Multidirectional adjusting and mounting mechanism for heavy part of grinding machine

Abstract

The invention discloses a multidirectional adjusting and mounting mechanism for heavy parts of a grinder, and particularly relates to the technical field of grinders, the multidirectional adjusting and mounting mechanism comprises a group of support slide rails I arranged on the front side and the rear side of a stand column respectively, a plurality of support plates I are arranged on the support slide rails I, limiting plates I are arranged on the support plates I, and a slide assembly is arranged on the support plates I; the sliding assembly comprises a plurality of mounting plates slidably arranged on the corresponding first supporting plates, and the mounting plates are used for supporting the corresponding driving assemblies. By arranging the assembling mechanism, the function of freely moving in the X-axis, Y-axis and Z-axis directions is provided for the driving assembly of the grinding machine, so that when the driving assembly of the grinding machine is overhauled and maintained, a grinding part above the grinding machine does not need to be disassembled, the driving assembly can be quickly and conveniently disassembled from the bottom of the grinding machine, and the working efficiency of the grinding machine is improved. And the maintenance difficulty of workers is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of grinding machine technology, and more specifically, to a multi-directional adjustment and mounting mechanism for a heavy-duty component of a grinding machine. Background Technology

[0002] A grinding machine is a high-precision machining device used to process the end faces of workpieces. It has wide applications in the semiconductor and integrated circuit, precision optics, and optoelectronic industries. Among them, double-sided grinding machines are highly favored by the market due to their ultra-precision and high efficiency.

[0003] The drive unit of a double-sided grinding machine is generally installed at the bottom of the machine body. It mainly consists of a motor and a reduction gear. When assembling the machine, the drive unit is usually installed on the bottom plate of the machine body first, and then the upper components are installed. Since the drive unit usually weighs hundreds of kilograms, especially the drive unit of a large double-sided grinding machine, it is difficult to move manually. Therefore, the drive unit is usually installed by overhead crane. However, in subsequent maintenance, due to the obstruction of the upper components such as the grinding disc, the overhead crane cannot lift the drive unit from above the grinding machine. Moreover, the space at the bottom of the machine body is narrow, and it is difficult for workers to carry the drive unit out after disassembling it. Therefore, if the drive unit needs to be repaired, the grinding disc in the upper part of the grinding machine can only be removed. This makes the maintenance of the equipment more difficult and affects the normal operation of the equipment. Summary of the Invention

[0004] The present invention provides a multi-directional adjustment and installation mechanism for heavy-duty components of a grinding machine. The problem to be solved is that the drive components of existing grinding machines are installed at the bottom of the machine body. During subsequent maintenance, due to the obstruction of the upper components such as the grinding disc, the overhead crane cannot lift the drive components from above the grinding machine. Moreover, the space at the bottom of the machine body is narrow, making it difficult for workers to remove the drive components after disassembly. Therefore, if maintenance is required on the drive components, the grinding disc in the upper part of the grinding machine can only be removed. This makes the maintenance of the equipment difficult and affects the normal operation of the equipment.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-directional adjustment and mounting mechanism for a heavy-duty component of a grinding machine, comprising: The grinding frame has an assembly mechanism at its bottom and a drive mechanism on the assembly mechanism. The drive mechanism is used to drive the grinding machine to perform grinding processing. The drive mechanism includes a reducer and a coupling is provided between the reducer and the rotating main shaft of the grinding machine. The assembly mechanism includes a column fixedly installed at the bottom of the grinding machine frame. A horizontal support assembly is installed on the column. The horizontal support assembly includes a set of support slide rails respectively installed on the front and rear sides of the column. Several support plates are installed on the support slide rails. Limit plates are installed on the support plates. A sliding assembly is installed on the support plates. The sliding assembly includes several mounting plates that are slidably installed on the corresponding support plates. The mounting plates are used to support the corresponding drive components.

[0006] In a preferred embodiment, a sub-connecting plate is provided on one side of the mounting plate, and a female connecting groove is provided on the side of the mounting plate away from the sub-connecting plate. The sub-connecting plate and the female connecting groove are adapted to each other. A plurality of mounting grooves are provided on the mounting plate for bolting the drive assembly.

[0007] In a preferred embodiment, the bottom of the mounting plate is provided with a ball bearing slider, and the bottom of the ball bearing slider is provided with at least two ball bearing sliding units, which are adapted to the limiting plate.

[0008] In a preferred embodiment, the drive mechanism further includes a positioning frame fixedly disposed at the bottom of the grinding machine frame. The positioning frame is provided with a motor, a motor, and a reducer. The motor and the reducer are adapted to each other, and the motor and the reducer are adapted to each other. The motor, the reducer, the motor, and the reducer are all used to drive the grinding machine to perform grinding processing. Several connecting frames are evenly disposed on the top of the positioning frame, and the connecting frames are fixedly installed at the bottom of the grinding machine frame.

[0009] In a preferred embodiment, positioning interfaces are provided on the positioning frame at positions corresponding to motor one, reducer one, motor two, and reducer two, respectively, and the plurality of positioning interfaces are used for positioning and installation with the corresponding drive components.

[0010] In a preferred embodiment, a horizontal support component 2 is provided on the column. The horizontal support component 2 includes a set of support slide rails 2 respectively provided on the left and right sides of the column. Several support plates 2 are provided on the support slide rails 2. The support plates 1 and 2 are perpendicular to each other and are staggered vertically.

[0011] In a preferred embodiment, a plurality of limiting plates are provided on the support plate 2, and the distance between the limiting plates 2 and the corresponding plurality of support plates 1 is adapted to each other, and the top slide of the limiting plate 2 is flush with the top slide of the support plate 2.

[0012] In a preferred embodiment, a passage groove is provided on a section of the first limiting plate corresponding to the second limiting plate, and the passage groove is adapted to the corresponding ball slider.

[0013] In a preferred embodiment, both ends of the support plate two are provided with height adjustment screw assemblies, and the support slide rail two is provided with threaded seats, with the height adjustment screw assemblies and threaded seats being adapted to each other.

[0014] In a preferred embodiment, the mounting plate is provided with a lifting assembly, which includes a mounting base fixedly mounted on the mounting plate, a fixing sleeve rotatably mounted on the mounting base, a spring insert rod mounted on the fixing sleeve, a fixing hole mounted on the mounting base, the spring insert rod being adapted to the fixing hole, and a telescopic rod mounted on the fixing sleeve for adjusting the height of the mounting plate.

[0015] The beneficial effects of this invention are as follows: 1. By setting up an assembly mechanism, the present invention provides the drive component of the grinding machine with the function of free movement in the X, Y and Z axes. This allows the drive component to be quickly and conveniently removed from the bottom of the grinding machine without removing the grinding parts on top of the grinding machine during maintenance, effectively reducing the maintenance difficulty for the staff.

[0016] 2. By setting up an assembly mechanism, the present invention enables the disassembly and assembly of individual drive components inside the grinding machine without the need to remove other parts, effectively reducing the workload of workers and significantly reducing the footprint of the equipment, resulting in good performance. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a front view structural diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the drive mechanism portion of the present invention; Figure 4 This is a front view structural schematic diagram of the drive mechanism portion of the present invention; Figure 5 This is a schematic diagram of the drive component portion of the present invention; Figure 6 This is a schematic diagram of the positioning frame portion of the present invention; Figure 7 This is a schematic diagram of the installation mechanism of the present invention; Figure 8 This is a schematic diagram of the sliding component of the present invention; Figure 9 This is a schematic diagram of the lifting component of the present invention; Figure 10 This is a schematic diagram of the structure of the first horizontal support component and the second horizontal support component of the present invention.

[0018] The attached figures are labeled as follows: 1. Grinding machine frame; 2. Assembly mechanism; 21. Column; 22. Horizontal support assembly one; 221. Support slide rail one; 222. Support plate one; 223. Limiting plate one; 23. Horizontal support assembly two; 231. Support slide rail two; 232. Support plate two; 233. Limiting plate two; 234. Height adjustment screw assembly; 24. Sliding assembly; 241. Mounting plate; 242. Ball bearing slider; 243. Lifting assembly; 2431. Mounting base; 2432. Fixing sleeve; 2433. Spring rod; 2434. Fixing hole; 2435. Telescopic rod; 3. Drive mechanism; 31. Positioning frame; 32. Motor one; 33. Reducer one; 34. Motor two; 35. Reducer two; 36. Connecting frame; 37. Positioning interface. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] Example 1 Refer to the instruction manual appendix Figures 1 to 10 This embodiment proposes a multi-directional adjustable mounting mechanism for heavy-duty components of a grinding machine. This addresses the problem that in existing grinding machines where the drive component is mounted at the bottom of the machine, obstruction from the grinding disc and other upper components during subsequent maintenance prevents the overhead crane from lifting the drive component from above. Furthermore, the limited space at the bottom of the machine makes it difficult for workers to remove the drive component after disassembly. Therefore, if maintenance of the drive component is required, the upper part of the grinding disc must be removed, leading to significant difficulties in equipment maintenance and impacting normal operation. This includes: The grinding frame 1 has an assembly mechanism 2 at its bottom and a drive mechanism 3 on the assembly mechanism 2. The drive mechanism 3 is used to drive the grinding machine to perform grinding processing. The drive mechanism 3 includes a reducer 33 and a coupling is provided between the reducer 33 and the rotating main shaft of the grinding machine. It should be noted that the grinding frame 1 is equipped with components such as a grinding disc. Once the grinding disc and other components are disconnected from the main spindle coupling, they will not hinder the disassembly and assembly of the various drive components.

[0021] The assembly mechanism 2 includes a column 21 fixedly installed at the bottom of the grinding machine frame 1. A horizontal support assembly 22 is installed on the column 21. The horizontal support assembly 22 includes a set of support slide rails 221 respectively installed on the front and rear sides of the column 21. Several support plates 222 are installed on the support slide rails 221. Limiting plates 223 are installed on the support plates 222. A sliding assembly 24 is installed on the support plates 222. The sliding assembly 24 includes several mounting plates 241 slidably installed on the corresponding support plates 222. The mounting plates 241 are used to support the corresponding drive components.

[0022] It should be noted that a rectangular groove is provided along the length of the support slide rail 221. The support plate 222 can slide and adjust its position on the support slide rail 221 and be fixedly installed by means of bolts after positioning. The number of support plates 222 is related to the specific number and position of the drive components. The limiting plate 223 is detachably connected to the support plate 222, for example, by means of bolts. The limiting plate 223 is composed of multiple unit modules, and the size of the unit modules of the limiting plate 223 can be set to various specifications according to actual needs.

[0023] In this embodiment, the specific implementation scenario is as follows: First, when a certain drive component needs to be removed for inspection and maintenance, if the drive component is connected to the grinding machine spindle, the operator needs to remove the coupling first. Or, if the drive component is connected to other drive components, such as through a belt, the connecting components need to be removed first to ensure that the drive component is an independent entity. Then, the operator can manually or with the help of a corresponding traction tool slide the drive component and the mounting plate 241 fixedly connected to the drive component together on the support plate 222 to move its position until the drive component moves to the edge of the grinding machine frame 1. At this time, the operator can cooperate with the external support component to dock with the corresponding support plate 222, thereby removing the drive component from under the grinding machine frame 1 to facilitate subsequent operations. It should also be noted that the instruction manual appendix is ​​attached. Figure 7 The adjacent columns 21 are provided with side plates, and the sides are used to install components such as heat sinks. These components and side plates can be removed when needed, so as to avoid hindering the disassembly and assembly of the drive components.

[0024] In a preferred embodiment, a sub-connecting plate is provided on one side of the mounting plate 241, and a female connecting groove is provided on the side of the mounting plate 241 away from the sub-connecting plate. The sub-connecting plate and the female connecting groove are adapted to each other. A plurality of mounting grooves are provided on the mounting plate 241 for bolting the drive assembly.

[0025] It should be noted that the size of the mounting plate 241 can also be set to various specifications according to actual needs. Two or more mounting plates 241 can be connected to each other by bolts to ensure that there is enough space to install and support the corresponding drive components, while minimizing the space occupied, thereby meeting the compact design requirements of the grinder.

[0026] In a preferred embodiment, a ball bearing slider 242 is provided at the bottom of the mounting plate 241, and at least two ball bearing sliding units are provided at the bottom of the ball bearing slider 242, which are adapted to the limiting plate 223.

[0027] It should be noted that two sets of evenly distributed ball bearing sliders 242 need to be set at the bottom of a complete mounting plate 241 to ensure the support stability of the drive assembly.

[0028] In a preferred embodiment, the drive mechanism 3 further includes a positioning frame 31 fixedly disposed at the bottom of the grinding machine frame 1. The positioning frame 31 is provided with a first motor 32, a second motor 34 and a second reducer 35. The first motor 32 and the first reducer 33 are adapted to each other, and the second motor 34 and the second reducer 35 are adapted to each other. The first motor 32, the first reducer 33, the second motor 34 and the second reducer 35 are all used to drive the grinding machine to perform grinding processing. A plurality of connecting frames 36 are evenly disposed on the top of the positioning frame 31, and the connecting frames 36 are fixedly installed at the bottom of the grinding machine frame 1.

[0029] It should be noted that, due to the structure of the equipment, a grinding machine usually has at least one set of drive components consisting of a motor and a reducer. In some large grinding machines, there are usually two or even more sets of drive components. At the same time, the transmission components of the drive components need to be fixed in a fixed position, such as transmission gears. The positioning frame 31 in this embodiment can be used to install these transmission components. The connecting frame 36 can be fixedly installed at the bottom of the grinding machine frame 1 by bolts. This is a mature technology well known to those skilled in the art and will not be described in detail in this embodiment.

[0030] In a preferred embodiment, positioning interfaces 37 are provided on the positioning frame 31 at positions corresponding to motor 32, reducer 33, motor 34 and reducer 35, and the plurality of positioning interfaces 37 are used for positioning and installation with the corresponding drive components.

[0031] It should be noted that the mounting plate 241 is used to support and adjust the position of the drive component. When it is outside the grinder, the two can be fixedly connected by bolts or other means. Therefore, the combination of the two can be regarded as an "independent individual". After the drive component is moved to the bottom of the grinder and preset to the installation position, it can be fixedly connected to the corresponding positioning interface 37 preset on the positioning frame 31 by bolts, thereby completing the fixed installation of the component and the grinder as a whole, thus ensuring the normal operation of the grinder.

[0032] Example 2 Based on Embodiment 1, this embodiment proposes a horizontal support component 23 to solve the problem in the prior art that when a single drive component of a grinding machine is inspected and maintained, it is impossible to disassemble the single drive component due to obstruction by other drive components or grinding machine parts. It is also necessary to disassemble other unnecessary and normally functioning parts, which increases the workload of the staff in inspecting and maintaining the grinding machine and may increase the risk of damaging other grinding machine components. For example, due to limited workshop space, grinding machines in many factories are usually placed against the wall, and some equipment is even placed in the corner of the workshop. This means that when workers need to inspect the drive components inside the grinding machine that are relatively closer to the wall, they can only enter from the side away from the wall. Similarly, after disconnecting the drive components located on the side closer to the wall from the other components, other components may be obstructing the removal path, so it is necessary to remove the obstructing components, which significantly increases the workload of the workers.

[0033] In a preferred embodiment, a horizontal support component 23 is provided on the column 21. The horizontal support component 23 includes a set of support slide rails 231 respectively provided on the left and right sides of the column 21. A plurality of support plates 232 are provided on the support slide rails 231. The support plates 222 and the support plates 232 are perpendicular to each other, and the support plates 222 and the support plates 232 are staggered vertically.

[0034] It should be noted that the second support plate 232 is located below the first support plate 222 and can also provide support for the first support plate 222, further improving the stability of the horizontal support component 22.

[0035] In a preferred embodiment, a plurality of limiting plates 233 are provided on the second support plate 232. The distance between the limiting plates 233 and the corresponding plurality of first support plates 222 is adapted to each other. The top slide of the limiting plate 233 is flush with the top slide of the second support plate 232.

[0036] It should be noted that the size and specifications of the limiting plate 233 can be adjusted according to the actual situation. This is a mature technology well known to those skilled in the art, and will not be described in detail in this embodiment. The support plate 222 and the support plate 232 are arranged perpendicularly and alternately, so that the mounting plate 241 can move bidirectionally on the X and Y axes on the support plate 222 and the support plate 232.

[0037] In a preferred embodiment, a passage groove is provided on a section of the first limiting plate 223 corresponding to the second limiting plate 233, and the passage groove is adapted to the corresponding ball slider 242.

[0038] It should be noted that the size of a single through slot is adapted to the single ball sliding unit on the ball slider 242. At the same time, the opening position of the through slot is adapted to the preset movement path of the drive component to avoid the drive component derailing when moving due to excessive through slots.

[0039] Example 3 Based on Embodiment 2, this embodiment proposes a lifting component 243 to solve the problem in the prior art that some driving components have a gap with other driving components in the Z-axis direction, which causes workers to need additional auxiliary tools to adjust the positioning; Refer to the instruction manual appendix Figure 3 and Figure 4 Motor 2 34 and reducer 2 35 are a set of driving components, and the installation position of reducer 2 35 is higher than that of motor 2 34. When disassembling and assembling motor 2 34, workers need to use additional auxiliary tools to support reducer 2 35.

[0040] In a preferred embodiment, both ends of the support plate 232 are provided with height adjustment screw assemblies 234, and the support slide rail 231 is provided with a threaded seat, and the height adjustment screw assembly 234 is adapted to the threaded seat.

[0041] It should be noted that the installation height of the support plate 232 can be adjusted by rotating the height adjustment screw assembly 234. The threaded seat is detachably installed on the support slide rail 231 and can be connected by bolt fixing to facilitate position adjustment. This is a mature technology well known to those skilled in the art and will not be described in detail in this embodiment.

[0042] In a preferred embodiment, a lifting assembly 243 is provided on the mounting plate 241. The lifting assembly 243 includes a mounting base 2431 fixedly mounted on the mounting plate 241, a fixing sleeve 2432 rotatably mounted on the mounting base 2431, a spring insert 2433 provided on the fixing sleeve 2432, a fixing hole 2434 provided on the mounting base 2431, the spring insert 2433 being adapted to the fixing hole 2434, and a telescopic rod 2435 provided on the fixing sleeve 2432 for adjusting the height of the mounting plate 241.

[0043] It should be noted that when height adjustment is not required, the spring insert 2433 can be inserted into the corresponding fixing hole 2434 by rotating the fixing sleeve 2432, thereby keeping the telescopic rod 2435 in a horizontal state and retracting it to the bottom of the corresponding mounting plate 241, thus reducing the space occupied. The telescopic rod 2435 can be an electric actuator, a hydraulic rod, or a threaded telescopic rod, which are mature technologies well known to those skilled in the art and will not be described in detail in this embodiment. It should also be noted that the telescopic rod 2435 can be supported by setting a support plate 232 in a suitable position below the corresponding telescopic rod 2435.

[0044] In this embodiment, the specific implementation scenario is as follows: the operator adjusts the height of the telescopic rod 2435 so that the mounting plate 241 pre-installed on the reducer 2 35 can be freely adjusted between the positioning interface 37 corresponding to the reducer 2 35 and the support plate 1 222, so as to facilitate the support and disassembly of the motor 2 34, thereby enabling the drive component of the grinding machine to move freely in the X, Y and Z axes.

[0045] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A multi-directional adjustment and mounting mechanism for a heavy-duty component of a grinding machine, characterized in that, include: A grinding frame (1) is provided with an assembly mechanism (2) at the bottom of the grinding frame (1). A drive mechanism (3) is provided on the assembly mechanism (2). The drive mechanism (3) is used to drive the grinding machine to perform grinding processing. The drive mechanism (3) includes a reducer (33). The reducer (33) and the rotating main shaft of the grinding machine are connected by a coupling. The assembly mechanism (2) includes a column (21) fixedly installed at the bottom of the grinding frame (1). A horizontal support component (22) is provided on the column (21). The horizontal support component (22) includes a set of support slide rails (221) respectively installed on the front and rear sides of the column (21). A plurality of support plates (222) are provided on the support slide rails (221). A limit plate (223) is provided on the support plate (222). A sliding component (24) is provided on the support plate (222). The sliding component (24) includes a plurality of mounting plates (241) slidably installed on the corresponding support plate (222). The mounting plates (241) are used to support the corresponding drive components.

2. The multi-directional adjustment and mounting mechanism for a heavy-duty component of a grinding machine according to claim 1, characterized in that, A sub-connecting plate is provided on one side of the mounting plate (241), and a female connecting groove is provided on the side of the mounting plate (241) away from the sub-connecting plate. The sub-connecting plate and the female connecting groove are adapted to each other. A plurality of mounting grooves are provided on the mounting plate (241), and the mounting grooves are used for bolting the drive assembly.

3. The multi-directional adjustment and mounting mechanism for a heavy-duty component of a grinding machine according to claim 2, characterized in that, The bottom of the mounting plate (241) is provided with a ball slider (242), and the bottom of the ball slider (242) is provided with at least two ball sliding units, which are adapted to the limiting plate (223).

4. The multi-directional adjustment and mounting mechanism for a heavy-duty component of a grinding machine according to claim 3, characterized in that, The drive mechanism (3) also includes a positioning frame (31) fixedly installed at the bottom of the grinding machine frame (1). The positioning frame (31) is provided with a motor (32), a motor (34) and a reducer (35). The motor (32) and the reducer (33) are compatible, and the motor (34) and the reducer (35) are compatible. The motor (32), the reducer (33), the motor (34) and the reducer (35) are all used to drive the grinding machine to perform grinding. Several connecting frames (36) are evenly arranged on the top of the positioning frame (31). The connecting frames (36) are fixedly installed at the bottom of the grinding machine frame (1).

5. The multi-directional adjustment and mounting mechanism for a heavy-duty component of a grinding machine according to claim 4, characterized in that, The positioning frame (31) is provided with positioning interfaces (37) at positions corresponding to motor one (32), reducer one (33), motor two (34) and reducer two (35), respectively. Several positioning interfaces (37) are used for positioning and installation with the corresponding drive components.

6. The multi-directional adjustment and mounting mechanism for a heavy-duty component of a grinding machine according to claim 5, characterized in that, The column (21) is provided with a horizontal support component two (23). The horizontal support component two (23) includes a set of support slide rails two (231) respectively arranged on the left and right sides of the column (21). The support slide rails two (231) are provided with a number of support plates two (232). The support plate one (222) and the support plate two (232) are perpendicular to each other, and the support plate one (222) and the support plate two (232) are staggered vertically.

7. The multi-directional adjustment and mounting mechanism for a heavy-duty component of a grinding machine according to claim 6, characterized in that, The second support plate (232) is provided with several second limiting plates (233), and the distance between the second limiting plates (233) and the corresponding several first support plates (222) is adapted to each other. The top slide of the second limiting plate (233) is flush with the top slide of the second support plate (232).

8. The multi-directional adjustment and mounting mechanism for a heavy-duty component of a grinding machine according to claim 7, characterized in that, A passage groove is provided on a section of the first limiting plate (223) corresponding to the second limiting plate (233), and the passage groove is adapted to the corresponding ball slider (242).

9. A multi-directional adjustment and mounting mechanism for a heavy-duty component of a grinding machine according to claim 8, characterized in that, Both ends of the second support plate (232) are provided with height adjustment screw assemblies (234), and the second support slide rail (231) is provided with a threaded seat. The height adjustment screw assembly (234) is adapted to the threaded seat.

10. A multi-directional adjustment and mounting mechanism for a heavy-duty component of a grinding machine according to claim 9, characterized in that, The mounting plate (241) is provided with a lifting assembly (243), which includes a mounting base (2431) fixedly mounted on the mounting plate (241). A fixing sleeve (2432) is rotatably mounted on the mounting base (2431). A spring insert (2433) is provided on the fixing sleeve (2432). A fixing hole (2434) is provided on the mounting base (2431). The spring insert (2433) is adapted to the fixing hole (2434). A telescopic rod (2435) is provided on the fixing sleeve (2432). The telescopic rod (2435) is used to adjust the height of the mounting plate (241).

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