the adjusting groove (881); a connecting column (883) is provided on one end of the driving block (885); and an inclined baffle (882) is fixedly mounted on the outer side of one end of the driving block (885).

9. A generator frame drilling device for generator machining according to claim 8, characterized in that: A gear block (884) is provided at one end of the connecting column (883) away from the inclined baffle (882), a clamping plate (886) is meshed on the side of the gear block (884), and the bottom of the clamping plate (886) is movably mounted on the bottom of the inner cavity of the adjustment groove (881).

10. A generator frame drilling device for generator machining according to claim 9, characterized in that: A movable plate (887) is fixedly connected to one side of the clamping plate (886), a movable block (888) is provided at the other end of the movable plate (887), a telescopic column (889) is movably mounted at one end of the movable block (888), and the other end of the telescopic column (889) is arranged inside the adjustment slot (881).

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