Trolley for transporting photovoltaic glass samples

Abstract

The utility model discloses a trolley for transporting photovoltaic glass samples, which comprises a bearing platform, a first telescopic limiting assembly and a second telescopic limiting assembly, and the first telescopic limiting assembly and the second telescopic limiting assembly are respectively arranged on a first edge and a second edge which are adjacent to each other on the bearing platform; the first telescopic limiting assembly comprises a first air cylinder and a first baffle. The first cylinder is fixedly connected below the bearing platform, the first baffle is vertically arranged on a first piston rod of the first cylinder, and the upper end of the first baffle is higher than the upper surface of the first edge of the bearing platform; the second telescopic limiting assembly and the first telescopic limiting assembly are the same in structure. And a third baffle plate and a fourth baffle plate are vertically arranged on the other two edges of the bearing platform respectively. The size of the transportation trolley is adjusted through the air cylinder, and the transportation requirements of glass of different sizes are met; the glass samples are fixed through the baffles, so that the phenomena of glass slipping, damage and the like in the transportation process are prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to transport trolley technical field especially relates to a trolley for photovoltaic glass sample transportation. BACKGROUND

[0002] In photovoltaic glass production, according to need, glass sampling inspection will be carried out from the production line, and the sampling inspection glass needs to be transported to the inspection room for detection of relevant dimensions and quality. As the glass size is getting larger and larger, and the specifications are more, when handling, the transport trolley needs to be suitable for various sizes of glass and transport channels.

[0003] The patent application with publication number (201510188693.6) discloses a transport trolley, which comprises rollers, a bottom plate, a power device and a supporting device. The power device, the supporting device and the rollers are arranged on the lower side of the bottom plate. The power device is connected to the supporting device and is used to drive the rollers to rotate. The supporting device is connected to the lower surface of the bottom plate and is used to buffer and support the gravity borne by the bottom plate.

[0004] The prior art has the following problems:

[0005] I. The transport trolley of fixed size can only transport glass samples of a single size;

[0006] II. The trolley edge lacks a limiting device, which cannot effectively protect the glass, and during transportation, the glass may slip and break;

[0007] III. The glass is directly placed on the trolley, which may cause friction and scratching on the surface of the glass.

[0008] Therefore, the prior art still needs to be improved. UTILITY MODEL CONTENT

[0009] To solve the above technical problems, the utility model embodiment proposes a trolley for photovoltaic glass sample transportation to solve the technical problems of fixed-size transport trolley that can only transport glass samples of a single size and glass scratching and slipping during transportation.

[0010] To solve the above technical problems, some embodiments of the utility model disclose a trolley for photovoltaic glass sample transportation, which comprises a bearing platform, a first telescopic limiting component and a second telescopic limiting component,

[0011] The first telescopic limiting component and the second telescopic limiting component are respectively arranged on the first side and the second side adjacent to the bearing platform;

[0012] The first telescopic limiting component comprises a first cylinder and a first baffle;

[0013] The first cylinder is fixedly connected below the bearing platform, and the first baffle is vertically arranged on the first piston rod of the first cylinder, with the upper end of the first baffle being higher than the upper surface of the first side of the bearing platform;

[0014] The second telescopic limiting assembly comprises a second cylinder and a second baffle.

[0015] The second cylinder is fixedly connected below the bearing platform, and the second baffle is vertically arranged on the second piston rod of the second cylinder, with the upper end of the second baffle being higher than the upper surface of the second side of the bearing platform.

[0016] The third baffle and the fourth baffle are vertically arranged on the other two sides of the bearing platform, respectively.

[0017] In some embodiments, the lower side of the bearing platform is provided with a first sliding groove and a second sliding groove, and the upper side of the first cylinder and the second cylinder is respectively provided with a first sliding block and a second sliding block matched with the first sliding groove and the second sliding groove, and the first cylinder is connected with the first sliding groove through the first sliding block, and the second cylinder is connected with the second sliding groove through the second sliding block.

[0018] In addition, the first sliding groove is arranged perpendicular to the first side, and the second sliding groove is arranged perpendicular to the second side.

[0019] In some embodiments, the first locking device and the second locking device are further included, the first locking device locks the position of the first sliding block in the first sliding groove, and the second locking device locks the position of the second sliding block in the second sliding groove.

[0020] In some embodiments, the first baffle and the second baffle are both provided with a buffer pad on the side facing the bearing platform.

[0021] In some embodiments, the third baffle and the fourth baffle are both provided with a buffer pad on the side facing the bearing platform.

[0022] In some embodiments, the support column, the connecting assembly, the movable caster and the connecting beam are further included, wherein,

[0023] The four support columns are respectively located below the four corners of the bearing platform.

[0024] The upper end of the support column is connected with the bearing platform through the connecting assembly.

[0025] The lower end of the support column is connected with the movable caster.

[0026] The connecting beam is arranged between the ends of the adjacent two support columns close to the movable caster.

[0027] In some embodiments, the connecting assembly comprises a rotary cylinder and a cam.

[0028] The cam is in abutment with the lower surface of the bearing platform.

[0029] The rotary cylinder is fixedly installed at the upper end of the support column;

[0030] The output gear of the rotary cylinder is connected with and drives the cam to rotate.

[0031] In some embodiments, the rotary cylinder comprises a cylinder barrel, an end cover, a first plug column, a second plug column, a first air cavity, a second air cavity, a third air cavity and a fourth air cavity, wherein,

[0032] The cylinder barrel is sealed by the end cover;

[0033] The first cavity and the second cavity are arranged in parallel in the cylinder barrel;

[0034] The first plug column is located in the first cavity, and the first plug column divides the first cavity into the first air cavity and the third air cavity;

[0035] The second plug column is located in the second cavity, and the second plug column divides the second cavity into the second air cavity and the fourth air cavity;

[0036] The first plug column and the second plug column are columnar pistons, and the piston rod in the middle of the columnar pistons is a rack structure;

[0037] The end cover is provided with a first air inlet pipe and a second air inlet pipe, the first air inlet pipe is connected with the first air cavity, and the second air inlet pipe is connected with the second air cavity;

[0038] The inner wall of the cylinder barrel is further provided with a first channel and a second channel, the first channel is connected with the first air cavity and the fourth air cavity, and the second channel is connected with the second air cavity and the third air cavity.

[0039] In some embodiments, the rotary cylinder further comprises an internal gear and an output gear,

[0040] A groove is arranged between the first cavity and the second cavity, the internal gear is located in the groove, and the teeth of the internal gear extend out of the groove and extend to the first cavity and the second cavity;

[0041] The internal gear is respectively meshed with the rack structures of the first plug column and the second plug column;

[0042] The output gear is located on the outer wall of the rotary cylinder;

[0043] The internal gear is connected with and drives the output gear to rotate.

[0044] In some embodiments, a universal ball is further included,

[0045] A plurality of concave grooves are arranged on the bearing platform;

[0046] The universal ball is clamped in the concave groove;

[0047] The upper end of the universal ball protrudes from the upper surface of the bearing platform.

[0048] The utility model discloses at least has following beneficial effect:

[0049] The utility model provides a trolley for photovoltaic glass sample transportation is provided with first air cylinder and second air cylinder on the two edges of adjacent of bearing platform, and the size of the trolley is adjusted through the telescopic air cylinder, to adapt to the transportation requirement of different size glass sample, through the vertical first baffle and second baffle of piston rod of first air cylinder and second air cylinder, and the vertical third baffle and fourth baffle of the other two edges of bearing platform, the glass sample is fixed, prevents the phenomenon such as glass slide, breakage in the transportation process, and a plurality of universal ball is arranged on the bearing platform, can effectively avoid the friction and scratch of glass surface. BRIEF DESCRIPTION OF DRAWINGS

[0050] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0051] Figure 1 The utility model some embodiments disclosed a kind of trolley for photovoltaic glass sample transportation structure diagram;

[0052] Figure 2 The utility model some embodiments disclosed a kind of trolley for photovoltaic glass sample transportation side view.

[0053] Mark explanation of drawing:

[0054] 1, bearing platform;2, first telescopic limiting component;21, first air cylinder;22, first baffle;3, second telescopic limiting component;31, second air cylinder;32, second baffle;4, third baffle;5, fourth baffle;6, support column;7, connecting component;8, movable trundle;9, connecting beam;10, universal ball. DETAILED DESCRIPTION

[0055] The embodiments of the present disclosure are further described in detail below in combination with the drawings and examples. The detailed description of the following examples and drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure, and the present disclosure can be realized in many different forms, and is not limited to the specific examples disclosed in the text, but includes all technical solutions falling within the scope of claims.

[0056] The present disclosure provides these examples to make the disclosure thorough and complete, and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that: unless otherwise specified, the relative arrangement of components and steps, the components of materials, numerical expressions and numerical values set forth in these examples should be interpreted as merely exemplary, not as a limitation.

[0057] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality of" is greater than or equal to two; The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer" and the like is only for the purpose of facilitating the description of the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation to the present disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0058] In addition, "first", "second", and similar words used in the present disclosure do not mean any order, number or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable range of error. "Parallel" is not strictly parallel, but within the allowable range of error. "Include" or "contain" and similar words mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements.

[0059] It should also be noted that, in the description of the present disclosure, unless otherwise specifically specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; It can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances. When it is described that a specific device is located between the first device and the second device, there can be an intermediate device between the specific device and the first device or the second device, or there can be no intermediate device.

[0060] All terms used in the present disclosure have the same meaning as understood by those skilled in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted to have meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or excessively formalized sense, unless specifically defined here.

[0061] Techniques, methods and equipment known to those skilled in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the specification.

[0062] Some embodiments of this utility model disclose a trolley for transporting photovoltaic glass samples, such as... Figure 1 As shown, the system includes a support platform 1, a first telescopic limiting component 2, and a second telescopic limiting component 3. The first telescopic limiting component 2 and the second telescopic limiting component 3 are respectively disposed on the first and second adjacent sides of the support platform 1. The first telescopic limiting component 2 includes a first cylinder 21 and a first baffle 22. The first cylinder 21 is fixedly connected to the lower part of the support platform 1, and the first baffle 22 is vertically disposed on the first piston rod of the first cylinder 21. The upper end of the first baffle 22 is higher than the upper surface of the first side of the support platform 1. The second telescopic limiting component 3 includes a second cylinder 31 and a second baffle 32. The second cylinder 31 is fixedly connected to the lower part of the support platform 1, and the second baffle 32 is vertically disposed on the second piston rod of the second cylinder 31. The upper end of the second baffle 32 is higher than the upper surface of the second side of the support platform 1. A third baffle 4 and a fourth baffle 5 are respectively vertically disposed on the other two sides of the support platform 1. In this embodiment, a first cylinder 21 and a second cylinder 31 are respectively installed on the first and second adjacent sides of the carrying platform 1. The size of the transport trolley can be adjusted by extending and retracting the cylinders to adapt to the transportation requirements of glass of different sizes. At the same time, when picking up and placing glass samples, the cylinders are in the extended and retracted state to facilitate the picking and placing of glass samples. By vertically installing a first baffle 22 and a second baffle 32 on the piston rods of the first cylinder 21 and the second cylinder 31, respectively, and vertically installing a third baffle 4 and a fourth baffle 5 on the other two sides of the carrying platform 1, the glass samples are fixed to prevent the glass from slipping or breaking during transportation.

[0063] This utility model discloses a trolley for transporting photovoltaic glass samples in some embodiments, based on the above embodiments, such as Figure 1 As shown, a first slide groove and a second slide groove can be provided below the support platform 1, and a first slider and a second slider adapted to the first slide groove and the second slide groove can be respectively provided above the first cylinder 21 and the second cylinder 31. The first cylinder 21 is connected to the first slide groove through the first slider, and the second cylinder 31 is connected to the second slide groove through the second slider. Furthermore, the first slide groove is arranged perpendicular to the first side, and the second slide groove is arranged perpendicular to the second side. In addition, a locking device can be provided to lock the position of the slider in the slide groove. Specifically, it includes a first locking device and a second locking device. The first locking device locks the position of the first slider in the first slide groove; the second locking device locks the position of the second slider in the second slide groove. The structural design of the slide groove and the slider further expands the extension range of the trolley. During operation, the cylinder can be slid to an appropriate position as needed, and the slider can be locked by the locking device, for example, by locking the slider with a T-bolt, so as to realize the movement and fixation of the cylinder position.

[0064] This utility model discloses a trolley for transporting photovoltaic glass samples in some embodiments, based on the above embodiments, such as Figure 1 As shown, buffer pads can be provided on the side of the first baffle 22, the second baffle 32, the third baffle 4 and the fourth baffle 5 facing the bearing platform 1 respectively to prevent damage to the glass cross section. The buffer pads are preferably 5mm thick polyurethane pads or silicone pads.

[0065] This utility model discloses a trolley for transporting photovoltaic glass samples in some embodiments, based on the above embodiments, such as Figure 2 As shown, it also includes support columns 6, connecting components 7, movable casters 8, and connecting beams 9. The four support columns 6 are located below the four corners of the load-bearing platform 1, respectively. The upper end of the support column 6 is connected to the load-bearing platform 1 through the connecting components 7. The lower end of the support column 6 is connected to the movable casters 8. A connecting beam 9 is provided between the ends of two adjacent support columns 6 that are close to the movable casters 8.

[0066] This utility model discloses a trolley for transporting photovoltaic glass samples in some embodiments, based on the above embodiments, such as Figure 2 As shown, the connecting component 7 includes a rotary cylinder and a cam, with the cam abutting the lower surface of the support platform 1; the rotary cylinder is fixedly mounted on the upper end of the support column 6; the output gear of the rotary cylinder is connected to and drives the cam to rotate. In this embodiment, the cam is connected to the output gear through conventional techniques in the art, such as a driven gear meshing with the output gear, and the cam is then fixedly connected to the driven gear. Any structure that enables the output gear to drive the cam to rotate should be understood as being within the protection scope of this utility model, and will not be described in detail here.

[0067] Specifically, the rotary cylinder comprises a cylinder barrel, an end cover, a first plug column, a second plug column, a first air cavity, a second air cavity, a third air cavity and a fourth air cavity, wherein the cylinder barrel is sealed by the end cover; the first cavity and the second cavity are arranged in parallel in the cylinder barrel; the first plug column is located in the first cavity, and the first plug column divides the first cavity into the first air cavity and the third air cavity; specifically, the structure of the first plug column can comprise a piston rod in the middle and two movable plug bodies mounted on both ends of the piston rod respectively, and the two movable plug bodies and the wall of the first cavity and both ends form the first air cavity and the third air cavity; the second plug column is located in the second cavity, and the second plug column divides the second cavity into the second air cavity and the fourth air cavity, and the structure of the second plug column is the same as that of the first plug column; the first plug column and the second plug column are columnar pistons, and the piston rod in the middle of the columnar piston is a rack structure; in addition, the end cover is provided with a first air inlet pipe and a second air inlet pipe, the first air inlet pipe communicates with the first air cavity, and the second air inlet pipe communicates with the second air cavity; the inner wall of the cylinder barrel is further provided with a first channel and a second channel, the first channel communicates the first air cavity and the fourth air cavity, and the second channel communicates the second air cavity and the third air cavity. The rotary cylinder further comprises an internal gear and an output gear, a groove is arranged between the first cavity and the second cavity, the internal gear is located in the groove, and the teeth of the internal gear extend out of the groove and extend to the first cavity and the second cavity; the internal gear is meshed with the rack structure of the first plug column and the second plug column respectively; the output gear is located on the outer wall of the rotary cylinder; the internal gear is connected with and drives the output gear to rotate.

[0068] In work, when the bearing platform 1 is inclined, compressed air can be introduced into the first air cavity or the second air cavity to push the corresponding plug column to move, thereby driving the internal gear meshed with the rack structure of the piston rod to rotate, the rotation of the internal gear drives the output gear located on the outer wall of the cylinder barrel to rotate, and the rotation of the output gear further drives the cam to rotate, the rotation of the cam drives the bearing platform 1 connected thereto to move upward or downward, so that the bearing platform 1 is restored to the horizontal direction, and the transportation work can be smoothly carried out. Generally, in order to ensure the stability of the connection between the connecting assembly 7 and the bearing platform 1 and avoid the sliding of the bearing platform 1, an arc-shaped groove can be arranged on the lower surface of the bearing platform 1 near the four corners, and the cam is partially located in the arc-shaped groove.

[0069] Some embodiments of the utility model discloses a trolley for photovoltaic glass sample transportation, on the basis of above-mentioned embodiment, as Figure 1 As shown in the figure, a plurality of concave grooves can be arranged on the bearing platform 1, the universal ball 10 is clamped in the concave groove, and the upper end of the universal ball 10 protrudes from the upper surface of the bearing platform 1 to form a glass contact surface. When the glass sample is placed on the bearing platform 1 or needs to be adjusted on the bearing platform 1, the glass sample directly contacts the surface of the universal ball 10, which can effectively avoid friction and scratching of the glass, and the universal ball 10 is preferably made of nylon material, which is soft and does not damage the surface of the glass.

[0070] The utility model discloses some embodiments of a kind of trolley for photovoltaic glass sample transport, on the basis of above-mentioned embodiment, as shown in Fig. Figure 1 Illustrated, trolley can be aluminium section lap joint frame structure, make trolley overall weight lighter, higher strength, more stable structure, more easily control in transit.

[0071] To sum up, the utility model discloses a kind of trolley for photovoltaic glass sample transport, by cylinder telescopic realization to the size of transport trolley adjustment, to adapt to the transport requirement of different size glass;The setting of each baffle, glass sample can be fixed, prevent the phenomenon such as glass slide, breakage in transport process;By being arranged between bearing platform and support column swing cylinder and cam, can be adjusted to horizontal direction for the bearing platform that occurs inclination, guarantee the stability of transport process;Bearing platform is provided with multiple universal ball, can effectively avoid the friction and scratch on glass surface, the utility model can satisfy various different needs in glass sample transport.

[0072] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.

[0073] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be replaced equivalently without departing from the scope and spirit of the present disclosure. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way.

Claims

1. A trolley for photovoltaic glass sample transportation, characterized in that, Including bearing platform (1), first telescopic limiting component (2) and second telescopic limiting component (3), The first telescopic limiting component (2) and the second telescopic limiting component (3) are respectively arranged on the adjacent first edge and second edge of the bearing platform (1); The first telescopic limiting component (2) includes a first cylinder (21) and a first baffle (22); The first cylinder (21) is fixedly connected below the bearing platform (1), the first baffle (22) is vertically arranged on the first piston rod of the first cylinder (21), and the upper end of the first baffle (22) is higher than the upper surface of the first edge of the bearing platform (1); The second telescopic limiting component (3) includes a second cylinder (31) and a second baffle (32); The second cylinder (31) is fixedly connected below the bearing platform (1), the second baffle (32) is vertically arranged on the second piston rod of the second cylinder (31), and the upper end of the second baffle (32) is higher than the upper surface of the second edge of the bearing platform (1); The other two edges of the bearing platform (1) are respectively provided with a third baffle (4) and a fourth baffle (5) vertically.

2. The trolley for photovoltaic glass sample transportation according to claim 1, characterized in that, The lower side of the bearing platform (1) is provided with a first sliding groove and a second sliding groove, the upper side of the first cylinder (21) and the second cylinder (31) is respectively provided with a first sliding block and a second sliding block matched with the first sliding groove and the second sliding groove, the first cylinder (21) is connected with the first sliding groove through the first sliding block, and the second cylinder (31) is connected with the second sliding groove through the second sliding block. And the first sliding groove is perpendicular to the first edge, and the second sliding groove is perpendicular to the second edge.

3. The trolley for photovoltaic glass sample transportation according to claim 2, characterized in that, Further comprising a first locking device and a second locking device, the first locking device locks the position of the first sliding block in the first sliding groove, and the second locking device locks the position of the second sliding block in the second sliding groove.

4. The trolley for photovoltaic glass sample transportation according to claim 1, characterized in that, The first baffle (22) and the second baffle (32) are provided with a buffer pad on the side facing the bearing platform (1).

5. The trolley for photovoltaic glass sample transportation according to claim 1, characterized in that, The third baffle (4) and the fourth baffle (5) are provided with a buffer pad on the side facing the bearing platform (1).

6. The trolley for photovoltaic glass sample transportation according to claim 1, characterized in that, Further comprising a support column (6), a connecting assembly (7), a movable caster (8) and a connecting beam (9), wherein, Four support columns (6) are respectively located below four corners of the bearing platform (1); The upper end of the support column (6) is connected with the bearing platform (1) through the connecting assembly (7); The lower end of the support column (6) is connected with the movable caster (8); Adjacent two support columns (6) are provided with a connecting beam (9) between one end close to the movable caster (8).

7. The trolley for photovoltaic glass sample transportation according to claim 6, characterized in that, The connecting assembly (7) includes a rotary cylinder and a cam, The cam is in abutment with the lower surface of the bearing platform (1); The rotary cylinder is fixedly installed on the upper end of the support column (6); The output gear of the rotary cylinder is connected and drives the cam to rotate.

8. The trolley for photovoltaic glass sample transportation according to claim 7, characterized in that, The rotary cylinder comprises a cylinder barrel, an end cover, a first plug column, a second plug column, a first air cavity, a second air cavity, a third air cavity and a fourth air cavity, wherein The cylinder barrel is sealed by the end cover; The first cavity and the second cavity are arranged in parallel in the cylinder barrel; The first plug column is located in the first cavity, and the first plug column divides the first cavity into the first air cavity and the third air cavity; The second plug column is located in the second cavity, and the second plug column divides the second cavity into the second air cavity and the fourth air cavity; The first plug column and the second plug column are columnar pistons, and the piston rod in the middle of the columnar pistons is a rack structure; The end cover is provided with a first air inlet pipe and a second air inlet pipe, the first air inlet pipe communicates with the first air cavity, and the second air inlet pipe communicates with the second air cavity; The inner wall of the cylinder barrel is further provided with a first channel and a second channel, the first channel communicates the first air cavity and the fourth air cavity, and the second channel communicates the second air cavity and the third air cavity.

9. The trolley for photovoltaic glass sample transportation according to claim 8, characterized in that, The rotary cylinder further comprises an internal gear and an output gear, A groove is arranged between the first cavity and the second cavity, the internal gear is located in the groove, and the teeth of the internal gear protrude out of the groove and extend to the first cavity and the second cavity; The internal gear is respectively meshed with the rack structure of the first plug column and the second plug column; The output gear is located on the outer wall of the rotary cylinder; The internal gear connects and drives the output gear to rotate.

10. The trolley for photovoltaic glass sample transportation according to claim 1, characterized in that, It also comprises a universal ball (10), The bearing platform (1) is provided with a plurality of concave grooves; The universal ball (10) is clamped in the concave grooves; The upper end of the universal ball (10) protrudes from the upper surface of the bearing platform (1).

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