Replaceable nut connector and connecting assembly comprising same

Abstract

The invention relates to a connector (3) having an exchangeable nut (4), and to a connection assembly (2) for backing plates (1), i.e. For connecting overlapping or non-overlapping backing plates (1). The connector (3) according to the invention comprises two connecting plates (31), at least one replaceable nut (4) and a connecting bolt (5), at least one connecting plate (31) having at least one cutout (32) adapted to receive the replaceable nut (4) and at least one connecting plate (31) having at least one central bore (33). Each connecting plate (31) is fixed in a corresponding recess (6) on the base plate (1). The design of the interchangeable nut (4) in combination with the connecting plate (31) realized by the notches (32) allows for the replacement of a single interchangeable nut (4) on the already assembled backing plate surface without the need to replace the entire connector (3).

Description

Technical Field

[0001] The present invention relates to a replaceable nut connector, a replaceable nut, and a connection assembly for a detachable connection to a pad, wherein the connector is part of the connection assembly. Background Technology

[0002] Replaceable nut connectors (where the connector is part of the connecting assembly) are preferably used for detachable connections of mats that form ground protection / support surfaces. Mats are typically used as load-bearing support surfaces for temporary roads and / or work mat areas, as well as for covering outdoor events such as concerts and sporting events. These mats are usually made of durable materials with an embossed surface texture to improve traction, and the mats can be connected and disconnected using the connecting assembly. This makes installing and removing mats on the ground easy. When interconnected, mats provide a stable support surface for moving vehicles, equipment, and / or personnel, or provide a work surface capable of withstanding heavy loads.

[0003] We know of some backing plates (e.g., Isotrack H) in the prior art, where the backing plates are interconnected by metal connecting strips that can be bolted to integrated and fixed connection positions on both sides of the backing plate. For this purpose, a connector in the form of a metal plate is attached to the backing plate, which has threads for the bolts. If the threads are damaged, the metal plate, i.e., the entire connector, must be replaced. Summary of the Invention

[0004] A connector and the connecting assembly therefrom are required that allow for the replacement of only the nut in case of damage or failure, enable rapid assembly and disassembly of the connecting assembly, assemble the connecting assembly on both sides of the pad so that the pad's usability is maintained regardless of which surface of the pad is used as the driving surface, and improve the connector's tolerances in the longitudinal and lateral directions, thereby avoiding the need for precise alignment of the pad connecting assembly during pad installation.

[0005] The aforementioned technical problem is solved by a connector with a replaceable nut according to the present invention, wherein the connector is part of a connecting assembly for a detachable connection of a pad, and the connection of the pad can be made by overlapping or not overlapping (by contact). Attached Figure Description

[0006] The present invention will be described in detail below and illustrated in the accompanying drawings, which show: Figure 1 An embodiment of a replaceable nut connector and connection assembly for connecting pads by overlapping is shown.

[0007] Figure 2 An embodiment of a replaceable nut connector and connection assembly for connecting pads by means of non-overlapping contact is shown.

[0008] Figure 3 It shows according to Figure 1 The connector.

[0009] Figure 4 It shows according to Figure 2 The connector.

[0010] Figure 5 Replaceable nuts are shown. Detailed Implementation

[0011] The pad 1 is made of any rigid material (preferably a thermoplastic polymer) and can be rectangular, square, hexagonal, or any other shape. When connected on adjacent sides, it allows for coverage of the required floor area, and the connecting components can be disconnected after use. The pads 1 are detachably connected to each other on adjacent sides, wherein two adjacent pads 1 are connected to each other by at least two connecting components 2.

[0012] According to the present invention, the connector 3 having a replaceable nut 4 enables the connecting assembly 2 to connect the pad 1 with or without overlap.

[0013] The pad 1 typically has two different running surfaces: one surface for "rubber tire use" and the other surface for "steel track use". The surface of the pad 1 is preferably designed to be raised on both sides, that is, to have protrusions 12 extending above the surface of the pad 1 to improve traction. Thus, when the pads 1 are joined by overlapping, the corresponding overlapping portions of the surfaces of individual pads 1 are made without protrusions 12, so that one pad 1 can rest on another pad 1, that is, only the portion on the surface of an individual pad 1 where the two pads 1 are joined by overlapping.

[0014] The connector 3, as part of the connecting assembly 2 for the detachable connection of the pad 1, includes two connecting plates 31, at least one replaceable nut 4, and a connecting bolt 5, wherein at least one connecting plate 31 has at least one notch 32 adapted to receive the replaceable nut 4, and at least one connecting plate 31 has at least one central hole 33. Preferably, the connector 3 is made of a metallic material.

[0015] Alternatively, a washer 52 may be placed below the head 51 of the connecting bolt 5.

[0016] The replaceable nut 4 is made as a single piece with a through hole 41 symmetrical about the x-axis, and includes a first section 42, a central section 43 and a second section 44.

[0017] The first section 42 and the second section 44 of the replaceable nut 4 are basically made into the form of a cylinder with a through hole 41. Their outer diameter R is greater than the width W1 of the notch 32, so that when the replaceable nut 4 is inserted into the notch 32, it rests on the connecting plate 31 with the notch 32 in the first section 42 or the second section 44.

[0018] The central section 43 of the replaceable nut 4 is formed into a body having a through hole 41 and a flat bottom and top surface. The first section 42 and the second section 44 of the replaceable nut 4 are connected via the central section 43, such that a groove 45 is formed between a corresponding portion of the upper surface of the first section 42, a corresponding portion of the lower surface of the second section 44, and the outer periphery of the body. The groove 45 is limited on its upper and lower sides by the corresponding flat surfaces of the first section 42 and the second section 44, and the inner surface of the groove 45 (i.e., the outer surface of the body) has a semi-circular shape. The outer width W2 of the body in the direction in which the replaceable nut 4 is inserted into each notch 32 is slightly smaller than the width W1 of the notch 32, and the height H of the groove 45 is slightly higher than the thickness D of the connecting plate 31 with the notch 32, so as to allow the replaceable nut 4 to be inserted into and move along the notch 32, while preventing the replaceable nut 4 from rotating within the notch 32. The length L of the notch 32 is at least equal to the outer diameter R of the first section 42 and the second section 44 of the replaceable nut 4.

[0019] The through hole 41, which is symmetrical about the z-axis, has threads along its entire inner surface for thread engagement with the connecting bolt 5.

[0020] Each connecting plate 31 is fixedly attached to a pre-fabricated connection point provided on the pad 1. For this purpose, each pad 1 has a connection point designed as a recess 6 for detachable connection, having at least one connection hole 61. The recess 6 is preferably located at the edge of a side of the pad 1. When the pads 1 are connected by overlapping, the recess 6 is implemented on only one surface of each pad 1, while when the pads 1 are connected without overlapping (i.e. by contact), the recess 6 is implemented on both the top and bottom surfaces of each pad 1. The shape of the recess 6 is adapted to accommodate the corresponding connecting plate 31, thereby adapting the shape of each connecting plate 31 to fit into the corresponding recess 6. The depth of the recess 6, the height of the protrusion 12, and the shape matching of the corresponding connecting plate 31 with the corresponding recess 6 ensure that when the pads 1 are connected, the upper surface of the head 51 of the connecting bolt 5 is flush with or below the height of the protrusion 12 of the pad 1, such that the surface of the metal component is flush with or hidden beneath the available surface of the pad 1.

[0021] The fixed attachment of the connecting plate 31 is preferably made by threaded connection; in this case, each connecting plate 31 includes a fastening hole 34 for bolts 35 or other fastening elements. The fixed attachment of each connecting plate 31 to a dedicated and pre-designed connection point (i.e. to the corresponding recess 6) on the pad 1 can be made from the top side or the bottom side of the pad 1, that is, on the driving surface side or the non-driving surface side of the pad 1.

[0022] Therefore, with the connecting plate 31 inserted, the pad 1 can be used from both sides without further modification of the connecting plate 31. This means that a single connecting plate 31 integrated into the pad 1 can be used as a fixed built-in element in the pad 1, regardless of whether the side of the pad 1 is "rubber-use" or "steel-use". In the case of overlapping connections of the pads 1, the connector 3 includes two identical connecting plates 31, a replaceable nut 4, and a connecting bolt 5. The connecting assembly 2 includes an additional replaceable nut 4. Each connecting plate 31 has a notch 32 and a center hole 33, which is located on the side of each connecting plate 31 opposite to the notch 32. The diameter of the center hole 33 is larger than the diameter of the through hole 41 of the replaceable nut 4, so that the thread of the connecting bolt 5 can more easily mate with the thread of the replaceable nut 4, thereby making it easier to insert the connecting bolt 5 into the thread of the replaceable nut 4.

[0023] A single connecting plate 31 is fixed in a recess 6 in a corresponding pad 1, such that one connecting plate 31 on one pad 1 is rotated 180 degrees relative to another connecting plate 31 on the other pad 1 about the vertical axis z. Therefore, one connecting plate 31 is fixed in a corresponding recess 6 on the upper surface of one pad 1, located at the side edge overlapping with the second pad 1 to be detachably connected, while the other connecting plate 31 is rotated 180 degrees about the z-axis and x-axis and fixed in a corresponding recess 6 on the lower surface of the second pad 1, located at the side edge overlapping with the first pad 1.

[0024] Each pad 1 has a recess 6 with two connecting holes 61, one of which is used in the connecting assembly 2 (one of the connecting holes 61 is functional in the connecting assembly), that is, a connecting bolt 5 is inserted through only one of the connecting holes 61 as a functional bolt, for connecting the two connecting plates 31 into a fixed connection (rigid joint) by means of a replaceable nut 4, depending on which surface of the pad 1 will be used as the driving surface, whether it is the "rubber use" surface or the "steel use" surface.

[0025] In this embodiment, a single recess 6 has a shallower portion and a deeper portion, and both the shallower portion and the deeper portion have a connecting hole 61.

[0026] Each connecting plate 31 has a surface facing the recess 6 in the pad 1, its profile adapted to fit into the recess 6 of the pad 1, such that the surface of each connecting plate 31 is correspondingly shaped with a shallower region and a deeper region, the shallower region having a notch 32 and the deeper region having a central hole 33. When the connecting plate 31 is attached, the deeper region fits into the deeper portion of the recess 6, and the shallower region fits into the shallower portion of the recess 6, the notch 32 being substantially above one of the connecting holes 61, and the central hole 33 being substantially above the other connecting hole 61. The shape fit of the connecting plate 31 into the recess 6 further dissipates the direct load on the pad 1 in the region where the thickness of the pad 1 is reduced due to the recess 6.

[0027] When using the connecting assembly 2 to connect two adjacent pads 1 by overlapping, first insert the replaceable nut 4 into the notch 32 of each connecting plate 31, and then fix each connecting plate 31 into the corresponding recess 6 in the pad 1, such that the notch 32 of one connecting plate 31 into which the replaceable nut 4 is inserted and the center hole 33 of the second connecting plate 31 are substantially above a connecting hole 61 in the recess 6, and the notch 32 of the second connecting plate 31 into which the replaceable nut 4 is inserted and the center hole 33 of the first connecting plate 31 are substantially above a second connecting hole 61 in the recess 6, such that the through hole 41 of each replaceable nut 4 is substantially aligned with the corresponding connecting hole 61 in the recess 6 and the corresponding center hole 33 of the corresponding connecting plate 31.

[0028] Depending on the selection of the surface of the pad 1 used as the driving surface, only the corresponding connecting hole 61 in the connecting assembly 2 receives the connecting bolt 5, that is, only one of the connecting holes 61 is used in the connecting assembly 2.

[0029] As previously stated, the depth of a single recess 6 is such that when the pad 1 is connected, the upper surface of the head 51 of the connecting bolt 5 and the upper surface of the additional replaceable nut 4 are flush with or below the height of the protrusion 12 of the pad 1.

[0030] The two center holes 33, combined with the 180-degree rotation of the two connecting plates 31 and the additional replaceable nuts 4, allow the pad 1 to be connected by the connecting assembly 2 to form a support surface when the pad 1 is connected by overlapping connection, regardless of which surface of the pad 1 will be used as the driving surface, i.e., the "rubber use" surface or the "steel use" surface.

[0031] By adjusting the length L of the notch 32 and the diameter of the center hole 33 of the connecting plate 31, a certain amount of maneuvering space is provided for the connecting plate 31 to move in the longitudinal and transverse directions, thereby avoiding the need for precise alignment of the center hole 33.

[0032] The attachment of each connecting plate 31 to the intended position on the pad 1 can be made from the top side or the bottom side of the pad 1, that is, on the driving surface side of the pad 1 or on the non-driving surface side of the pad 1.

[0033] exist Figure 1 In the overlapping embodiment shown, the attachment of the connecting plate 31 to the pad 1 is performed from the bottom side (i.e., the side of the pad 1 that is not on the driving surface). The attachment method is such that the bolts 35 used to fasten the individual connecting plates 31 are flush with the surface of the pad 1 after tightening. That is, the bolts 35 (whether front or rear) do not extend above the bottom or top surface of the pad 1. This ensures that the overlapping surfaces of the pads 1 rest against each other. When it is necessary to replace the replaceable nut 4, unscrew the connecting bolts 5, separate or simply lift the pad 1, unscrew the bolts 35 used to fix the connecting plate 31, replace the replaceable nut 4 in the connecting plate 31, screw the connecting plate 31 back onto the pad 1, and then screw the connecting bolts 5 back on.

[0034] When the connecting plate 31 is attached from the top (i.e., on the driving surface of the pad 1), the replacement nut 4 is more straightforward to replace. Unscrew the connecting bolt 5, then unscrew the connecting plate 31, replace the replacement nut 4 in the connecting plate 31, screw the connecting plate 31 back on, and then screw the connecting bolt 5 back on.

[0035] In the case where the pad 1 is connected without overlapping ( Figure 2 The connector 3 includes two connecting plates 31 (one connecting plate 31 has a notch 32, and the other connecting plate 31 has a center hole 33), a replaceable nut 4, and a connecting bolt 5. The connecting assembly 2 includes two connectors 3 and a connecting strip 7 for connecting the two connectors 3. The diameter of the center hole 33 is larger than the diameter of the through hole 41 of the replaceable nut 4 to facilitate the alignment of the threads of the connecting bolt 5 with the replaceable nut 4, thereby facilitating the insertion of the connecting bolt 5.

[0036] Each pad 1 is provided with a connection point for detachable connection with the connecting assembly 2, the connection point being formed as a recess 6 with a connection hole 61. A single connecting plate 31 is fixedly attached to the recess 6 in the corresponding pad 1. Therefore, one connecting plate 31 of the first connector 3 is fixed in a recess 6 opened on the upper surface of a pad 1, located at the side edge that contacts the second pad 1 to be detachably connected, and the other connecting plate 31 of the first connector 3 is fixed in a recess 6 opened on the lower surface of the pad 1, located at the same edge on that side; one connecting plate 3 of the second connector 3 is fixed in a recess 6 opened on the upper surface of the second pad 1, located at the side edge that contacts the first pad 1 to be detachably connected, and the other connecting plate 31 of the second connector 3 is fixed in a recess 6 opened on the lower surface of the second pad 1, located at the same edge on the rear side, and the connecting plate 31 with a notch 32 is fixed in a corresponding recess 6 opened in the adjacent pad 1. These connecting plates are engaged by being located on the same surface of each pad 1. Therefore, the connecting plate 31 with a central hole 33 is fixed in a corresponding recess 6 opened in the adjacent pad 1. These connecting plates are engaged by being located on the same surface of each pad 1.

[0037] The connecting plate 31 of the first connector 3, formed by a notch 32 (which is fixed in a corresponding recess 6 in a pad 1), and the connecting plate 31 of the second connector 3, formed by a notch 32 (which is fixed in a corresponding recess 6 in a second pad 1 that is to be detachably connected), rotate 180 degrees about the z-axis, so that the inlet opening of the notch 32 faces in opposite directions. Since the replaceable nut 4 can move along the corresponding notch 32, it is easier to center and align the through hole 41 with the center hole 33 and the connecting hole 61 to insert the connecting bolt 5, and more maneuverability is obtained in the longitudinal and lateral directions relative to the driving surface, thereby avoiding the need for precise alignment of the center hole 33.

[0038] In this embodiment, the two recesses 6 implemented on a single pad 1 have different shapes. The recess 6 with the connecting plate 31 with notch 32 is formed with a deeper region, while the recess 6 with the connecting plate 31 with central hole 33 is formed with a shallower region.

[0039] In this embodiment, the connecting plate 31 with notch 32 is thus shaped to fit the corresponding recess 6 of the pad 1. The connecting plate 31 with central hole 33 is preferably shaped as a flat plate and engages with the corresponding recess 6 of the pad 1. The shape fit of the connecting plate 31 into the corresponding recess 6 further dissipates the direct load in the area where the thickness of the pad 1 is reduced due to the recess 6. The profile design further allows the metal components to be aligned below the running surface of the pad 1, more specifically below the surface height of the protrusion 12.

[0040] The connecting strip 7 is preferably made into an elongated flat plate with a connecting hole 71 at one end for inserting the connecting bolt 5 and a connecting notch 72 at the opposite end. The length of the connecting strip 7 is at least sufficient to allow a certain gap between the pads 1 when connecting them to accommodate thermal expansion and contraction of the pads 1 due to temperature changes. Preferably, the gap between two adjacent pads 1 should be between 20-30 mm. By adjusting the length of the connecting strip 7, the length of the connecting notch 72, and the length L of the notch 32 on the connecting plate 31 of the two connectors 3 and the diameter of the center hole 33, a certain amount of maneuverability is provided for the adjustment of the connectors 3 relative to the driving surface in the longitudinal and lateral directions, thereby avoiding the need for precise alignment of the center hole 33.

[0041] When connecting two non-overlapping adjacent pads 1, firstly, the replaceable nut 4 is inserted into the notch 32 of each connecting plate 31, and then each connecting plate 31 is fixed in the corresponding recess 6 opened in the pad 1, such that the notch 32 for inserting the replaceable nut 4 (and thus the through hole 41 of the replaceable nut 4) of the connecting plate 31 of the first connector 3 is substantially above the connecting hole 61 of the first pad 1, and the center hole 33 of the connecting plate 31 of the first connector 3 is substantially below the connecting hole 61 of the same pad 1, and the notch 32 for inserting the replaceable nut 4 (and thus the through hole 41 of the replaceable nut 4) of the connecting plate 31 of the second connector 3 is substantially above the connecting hole 61 of the second pad 1, and the center hole 33 of the connecting plate 31 of the second connector 3 is substantially below the connecting hole 61 of the same pad 1, and the connecting plates 31 of the two connectors 3 with notches 32 can rotate 180 degrees relative to each other about a vertical axis. The connecting strip 7 is placed across the two connectors 3 such that the connecting hole 71 is substantially aligned with the through hole 41 of the replaceable nut 4 of the first connector, and the center of the connecting notch 72 is substantially aligned with the through hole 41 of the replaceable nut 4 of the second connector 3. A connecting bolt 5 is inserted through the connecting hole 71, a second connecting bolt 5 is inserted through the connecting notch 72, and each connecting bolt 5 is screwed into the corresponding replaceable nut 4.

[0042] The depth of each recess 6 and the height of the protrusion 12 ensure that when the pad 1 is connected, the top surface of the head 51 of the connecting bolt 5 is not higher than the height of the protrusion 12 of the pad 1.

[0043] The attachment of each connecting plate 31 to the intended position on the pad 1 can be made from the top side or the bottom side of the pad 1, that is, on the driving surface side of the pad 1 or on the non-driving surface side of the pad 1.

[0044] exist Figure 2In the illustrated embodiment, the attachment of the connecting plate 31 of each connector 3 to the upper and lower surfaces of each pad 1 to be connected is achieved by connecting screws 35. When it is necessary to replace the replaceable nut 4, unscrew the two connecting bolts 5, remove the connecting strip 7, separate or simply lift the pad 1, unscrew the connecting screws 35 at the connector 3 where the nut 4 needs to be replaced, replace the replaceable nut 4 in the connecting plate 31, screw the connecting screws 35 and thus the connecting plate 31 back onto the pad 1, place the connecting strip 7 on the two connectors 3, and then screw the two connecting bolts 5 back on.

[0045] In both cases where the pad 1 is connected to the pad surface—namely, by overlapping the pad 1 and by interlocking the pad 1—the connecting assembly 2 can additionally cover it with a thermoplastic covering layer to avoid the so-called "tripping hazard" effect, which may occur when the pad 1 is used as a walking surface for events, concerts, etc. The covering layer is preferably secured simultaneously with the connection bolts 5 connecting the pads 1, such that the heads 51 of the bolts 5 are flush with the upper surface of the pad 1 and recessed into a recess in the upper surface of the covering layer.

[0046] The design of the replaceable nut 4, particularly the groove 45 combined with the design of the connecting plate 31 provided by the notch 32, allows for the replacement of only the individual replaceable nut 4 without replacing the entire connector 3, even if the threads of the replaceable nut 4 are damaged, provided that the pad surface has already been assembled. Furthermore, since the replaceable nut 4 can move along the notch 32, it is easier to align the through hole 41 with the center hole 33 and the connecting hole 61 to insert the connecting bolt 5.

[0047] The aforementioned structure of connector 3, particularly the structure of the connecting plate 31 with notch 32 and the shape of the replaceable nut 4 adapted to the groove 45 of notch 32, and the design of the connecting assembly 2 thus constituted, allows the replaceable nut 4 to be properly positioned relative to notch 32, thereby providing more maneuverability in the longitudinal and lateral directions relative to the travel surface, thus avoiding the need for precise alignment of the connecting hole 61. Furthermore, the aforementioned structure of connector 3 and the connecting assembly 2 thus constituted allows the pad 1 to be used and connected from both sides, regardless of which surface of the pad 1 is selected as the travel surface.

Claims

1. A connector (3) having a replaceable nut (4), wherein the connector (3) is part of a connecting assembly (2) for detachably connecting pads (1) by overlapping or by contact, each pad (1) having a connection point for detachable connection, the connection point being formed as a recess (6) having at least one connection hole (61), characterized in that, The connector (3) includes two connecting plates (31), at least one replaceable nut (4) with a threaded through hole (41), and a connecting bolt (5), wherein at least one connecting plate (31) is provided with at least one notch (32) adapted to receive the replaceable nut (4), and at least one connecting plate (31) is provided with at least one center hole (33), wherein each connecting plate (31) is fixedly attached to a corresponding recess (6) provided in a pad (1), and the fixed attachment of a single connecting plate (31) is arranged such that the notch (32) and / or the center hole (33) of the connecting plate (31) are substantially aligned with at least one connecting hole (61) and the through hole (41) to allow the connecting bolt (5) to be inserted and screwed into the replaceable nut (4).

2. The connector (3) according to claim 1, characterized in that, The replaceable nut (4) is integrally formed symmetrically with respect to the axis (x) and includes a first section (42), a central section (43), and a second section (44), wherein the first section (42) and the second section (44) are substantially cylindrical, wherein their outer diameter (R) is greater than the width (W1) of the notch (32), and the central section (43) is formed into a body having a through hole (41) and having a flat bottom and top surface. The first section (42) and the second section (44) are connected by the central section (43) such that a groove (45) is formed between the corresponding portion of the upper surface of the first section (42), the corresponding portion of the lower surface of the second section (44), and the outer periphery of the body, wherein the groove (45) is on its upper side The lower side is limited by the corresponding flat surfaces of the first section (42) and the second section (44), and the inner surface of the groove (45) has a semi-circular shape, wherein the outer width (W2) of the body in the direction in which the replaceable nut (4) is inserted into each notch (32) is slightly smaller than the width (W1) of the notch (32), the height (H) of the groove (45) is slightly higher than the thickness (D) of the connecting plate (31) with the notch (32) formed, so as to allow the replaceable nut (4) to be inserted into the notch (32) and moved along the notch (32) while preventing the replaceable nut (4) from rotating in the notch (32), and wherein the length (L) of the notch (32) is at least equal to the outer diameter (R) of the first section (42) and the second section (44).

3. The connector (3) according to claim 1 or 2, characterized in that, When the overlapping connecting pads (1) are used, the connector (3) includes two identical connecting plates (31), a replaceable nut (4) and a connecting bolt (5), each connecting plate (31) having a notch (32) and each connecting plate (31) having a center hole (33) on the side of each connecting plate (31) opposite to the notch (32).

4. The connector (3) according to claim 3, characterized in that, A single connecting plate (31) is fixed in a recess (6) in a pad (1) such that a connecting plate (31) is fixed in a corresponding recess (6) on the upper surface of a pad (1) at the side edge overlapping with the second pad (1) to be detachably connected. The second connecting plate (31) is rotated 180 degrees about the z-axis and x-axis and fixed in a corresponding recess (6) on the lower surface of the second pad (1) at the side edge overlapping with the first pad (1). Each recess (6) has a shallower portion and a deeper portion, and both the shallower and deeper portions have connecting holes (61).

5. The connector (3) according to claims 3 and 4, characterized in that, Each connecting plate (31) has a surface of a recess (6) in a mating pad (1) whose profile is adapted to form a shape fit with the recess (6) in the mating pad (1), and the surface of each connecting plate (31) is correspondingly shaped to have a shallower region and a deeper region, wherein the shallower region has a notch (32) and the deeper region has a central hole (33), and wherein, when the connecting plate (31) is attached, the deeper region abuts against the deeper portion of the recess (6) and the shallower region abuts against the shallower portion of the recess (6), wherein the notch (32) is substantially above one of the connecting holes (61) and the central hole (33) is substantially above the other connecting hole (61).

6. The connector (3) according to claim 1 or 2, characterized in that, When the connector (3) is contacted by the connecting pad (1), the connector (3) includes two connecting plates (31), a replaceable nut (4) and a connecting bolt (5), one of the connecting plates (31) having a notch (32) and the other connecting plate (31) having a center hole (33).

7. The connector (3) according to claim 6, characterized in that, A single connecting plate (31) is fixed in a recess (6) formed on a corresponding pad (1), such that a connecting plate (31) is fixed in a recess (6) on the upper surface of the pad (1) at the side edge that contacts the second pad (1) to be detachably connected, and a second connecting plate (31) is fixed in a recess (6) on the lower surface of the pad (1) at the same edge on that side, wherein a single recess (6) has a connecting hole (61), and the recess (6) with the connecting plate (31) with a notch (32) is formed with a deeper portion, and the recess (6) with the connecting plate (31) with a center hole (33) is formed with a shallower portion.

8. The connector (3) according to claims 6 and 7, characterized in that, The connecting plate (31) with a notch (32) is designed to fit into the corresponding recess (6) on the pad (1), and the connecting plate (31) with a center hole (33) is implemented as a flat plate and rests on the corresponding recess (6) on the pad (1).

9. A replaceable nut (4), which is part of a connector (3) of a connecting assembly (2), or part of a connecting assembly (2) for detachably connecting a pad (1) by overlapping or by contact, characterized in that, The nut (4) is integrally formed symmetrically with respect to the axis (x) and includes a first section (42), a central section (43), and a second section (44), wherein the first section (42) and the second section (44) are substantially cylindrical, wherein their outer diameter (R) is greater than the width (W1) of the notch (32), and the central section (43) is formed into a body having a through hole (41) and a flat bottom and top surface. The first section (42) and the second section (44) are connected by the central section (43) such that a groove (45) is formed between the corresponding portion of the upper surface of the first section (42), the corresponding portion of the lower surface of the second section (44), and the outer periphery of the body, wherein the groove (45) is on its upper side and The lower side is limited by the respective flat surfaces of the first section (42) and the second section (44), and the inner surface of the groove (45) has a semi-circular shape, wherein the outer width (W2) of the body in the direction in which the replaceable nut (4) is inserted into each notch (32) is slightly smaller than the width (W1) of the notch (32), the height (H) of the groove (45) is slightly higher than the thickness (D) of the connecting plate (31) with the notch (32) formed, so as to allow the replaceable nut (4) to be inserted into the notch (32) and moved along the notch (32) while preventing the replaceable nut (4) from rotating in the notch (32), and wherein the length (L) of the notch (32) is at least equal to the outer diameter (R) of the first section (42) and the second section (44).

10. A connecting assembly (2) for detachably connecting pads (1) by overlapping, characterized in that, The component (2) includes a connector (3) according to claims 3 to 5 and an additional replaceable nut (4), wherein the replaceable nut (4) is inserted into a notch (32) in each connecting plate (31), and each connecting plate (31) is fixedly attached to a corresponding recess (6) on the pad (1) such that the notch (32) for inserting the replaceable nut (4) in one connecting plate (31) and the center hole (33) in another connecting plate (31) are substantially above a connecting hole (61), wherein the notch (32) for inserting the replaceable nut (4) in the second connecting plate (31) is inserted with the replaceable nut. The notch (32) of (4) and the center hole (33) of the first connecting plate (31) are substantially above the second connecting hole (61), such that the through hole (41) of each replaceable nut (4) is substantially aligned with the corresponding connecting hole (61) and the corresponding center hole (33) of the corresponding connecting plate (31), so that only one connecting hole (61) is functional in the connecting assembly (2), and thus the connecting bolt (5) is inserted and screwed into the replaceable nut (4) through only one of the connecting holes (61), depending on which surface of the pad (1) is used as the driving surface.

11. A connecting assembly (2) for detachably connecting a pad (1) by contact, characterized in that, The component (2) includes two connectors (3) as described in claims 6 to 8 and a connecting plate (7) for connecting the two connectors (3).

12. The connecting component (2) according to claim 11, characterized in that, The connecting strip (7) is made into an elongated flat plate with a connecting hole (71) at one end for inserting a connecting bolt (5) and a connecting notch (72) at the opposite end for inserting a second connecting bolt (5). The length of the connecting strip (7) is such that when the pads (1) are connected, it is possible for there to be a certain gap between the pads (1) to ensure that the pads expand as necessary due to temperature changes.

13. The connecting component (2) according to claims 11 and 12, characterized in that, A replaceable nut (4) is inserted into the notch (32) of each connecting plate (31), and each connecting plate (31) is fixed in the corresponding recess (6) of the pad (1), such that the notch (32) for inserting the replaceable nut (4) (and thus the through hole (41)) of the connecting plate (31) of the first connector (3) is substantially above the connecting hole (61) of the first pad (1), and the center hole (33) of the connecting plate (31) of the first connector (3) is substantially below the connecting hole (61) of the same pad (1), and the notch (32) for inserting the replaceable nut (4) (and thus the through hole (41)) of the connecting plate (31) of the second connector (3) is substantially above the connecting hole (61) of the second pad (1), and the second connector ( 3) The center hole (33) of the connecting plate (31) is substantially below the connecting hole (61) of the same pad (1), and the connecting plates (31) with notches (32) of the two connectors (3) are rotated 180 degrees relative to each other about the vertical axis (z); the connecting strip (7) is placed on the two connectors (3) such that the connecting hole (71) is substantially aligned with the through hole (41) of the replaceable nut (4) of the first connector (3), and the center of the connecting notch (72) is substantially aligned with the through hole (41) of the replaceable nut (4) of the second connector (3), and a connecting bolt (5) is inserted through the connecting hole (71), a second connecting bolt (5) is inserted through the notch (72), and each connecting bolt (5) is screwed into the corresponding replaceable nut (4).

14. The connecting component (2) according to claims 10 to 13, characterized in that, The connecting component (2) is covered with a thermoplastic coating to prevent the so-called "tripping hazard" effect.

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