Portable instrument placement integrated platform

Abstract

The invention discloses a portable instrument placement comprehensive platform, and relates to the technical field of placement platform devices, the portable instrument placement comprehensive platform comprises an adjusting mechanism, a moving mechanism is arranged on the top surface of the adjusting mechanism, the moving mechanism comprises a bottom plate, the bottom plate is fixedly connected with the top surface of the adjusting mechanism, the top surface of the bottom plate is fixedly connected with a supporting rod, and the supporting rod is fixedly connected with the top surface of the adjusting mechanism. The outer surface of the supporting rod is movably and rotationally connected with two first sleeves. The moving mechanism is fixed to the top face of the adjusting mechanism through the bottom plate, the outer surface of the supporting rod is rotationally connected with a second sleeve, a first sleeve and a third sleeve, bolts are arranged in the side faces of the supporting rod, the inserting plate device, the clamping arm device, the adjusting arm device and the platform device can be driven to rotate with the axis of the supporting rod as the axis, and multi-angle clamping is facilitated; and the vertical sleeve fixedly connected to the top surface of the support rod can enable the adjusting rod to drive the hook on the top surface to adjust the height, and can be fixed at a proper position.

Description

Technical Field

[0001] The invention relates to the technical field of placing platform devices, and in particular to a portable instrument placing integrated platform. Background Art

[0002] Portable equipment is equipment that is easy to carry between sites. Equipment that is not more than 5 kg without a handle and is easy to hold, and equipment that is not more than 23 kg with a handle are all portable equipment. When using these equipment, a placement platform is required for easy operation.

[0003] Patent publication number CN209634930U provides a multifunctional environmental protection detection instrument placement platform, including a placement box, a fixed plate, a positioning column, a movable plate, a clamping block, a sliding column, a limit ring, a spring, and a driving member, wherein the driving member is used to drive the movable plate to move toward the fixed plate side.

[0004] In order to solve the problem that the fixed inner diameter, through-hole placement holes on the placement rack cannot meet actual needs, the existing technology uses V-shaped grooves to accommodate test tubes of different outer diameters. However, there are still great limitations in the use of the placement platform, which leads to the problem that multiple equipment cannot be fixed at multiple angles. Summary of the invention

[0005] The object of the present invention is to provide a portable instrument placement integrated platform 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:

[0007] A portable instrument placement integrated platform includes an adjustment mechanism, a moving mechanism is arranged on the top surface of the adjustment mechanism, the moving mechanism includes a bottom plate, the bottom plate is fixedly connected to the top surface of the adjustment mechanism, the top surface of the bottom plate is fixedly connected to a support rod, the outer surface of the support rod is movably and rotatably connected to sleeve one, the number of sleeves one is two, a clamping arm device is arranged inside the side surface of sleeve one, an adjustment arm device is arranged inside the other side surface of sleeve one, and the top end of the outer surface of the support rod is rotatably connected to sleeve three.

[0008] A further improvement of the technical solution of the present invention is that one end of the outer surface of the sleeve three is fixedly connected to a platform device, the bottom end of the outer surface of the support rod is rotatably connected to the sleeve two, the side of the sleeve two is fixedly connected to a plug-in device, the top surface of the support rod is fixedly connected to a vertical sleeve, the interior of the vertical sleeve is slidably connected to an adjusting rod, and the top surface of the adjusting rod is fixedly connected to a hook.

[0009] A further improvement of the technical solution of the present invention is that the adjusting arm device includes a sliding rod 1, which is slidably connected to the inside of the side of another sleeve 1, the side of the sliding rod 1 is fixedly connected with an adjusting buckle, the side of the adjusting buckle is fixedly connected with a connecting rod, the side of the connecting rod is fixedly connected with a threaded rod 1, and the side of the threaded rod 1 is fixedly connected with a fixing plate 1.

[0010] A further improvement of the technical solution of the present invention is that: the surface of the threaded rod 1 is slidably connected to a clamping plate 1, the side of the clamping plate 1 is rotatably connected to a turning button 1, and the turning button 1 is threadedly connected to the outer surface of the threaded rod 1.

[0011] A further improvement of the technical solution of the present invention is that the clamping arm device includes a sliding rod 2, which is slidably connected to the side of the sleeve 1, the side of the sliding rod 2 is fixedly connected to a threaded rod 2, the side of the threaded rod 2 is fixedly connected to a fixing plate 2, the outer surface of the threaded rod 2 is slidably connected to a clamping plate 2, the side of the clamping plate 2 is rotatably connected to a knob 2, and the knob 2 is threadedly connected to the outer surface of the threaded rod 2.

[0012] A further improvement of the technical solution of the present invention is that the platform device includes a placing platform device, the placing platform device is fixedly connected to one end of the outer surface of sleeve three, the side of the placing platform device is fixedly connected to a fixed block, and the side of the placing platform device is slidably connected to a rack.

[0013] A further improvement of the technical solution of the present invention is that: a clamping block is fixedly connected to the side of the rack, a gear is movably connected to the other side of the rack, the gear is rotatably connected to the inside of the placement platform device, a spring box is fixedly connected to the side of the placement platform device, a clamping block is slidably connected to the inside of the spring box, one end of the clamping block is clamped to the inside of the side of the rack, a fixing knob is threadedly connected to the inside of the side of the spring box, and one end of the side of the fixing knob passes through the inner side of the spring box and is movably connected to the side of the clamping block.

[0014] A further improvement of the technical solution of the present invention is that the plug-in device includes a fixed shell, the fixed shell is fixedly connected to the side of the second sleeve, an L-shaped plate is slidably connected inside the fixed shell, the number of the L-shaped plates is two, the two L-shaped plates are oriented in opposite directions, a spring is movably connected to the side of the L-shaped plate, the other side of the L-shaped plate is fixedly connected to a clamping arm, and the side of the clamping arm is movably connected to the plug-in plate.

[0015] A further improvement of the technical solution of the present invention is that the adjustment mechanism includes a moving wheel, the top surface of the moving wheel is rotatably connected to a support arm, the side of the support arm is movably connected to a base, the bottom plate is fixedly connected to the top surface of the base, the outer surface of the support arm is clamped with an adjustment ring, and the adjustment ring is rotatably connected to the bottom end of the outer surface of the support rod.

[0016] Due to the adoption of the above technical solution, the present invention has the following technical advances compared with the prior art:

[0017] 1. The present invention provides a portable instrument placement integrated platform, which adopts the cooperation of a moving mechanism, a bottom plate, a support rod, a sleeve 1, a plug-in plate device, a clamping arm device, a sliding rod 2, a threaded rod 2, a fixing plate 2, a clamping plate 2, a knob 2, an adjustment arm device, a sliding rod 1, an adjustment buckle, a connecting rod, a threaded rod 1, a fixing plate 1, a clamping plate 1, and a turning knob 1. The moving mechanism is fixed to the top surface of the adjustment mechanism through the bottom plate. The outer surface of the support rod is rotatably connected with sleeve 2, sleeve 1 and sleeve 3 respectively, and bolts are arranged inside the side surface thereof, which can drive the plug-in plate device, the clamping arm device, the adjustment arm device, and the platform device to rotate with the axis of the support rod as the axis, so that it is convenient for multiple The angle is clamped, and the vertical sleeve fixedly connected to the top surface of the support rod can make the adjusting rod drive the hook on its top surface to adjust the height, and it can be fixed in a suitable position. Turning knob two can drive the splint two on its side to move on the surface of threaded rod two, so that fixed plate two and splint two can clamp the bed frame, loosen the bolt inside the top surface of the adjusting buckle, so that the adjusting buckle can drive the connecting rod to adjust the angle, and fix the angle at a suitable position, turning knob one can make splint one move along threaded rod one, splint one and fixed plate one will be fixed on another bed frame, making the device more stable during use and improving the adaptability of the device.

[0018] 2. The present invention provides a portable instrument placement integrated platform, which adopts a platform device, a clamping block, a placement platform device, a fixed block, a rack, a gear, a spring box, a clamping block, a fixing knob, a clamping head, a plug-in plate device, a fixed shell, an L-shaped plate, a spring, a clamping arm, and a plug-in plate. The gear is rotated to drive the rack meshing with it to move left and right inside the placement platform device, so that a clamping or loosening action can be formed between the clamping block and the fixed block. When the gear adjusts the position of the clamping block, the clamping block will expand and contract inside the spring box with the movement of the rack. When the adjusted position is appropriate, the fixing knob can be rotated to clamp the clamping block to prevent the rack from continuing to move. The clamping arm is pulled to make the L-shaped plate on the side of the clamping arm slide inside the fixed shell, and the spring is compressed to open the two clamping arms. The plug-in plate can be quickly replaced, and the clamping arm is released. Under the action of the spring, the plug-in plate is clamped again, thereby improving the adaptability of the device.

[0019] 3. The present invention provides a portable instrument placement integrated platform, which adopts the cooperation of an adjustment mechanism, a base, an adjustment collar, a support arm, and a moving wheel. The moving mechanism and the adjustment mechanism are connected together through the base. The side of the base is movably connected with a support arm. A plurality of support arms can be unfolded or retracted to provide support or facilitate movement. When the support arm is unfolded, the moving wheel contacts the ground, and it can be conveniently moved a short distance. The adjustment collar can keep the support arm in an unfolded state. If the support arm needs to be retracted, the adjustment collar can be rotated to align the support arm with the bottom opening of the adjustment collar, thereby improving the adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the mobile mechanism of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the adjusting arm device of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the clamping arm device of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the placement platform device of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the plugging device of the present invention;

[0026] Figure 7 It is a structural schematic diagram of the regulating mechanism of the present invention;

[0027] Figure 8 It is a schematic diagram of the contraction structure of the present invention.

[0028] In the figure: 1, moving mechanism; 11, bottom plate; 12, support rod; 13, sleeve 1; 14, plug-in plate device; 141, fixed shell; 142, L-shaped plate; 143, spring; 144, clamping arm; 145, plug-in plate; 15, clamping arm device; 151, sliding rod 2; 152, threaded rod 2; 153, fixed plate 2; 154, clamping plate 2; 155, knob 2; 16, adjusting arm device; 161, sliding rod 1; 162, adjusting buckle; 163, connecting rod; 164, threaded rod 1; 165, fixed Plate 1; 166, splint 1; 167, knob 1; 17, platform device; 171, clamping block; 172, platform device; 173, fixing block; 174, rack; 175, gear; 176, spring box; 177, clamping block; 178, fixing knob; 179, clamping head; 18, vertical sleeve; 19, adjusting rod; 110, hook; 111, sleeve 2; 112, sleeve 3; 2, adjusting mechanism; 21, base; 22, adjusting collar; 23, support arm; 24, moving wheel. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with embodiments:

[0030] Example 1

[0031] like Figure 1-8 As shown, the present invention provides a portable instrument placement integrated platform, including an adjustment mechanism 2, a moving mechanism 1 is arranged on the top surface of the adjustment mechanism 2, the moving mechanism 1 includes a bottom plate 11, the bottom plate 11 is fixedly connected to the top surface of the adjustment mechanism 2, a support rod 12 is fixedly connected to the top surface of the bottom plate 11, the outer surface of the support rod 12 is movably and rotatably connected to a sleeve 13, there are two sleeves 13, a clamping arm device 15 is arranged inside the side of the sleeve 13, an adjustment arm device 16 is arranged inside the side of the other sleeve 13, the top end of the outer surface of the support rod 12 is rotatably connected to a sleeve 3 112, one end of the outer surface of the sleeve 3 112 is fixedly connected to a platform device 17, the bottom end of the outer surface of the support rod 12 is rotatably connected to a sleeve 2 111, the side of the sleeve 2 111 is fixedly connected to a plug-in device 14, the top surface of the support rod 12 is fixedly connected to a vertical sleeve 18, the interior of the vertical sleeve 18 is slidably connected to an adjustment rod 19, and the top surface of the adjustment rod 19 is fixedly connected to a hook 110.

[0032] In this embodiment, the moving mechanism 1 is fixed to the top surface of the adjusting mechanism 2 through the base plate 11, and the outer surface of the support rod 12 is rotatably connected with sleeve 2 111, sleeve 1 13 and sleeve 3 112, and bolts are provided inside the side surfaces, which can drive the plug-in device 14, the clamping arm device 15, the adjusting arm device 16, and the platform device 17 to rotate around the axis of the support rod 12, so as to facilitate multi-angle clamping. The vertical sleeve 18 fixedly connected to the top surface of the support rod 12 can enable the adjusting rod 19 to drive the hook 110 on its top surface to adjust the height, and can be fixed in a suitable position.

[0033] Example 2

[0034] like Figure 1-8 As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, the adjusting arm device 16 includes a sliding rod 161, the sliding rod 161 is slidably connected to the inside of the side of another sleeve 13, the side of the sliding rod 161 is fixedly connected to an adjusting buckle 162, the side of the adjusting buckle 162 is fixedly connected to a connecting rod 163, the side of the connecting rod 163 is fixedly connected to a threaded rod 164, the side of the threaded rod 164 is fixedly connected to a fixing plate 165, the surface of the threaded rod 164 is slidably connected to a clamping plate 166, and the clamping plate 166 is fixedly connected to the side of the threaded rod 164. The side of the threaded rod 164 is rotatably connected with a knob 167, and the knob 167 is threadedly connected to the outer surface of the threaded rod 164. The clamping arm device 15 includes a sliding rod 151, and the sliding rod 151 is slidably connected to the side of the sleeve 13. The side of the sliding rod 151 is fixedly connected with a threaded rod 152, and the side of the threaded rod 152 is fixedly connected with a fixing plate 153. The outer surface of the threaded rod 152 is slidably connected with a clamping plate 154, and the side of the clamping plate 154 is rotatably connected with a knob 155, and the knob 155 is threadedly connected to the outer surface of the threaded rod 152.

[0035] In this embodiment, the second knob 155 is rotated to drive the second clamping plate 154 on its side to move on the surface of the second threaded rod 152, so that the second fixing plate 153 and the second clamping plate 154 can clamp the bed frame, and the bolt inside the top surface of the adjusting buckle 162 is loosened, so that the adjusting buckle 162 can drive the connecting rod 163 to adjust the angle and fix the angle at a suitable position, and the turning knob 167 is turned to make the clamping plate 166 move along the threaded rod 164, and the clamping plate 166 and the fixing plate 165 will be fixed on another bed frame, making the device more stable during use.

[0036] Example 3

[0037] like Figure 1-8As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, the platform device 17 includes a placement platform device 172, the placement platform device 172 is fixedly connected to one end of the outer surface of the sleeve three 112, the side of the placement platform device 172 is fixedly connected to a fixed block 173, the side of the placement platform device 172 is slidably connected to the inside of a rack 174, the side of the rack 174 is fixedly connected to a clamping block 171, the other side of the rack 174 is movably connected to a gear 175, the gear 175 is rotatably connected to the inside of the placement platform device 172, the side of the placement platform device 172 is fixedly connected to a spring box 176, the inside of the spring box 176 is slidably connected to a clamping block 177, One end of the block 177 is clamped in the side of the rack 174, and the side of the spring box 176 is internally threaded with a fixing knob 178. One end of the side of the fixing knob 178 passes through the inner side of the spring box 176 and is movably connected to the side of the block 177. The plug-in device 14 includes a fixed shell 141, which is fixedly connected to the side of the sleeve 111. An L-shaped plate 142 is slidably connected to the inside of the fixed shell 141. There are two L-shaped plates 142, which face opposite directions. A spring 143 is movably connected to the side of the L-shaped plate 142, and a clamp arm 144 is fixedly connected to the other side of the L-shaped plate 142. A plug-in plate 145 is movably connected to the side of the clamp arm 144.

[0038] In this embodiment, by rotating the gear 175, the gear 175 drives the gear rack 174 meshing therewith to move left and right inside the placement platform device 172, so that a clamping or loosening action can be formed between the clamping block 171 and the fixed block 173. When the gear 175 adjusts the position of the clamping block 171, the clamping block 177 will expand and contract inside the spring box 176 with the movement of the gear rack 174. When the adjusted position is appropriate, the fixing knob 178 can be rotated to jam the clamping block 177, preventing the gear rack 174 from continuing to move, and the clamping arm 144 is pulled to make the L-shaped plate 142 on the side of the clamping arm 144 slide inside the fixed shell 141, compressing the spring 143 to open the two clamping arms 144, so that the plug plate 145 can be quickly replaced, and the clamping arm 144 is released. Under the action of the spring 143, the plug plate 145 can be clamped again.

[0039] Example 4

[0040] like Figure 1-8 As shown, based on Example 1, the present invention provides a technical solution: preferably, the adjusting mechanism 2 includes a moving wheel 24, the top surface of the moving wheel 24 is rotatably connected to the support arm 23, the side of the support arm 23 is movably connected to the base 21, the bottom plate 11 is fixedly connected to the top surface of the base 21, the outer surface of the support arm 23 is clamped with an adjusting ring 22, and the adjusting ring 22 is rotatably connected to the bottom end of the outer surface of the support rod 12.

[0041] In this embodiment, the moving mechanism 1 and the adjusting mechanism 2 are connected together through the base 21. The side of the base 21 is movably connected with a support arm 23. The multiple support arms 23 can be unfolded or retracted to provide support or facilitate movement. When the support arms 23 are unfolded, the moving wheels 24 touch the ground, which can be conveniently moved a short distance. The adjusting ring 22 can keep the support arms 23 in the unfolded state. If the support arms 23 need to be retracted, the adjusting ring 22 can be rotated to align the support arms 23 with the bottom opening of the adjusting ring 22.

[0042] The working principle of the portable instrument placement integrated platform is described in detail below.

[0043] like Figure 1-8 As shown, by pushing the device, the moving wheel 24 drives the entire device to move to a suitable position, and the directions of the adjusting sleeve 2 111, the sleeve 1 13 and the sleeve 3 112 are convenient for subsequent work. The bolts inside the sleeve 13 can be loosened to adjust the length of the clamping arm device 15 and the adjusting arm device 16. The knob 2 155 is turned to drive the clamping plate 2 154 on its side to move on the surface of the threaded rod 2 152, so that the fixing plate 2 153 and the clamping plate 2 154 can clamp the bed frame, and the bolts inside the top surface of the adjusting buckle 162 are loosened, so that the adjusting buckle 162 can drive the connecting rod 163 to adjust the angle and fix the angle at a suitable position, and the knob 167 is turned to make the clamping plate 166 move along the threaded rod 164, and the clamping plate 166 and the fixing plate 165 will move. The gear 175 is fixed on another bed frame to make the device more stable during use. The gear 175 is rotated to drive the gear 174 meshing with it to move left and right inside the placement platform device 172, so that a clamping or loosening action can be formed between the clamping block 171 and the fixed block 173. The clamping arm 144 is pulled to make the L-shaped plate 142 on the side of the clamping arm 144 slide inside the fixed shell 141, and the spring 143 is compressed to open the two clamping arms 144, so that the plug plate 145 can be quickly replaced. The clamping arm 144 is released and the plug plate 145 is clamped again under the action of the spring 143. When the adjustment mechanism 2 needs to be folded, the adjustment ring 22 can be rotated to align the support arm 23 with the bottom opening of the adjustment ring 22 to move the support arm 23 out of the inside of the support arm 23.

[0044] 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 portable instrument placement integrated platform, comprising an adjustment mechanism (2), characterized in that: The top surface of the adjusting mechanism (2) is provided with a moving mechanism (1); The moving mechanism (1) comprises a bottom plate (11), the bottom plate (11) is fixedly connected to the top surface of the adjusting mechanism (2), the top surface of the bottom plate (11) is fixedly connected to a support rod (12), the outer surface of the support rod (12) is movably and rotatably connected to a sleeve one (13), the number of the sleeves one (13) is two, a clamping arm device (15) is arranged inside the side surface of the sleeve one (13), and an adjusting arm device (16) is arranged inside the side surface of the other sleeve one (13), and the top end of the outer surface of the support rod (12) is rotatably connected to a sleeve three (112).

2. A portable instrument placement integrated platform according to claim 1, characterized in that: One end of the outer surface of the sleeve three (112) is fixedly connected to a platform device (17); the bottom end of the outer surface of the support rod (12) is rotatably connected to the sleeve two (111); the side of the sleeve two (111) is fixedly connected to a plug-in device (14); the top surface of the support rod (12) is fixedly connected to a vertical sleeve (18); the interior of the vertical sleeve (18) is slidably connected to an adjustment rod (19); and the top surface of the adjustment rod (19) is fixedly connected to a hook (110).

3. The portable instrument placement integrated platform according to claim 1, characterized in that: The adjusting arm device (16) comprises a sliding rod (161), wherein the sliding rod (161) is slidably connected to the inside of the side surface of another sleeve (13), the side surface of the sliding rod (161) is fixedly connected to an adjusting buckle (162), the side surface of the adjusting buckle (162) is fixedly connected to a connecting rod (163), the side surface of the connecting rod (163) is fixedly connected to a threaded rod (164), and the side surface of the threaded rod (164) is fixedly connected to a fixing plate (165).

4. A portable instrument placement integrated platform according to claim 3, characterized in that: The surface of the threaded rod 1 (164) is slidably connected to a clamping plate 1 (166), and the side of the clamping plate 1 (166) is rotatably connected to a turning button 1 (167), and the turning button 1 (167) is threadedly connected to the outer surface of the threaded rod 1 (164).

5. The portable instrument placement integrated platform according to claim 1, characterized in that: The clamping arm device (15) comprises a second sliding rod (151), wherein the second sliding rod (151) is slidably connected to the side surface of the first sleeve (13), the side surface of the second sliding rod (151) is fixedly connected to a second threaded rod (152), the side surface of the second threaded rod (152) is fixedly connected to a second fixing plate (153), the outer surface of the second threaded rod (152) is slidably connected to a second clamping plate (154), the side surface of the second clamping plate (154) is rotatably connected to a second knob (155), and the second knob (155) is threadedly connected to the outer surface of the second threaded rod (152).

6. The portable instrument placement integrated platform according to claim 1, characterized in that: The platform device (17) comprises a placement platform device (172), wherein the placement platform device (172) is fixedly connected to one end of the outer surface of the sleeve three (112), a fixed block (173) is fixedly connected to the side of the placement platform device (172), and a rack (174) is slidably connected inside the side of the placement platform device (172).

7. A portable instrument placement integrated platform according to claim 6, characterized in that: A clamping block (171) is fixedly connected to the side of the rack (174), and a gear (175) is movably connected to the other side of the rack (174). The gear (175) is rotatably connected to the inside of the placement platform device (172). A spring box (176) is fixedly connected to the side of the placement platform device (172). A clamping block (177) is slidably connected to the inside of the spring box (176). One end of the clamping block (177) is clamped to the inside of the side of the rack (174). A fixing knob (178) is threadedly connected to the inside of the side of the spring box (176). One end of the side of the fixing knob (178) passes through the inner side of the spring box (176) and is movably connected to the side of the clamping block (177).

8. The portable instrument placement integrated platform according to claim 2, characterized in that: The plugging plate device (14) comprises a fixed shell (141), wherein the fixed shell (141) is fixedly connected to the side of the second sleeve (111), and an L-shaped plate (142) is slidably connected inside the fixed shell (141), wherein the number of the L-shaped plates (142) is two, and the two L-shaped plates (142) face opposite directions, and a spring (143) is movably connected to the side of the L-shaped plate (142), and a clamping arm (144) is fixedly connected to the other side of the L-shaped plate (142), and a plugging plate (145) is movably connected to the side of the clamping arm (144).

9. The portable instrument placement integrated platform according to claim 1, characterized in that: The adjustment mechanism (2) comprises a moving wheel (24), the top surface of the moving wheel (24) is rotatably connected to a support arm (23), the side surface of the support arm (23) is movably connected to a base (21), the bottom plate (11) is fixedly connected to the top surface of the base (21), the outer surface of the support arm (23) is clamped with an adjustment ring (22), and the adjustment ring (22) is rotatably connected to the bottom end of the outer surface of the support rod (12).

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