Compressor pedestal and mounting method therefor, and compressor

Abstract

A compressor pedestal, a mounting method for the compressor pedestal and a compressor are provided. The pedestal include front pedestal (10), a rear pedestal (20) and transitional pedestals (30). The front pedestal (10) and the rear pedestal (20) are both provided on a compressor shell (40) of the compressor and attached to the respective transitional pedestals (30). Each of the front pedestal (10) and the rear pedestal (20) is provided with a foolproof structure (50) uniquely associated with the respective transitional pedestal (30) so that mounting of the transitional pedestals (30) to the front pedestal (10) and the rear pedestal (20) is limited to a mode of mounting. Through adding the foolproof structures (50), the front pedestal (10) and the rear pedestal (20) can be mounted to the respective transitional pedestals (30) only in a single mode. This can prevent operator errors during mounting, and customers' dimensional requirements can be met, resulting in improved user experience. Further, the pedestal can be mounted more efficiently, and frequent switching between different modes of mounting can be dispensed with.

Description

TECHNICAL FIELD

[0001] The present invention relates to the field of compressors and, in particular, to a compressor pedestal, a mounting method for the compressor pedestal and a compressor.BACKGROUND

[0002] A compressor pedestal typically includes a front pedestal and a rear pedestal, which are both attached to a compressor shell. In order to enhance stability of the compressor, transitional pedestals may be added to the front and rear pedestals when the compressor is out of use. These transitional pedestals can increase the distance from the pedestal to the compressor's center of gravity, leading to a larger moment arm.

[0003] However, there are a variety of existing transitional pedestals, which are attached to the front and rear pedestals in different modes. Consequently, during a mounting process, it is frequently found that a mode of mounting for selected transitional pedestals does not match a user's need, for example, due to a distance to the transitional pedestals associated with the mode of mounting, which is incompatible with locating means in the user's system. When this happens, mounting of the compressor may be impossible to carry out.

[0004] In view of this, there is a need in the art to overcome the problem that a compressor could not satisfy a user's need due to a mounting error.SUMMARY

[0005] It is an object of the present invention to provide a compressor pedestal, a mounting method for the compressor pedestal and a compressor, which overcome the problem of proneness to a mounting error due to a great variety of existing transitional pedestals mounted in different modes, which may lead to inability of a compressor to satisfy a user's need.

[0006] To this end, the present invention provides a compressor pedestal, which include a front pedestal, a rear pedestal and transitional pedestals.

[0007] The front and rear pedestals are both provided on a compressor shell and attached to the respective transitional pedestals.

[0008] Each of the front and rear pedestals is provided with a foolproof structure uniquely associated with the respective transitional pedestal so that mounting of the transitional pedestals to the front and rear pedestals is limited to a mode of mounting.

[0009] Optionally, the foolproof structures may be raised over the front and rear pedestals, wherein each of the transitional pedestals is provided with an error-proof hole, and the mounting is carried out so that the foolproof structures are inserted in the respective error-proof holes.

[0010] Optionally, the front pedestal may include a first connection segment and a second connection segment, the first connection segment adapted for attachment to the compressor shell, the second connection segment adapted for attachment to the respective transitional pedestal, and the rear pedestal may include a disk segment and a fixation portion, the disk segment adapted for attachment to the compressor shell, the fixation portion adapted for attachment to the respective transitional pedestal, wherein the foolproof structures are respectively provided on the second connection segment and the fixation portion.

[0011] Optionally, the foolproof structure on the second connection segment may extend at an angle with respect to the second connection segment, and the foolproof structure on the fixation portion may extend at an angle with respect to the fixation portion.

[0012] Optionally, each of the front and rear pedestals may be provided with first connection holes, and each of the transitional pedestals may be provided with second connection holes, wherein the pedestal include fasteners, which are inserted through the first and second connection holes, thereby attaching the front and rear pedestals to the respective transitional pedestals.

[0013] Optionally, each of the transitional pedestals may include a connection portion, in which the error-proof hole and the second connection holes are all provided, and which is attached to the second connection segment and is raised over the rest of the transitional pedestal.

[0014] Optionally, there may be two second connection holes in the connection portion, wherein if a thickness of the foolproof structure is denoted as d1, a maximum distance from the foolproof structure to a center of the first connection hole as d2 and distances from centers of the two second connection holes to edges of the connection portion respectively as L1, L2, L3 and L4, then d2-d1≤L1, d2-d1≤L2, d2-d1≤L3, d2-d1≤L4 are satisfied.

[0015] Optionally, if a width of the foolproof structure is denoted as d3, a maximum distance from the error-proof hole to the center of one of the second connection holes as L5, a length of the error-proof hole as L6 and a width of the error-proof hole as L7, then d2-d1≥L5-L7, d2≤L5, d3≤L6 may be satisfied.

[0016] To the above end, the present invention also provides a compressor including the pedestal as defined above.

[0017] To the above end, the present invention also provides a mounting method for the compressor pedestal as defined above, which includes: inserting the foolproof structures into the respective error-proof holes in the transitional pedestals; and inserting the fasteners through the first and second connection holes, thereby attaching the front and rear pedestals to the respective transitional pedestals.

[0018] Compared with conventional compressor pedestal, the proposed pedestal, method and compressor have the advantages as follows: Through adding the foolproof structures to the front and rear pedestals, the transitional pedestals can be mounted to the front and rear pedestals only in a single mode. This can prevent operator errors during mounting, providing foolproof mounting. Thus, customers' dimensional requirements can be met, resulting in improved user experience. Further, the pedestal can be mounted more efficiently, and frequent switching between different modes of mounting can be dispensed with.

[0019] In the compressor, since the foolproof structures are added to the front and rear pedestals, the transitional pedestals can be mounted to the front and rear pedestals only in a single mode, reducing the probability of an operator error during the mounting. In this way, the customer's dimensional requirements can be met, resulting in improved user experience.

[0020] In the method, since the pedestal can be mounted only in a single mode, customer needs can be effectively satisfied, and errors that may make the compressor impossible to use can be avoided during mounting, resulting in improved foot mounting efficiency for the compressor.BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Fig. 1 schematically illustrates a compressor pedestal according to an embodiment of the present invention. Fig. 2 schematically illustrates a front pedestal according to an embodiment of the present invention. Fig. 3 schematically illustrates a rear pedestal according to an embodiment of the present invention. Fig. 4 schematically illustrates a transitional pedestal according to an embodiment of the present invention. Fig. 5 schematically illustrates how a transitional pedestal is mounted to a front pedestal according to an embodiment of the present invention. Fig. 6 shows a front view of a front pedestal according to an embodiment of the present invention. Fig. 7 shows a side view of a front pedestal according to an embodiment of the present invention. Fig. 8 shows a top view of a transitional pedestal according to an embodiment of the present invention. Fig. 9 schematically illustrates a compressor according to an embodiment of the present invention. Fig. 10 is a flowchart of a method of mounting a compressor pedestal according to an embodiment of the present invention. List of Reference Numerals

[0022] 10 front pedestal; 100 first connection segment; 101 second connection segment; 102 transition segment; 20 rear pedestal; 200 disk segment; 201 fixation segment; 30 transitional pedestal; 300 fixation portion; 301 connection portion; 302 error-proof hole; 40 compressor shell; 400 top cover; 50 foolproof structure; 60 first connection hole; 70 second connection hole; 80 fastener; 90 elastic pedestal. DETAILED DESCRIPTION

[0023] Objects, advantages and features of the present invention will become more apparent upon reading the following more detailed description with reference to the accompanying drawings, which illustrate particular embodiments thereof. Note that the figures are provided in a very simplified form not necessarily drawn to exact scale for the only purpose of helping to explain the disclosed embodiments in a more convenient and clearer way. In addition, the illustrated structures are usually part of their real-world counterparts. In particular, as the figures tend to have distinct emphases, they are sometimes drawn to different scales.

[0024] As used herein, the singular forms "a", "an" and "the" include plural referents, and the term "or" is generally employed in the sense of "and / or", "a number of" of "at least one" and "at least two" of "two or more". Additionally, the use of the terms "first", "second" and "third" herein is intended for illustration only and is not to be construed as denoting or implying relative importance or as implicitly indicating the numerical number of the referenced items. Accordingly, defining an item with "first", "second" or "third" is an explicit or implicit indication of the presence of one or at least two such items. The terms "one end" and "the other end", as well as "proximal end" and "distal end", may be used herein to generally refer to corresponding end portions, rather than precisely to the endpoints. The terms "mounted", "coupled", "connected" and variants thereof should be interpreted in a broad sense. For instance, a connection may be a permanent, detachable or integral connection, or a direct or indirect connection with one or more intervening media, or an internal communication or interaction between two elements. When an element is referred to herein as being "disposed" on another element, this is generally intended to only mean that there is a connection, coupling, engagement or transmission relationship between the two elements, which may be either direct or indirect with one or more intervening elements, and should not be interpreted as indicating or implying a particular spatial position relationship between them. That is, the element may be located inside, outside, above, under, beside, or at any other location relative to the other element, unless the context clearly dictates otherwise. The directional terms such as "upper", "lower", "top", "bottom" and the like are generally used in relation to the direction of gravity. The terms "vertical" and "vertical direction" generally refer to a direction parallel to the direction of gravity, which is typically perpendicular to the ground. The terms "horizontal" and "horizontal direction" generally refer to a direction parallel to the ground. Those of ordinary skill in the art can understand the specific meanings of the above-mentioned terms herein, depending on their context.

[0025] It is an object of the present invention to provide a compressor pedestal, a mounting method for the compressor pedestal and a compressor, which overcome the problem of proneness to a mounting error due to a great variety of existing transitional pedestals mounted in different modes, which may lead to inability of a compressor to satisfy a user's need.

[0026] Those skilled in the art will understand that a compressor usually has a front pedestal and a rear pedestal, which have been connected to a compressor shell before the latter is delivered from the factory. Conventionally, transitional pedestals may be added to enhance the compressor's stability by increasing the distance from its pedestal to its center of gravity, leading to larger moment arm. Existing transitional pedestals typically include fixation portions and a connection portion. Elastic pedestals are attached to the fixation portions, and the connection portion is attached to a front or rear pedestal. The connection portion is raised away from the compressor shell, compared with the fixation portions. This imparts a degree of resilience, which enables absorption of possible vibrations and shocks, in addition to stability of the compressor. However, currently available transitional pedestals all have a number of connection holes and are hence mounted in a variety of different modes, which are associated with different resulting compressor shell-to-transitional pedestal distances. Consequently, once a selected distance does not match the system's position requirements, mounting of the compressor may become impossible, affecting the user's experience. In view of this, embodiments disclosed herein provide a compressor pedestal, a mounting method for the compressor pedestal and a compressor, which employ foolproof structures added to front and rear pedestals. The foolproof structures can be inserted into associated transitional pedestals during a mounting process so that the process must be carried out in a single desired mode, avoiding mounting efficiency from being degraded due to an operator error, which may otherwise occur during the mounting process.

[0027] Referring to Figs. 1 to 4, the present invention provides a compressor pedestal, which include a front pedestal 10, a rear pedestal 20 and transitional pedestals 30. Both the front pedestal 10 and the rear pedestal 20 are provided on a compressor shell 40, and the transitional pedestals 30 are attached respectively to the front pedestal 10 and the rear pedestal 20. Each of the front pedestal 10 and the rear pedestal 20 is provided with a foolproof structure 50 uniquely associated with the respective transitional pedestal 30. With these foolproof structures 50, the transitional pedestals 30 can be mounted to the front pedestal 10 and the rear pedestal 20 only in a single mode. In an optional embodiment, the foolproof structures 50 respectively project from the front pedestal 10 and the rear pedestal 20, and each of the transitional pedestals 30 is provided therein with an error-proof hole 302. During mounting, the foolproof structures 50 can be inserted into the respective error-proof holes 302. As can be seen from Fig. 1, in an exemplary embodiment, the front pedestal 10 is arranged around a top cover 400 of the compressor shell 40 and is shaped like the Greek letter "Ω" (see Fig. 2). It has a first connection segment 100 and second connection segments 101. The first connection segment 100 is raised toward the compressor shell 40, compared with the second connection segments 101. The first connection segment 100 is secured to the compressor shell 40. The second connection segments 101 are connected to the respective transitional pedestal 30, and the foolproof structure 50 is provided on one of the second connection segments 101. The rear pedestal 20 is arranged on the side of the compressor shell 40 away from the top cover 400 and has a disk segment 200 and fixation segments 201 (see Fig. 3). The disk segment 200 is fixedly connected to the compressor shell 40, and the fixation segments 201 extend from one side of the disk segment 200 and are arranged perpendicular to the disk segment 200. The foolproof structure 50 is provided on one of the fixation segments 201. The transitional pedestals 30 are attached respectively to the front pedestal 10 and the rear pedestal 20 and each have fixation portions 300 and a connection portion 301. The fixation portions 300 are connected to elastic pedestals 90, and the connection portion 301 is attached to the second connection segments 101 of the front pedestal 10, or to the fixation segments 201 of the rear pedestal 20. The error-proof hole 302 is provided in the connection portion 301. In order to mount the transitional pedestals 30 respective to the front pedestal 10 and the rear pedestal 20, the foolproof structures 50 are inserted into the respective error-proof holes 302, preventing the mounting from occurring in any other mode. In this way, the mounting of the transitional pedestals 30 to the front pedestal 10 and the rear pedestal 20 can be carried out only in a single mode, preventing any operator error, which may affect the user's experience.

[0028] In an optional embodiment, referring to Figs. 2 to 4, each foolproof structure 50 is a cross-sectionally rectangular bent structure extending at an angle with respect to the second connection segment 101 or the fixation segment 201. In the exemplary embodiment of Fig. 2, the foolproof structure 50 extends perpendicular to the second connection segment 101 toward a contact surface thereof with the connection portion 301. In the exemplary embodiment of Fig. 3, the foolproof structure 50 extends perpendicular to the fixation segment 201 towards a contact surface between the fixation segment 201 and the connection portion 301. In the exemplary embodiment of Fig. 4, the error-proof holes 302 are rectangular openings complementary in shape to the respective foolproof structures 50. In other embodiments, the foolproof structures 50 may have a different shape, and the error-proof holes 302 may have a correspondingly complementary shape. It should be noted that the foolproof structures 50 and the error-proof holes 302 may serve only to provide an operator with an indication, rather than necessarily actually mating with each other. For example, the error-proof holes 302 may be replaced with recesses, rather than being implemented as through openings. Accordingly, instead of being inserted through the openings, the foolproof structure 50 may be only aligned with or placed in a different relationship with the recesses. Alternatively, the foolproof structures 50 may consist of multiple convexities and concavities. The convexities may be provided on the front and rear pedestals 10, 20 and the concavities in the transitional pedestals 30; and vice versa. With the convexities and concavities, mounting can also be carried out in a single mode. For example, the concavities may correspond to the respective convexities, and the mounting may be achieved so that the concavities are received in the convexities with abutment between their surfaces. Those skilled in the art may adopt any suitable implementation, and the present invention is not limited in this regard.

[0029] Referring to Fig. 5, each of the front pedestal 10 and the rear pedestal 20 has first connection holes 60, and each transitional pedestal 30 has second connection holes 70. The pedestal further includes fasteners 80. The fasteners 80 are inserted through the first connection holes 60 and the second connection holes 70, connecting the transitional pedestals 30 respectively to the front pedestal 10 and the rear pedestal 20. In one embodiment, the fasteners 80 are bolts. The front pedestal 10 has two first connection holes 60 in the two respective second connection segments 101, and the rear pedestal 20 has two first connection holes 60 in the two respective fixation segments 201. Each transitional pedestal 30 has two second connection holes 70 in its connection portion 301. Each fastener 80 is inserted through one first connection hole 60 and one second connection hole 70. Thus, the mounting of the front pedestal 10 to the respective transitional pedestal 30 requires the use of two fasteners 80, and the mounting of the rear pedestal 20 to the respective transitional pedestal 30 also requires the use of two fasteners 80. In some alternative embodiments, the numbers of fasteners 80 may depend on the shapes of the front pedestal 10, the rear pedestal 20 and the transitional pedestals 30 and on the numbers of first connection holes 60 and second connection holes 70, and the present invention is not limited in this regard.

[0030] Dimensions of the foolproof structure 50 and the error-proof hole 302 for the front pedestal 10 are further described below with reference to Figs. 2, 4 and 6 to 8. Although only the front pedestal 10 is described below, the description equally applies to the rear pedestal 20.

[0031] In an optional embodiment, the foolproof structure 50 is provided on one of the second connection segments 101 and extends at angle with respect to the second connection segment 101. The front pedestal 10 further includes transition segments 102, and the second connection segments 101 are connected to opposite ends of the first connection segment 100 by the respective transition segments 102. Each transition segment 102 extends at an angle with respect to each of the first connection segment 100 and the respective second connection segment 101. In the respective transitional pedestal 30, the error-proof hole 302 and the second connection holes 70 are all provided in the connection portion 301. The connection portion 301 is attached to the second connection segments 101. The connection portion 301 is raised over the rest of the transitional pedestal 30. In the embodiment of Fig. 2, the foolproof structure 50 extends perpendicular to the second connection segment 101, and the transitional pedestal 30 is mounted to the front pedestal 10 so that the foolproof structure 50 is inserted in the error-proof hole 302. In some other embodiments, the foolproof structure 50 may extend at any other suitable angle with respect to the second connection segment 101, as long as it is ensured that the foolproof structure 50 extends toward a surface of the transitional pedestal 30, at which it is mounted to the front pedestal 10, and thereby interacts with the error-proof hole 302 to provide the foolproof function. With continued reference to Fig. 2, the transition segments 102 extend almost perpendicular to the first connection segment 100 and the second connection segments 101 so that the front pedestal 10 generally resembles the Greek letter "Ω". In an alternative embodiment, the transition segments 102 may also extend at different angles with respect to the first connection segment 100 and the second connection segments 101. Referring to Fig. 4, the connection portion 301 is raised over the fixation portions 300 toward the compressor shell 40. In this way, it not only ensures desirable stability of the compressor, but is also able to cooperate with the elastic pedestals 90 connected to the fixation portions 300 to provide resilience, which can suppress vibrations and impacts that may occur during operation.

[0032] In an optional embodiment, referring to Figs. 6 and 8, if a thickness of the foolproof structure 50 is denoted as d1, a maximum distance from the foolproof structure 50 to the center of the first connection hole 60 as d2, and distances from the centers of the two second connection holes 70 in the connection portion 301 to edges of the connection portion 301 as L1, L2, L3 and L4, then d2-d1≤L1, d2-d1≤L2, d2-d1≤L3 and d2-d1≤L4 are satisfied. With this arrangement, the transitional pedestal 30 can be mounted to the front pedestal 10 only in a single mode, and mounting in any other mode will be impossible due to interference. In alternative embodiments, other dimensions are also possible, without departing from the scope of the present invention.

[0033] In an alternative optional embodiment, if a width of the foolproof structure 50 is denoted as d3, a maximum distance from the error-proof hole 302 to the center of the second connection hole 70 as L5, a length of the error-proof hole 302 as L6 and a width of the error-proof hole 302 as L7, then d2-d1≥L5-L7, d2≤L5 and d3≤L6 are satisfied. With this arrangement, the error-proof hole 302 matches the foolproof structure 50 on the front pedestal 10, and the transitional pedestal can be mounted to the front pedestal 10 only in a single mode. In alternative embodiments, other dimensions are also possible, without departing from the scope of the present invention.

[0034] Embodiments herein also provide a compressor including the pedestal as discussed above, as shown in Fig. 9. The foolproof structures 50 added to the front pedestal 10 and the rear pedestal 20 allow the transitional pedestals 30 to be mounted to the front pedestal 10 and the rear pedestal 20 only in a single mode, reducing the probability of an operator error during the mounting. In this way, the customer's dimensional requirements can be met, resulting in improved user experience.

[0035] Referring to Fig. 10, embodiments herein also provide a mounting method for the compressor pedestal of the compressor as discussed above, which include: inserting the foolproof structures 50 into the respective error-proof holes 302 in the transitional pedestals 30; and inserting the fasteners 80 through the first connection holes 60 and the second connection holes 70, thereby attaching the transitional pedestals 30 to the front pedestal 10 and the rear pedestal 20.

[0036] Since the pedestal can be mounted only in a single mode, customer needs can be effectively satisfied, and errors that may make the compressor impossible to use can be avoided during mounting, resulting in improved foot mounting efficiency for the compressor.

[0037] As noted above, embodiments herein provide a compressor pedestal, a mounting method for the compressor pedestal and a compressor. The pedestal include a front pedestal, a rear pedestal and transitional pedestals. The front and rear pedestals are both provided on a compressor shell and attached to the respective transitional pedestals. Each of the front and rear pedestals is provided with a foolproof structure uniquely associated with the respective transitional pedestal. With these foolproof structures, the transitional pedestals can be mounted to the front and rear pedestals only in a single mode.

[0038] Through adding the foolproof structures to the front and rear pedestals, the transitional pedestals can be mounted to the front and rear pedestals only in a single mode. This can prevent operator errors during mounting, providing foolproof mounting. Thus, customers' dimensional requirements can be met, resulting in improved user experience. Further, the pedestal can be mounted more efficiently, and frequent switching between different modes of mounting can be dispensed with.

[0039] The description presented above is merely that of a few preferred embodiments of the present invention and is not intended to limit the scope thereof in any sense. Any and all changes and modifications made by those of ordinary skill in the art based on the above teachings fall within the scope of the invention.

Claims

1. A compressor pedestal, comprising a front pedestal, a rear pedestal and transitional pedestals, the front pedestal and the rear pedestal both provided on a compressor shell, and the front pedestal and the rear pedestal respectively connected to the transitional pedestals, each of the front pedestal and the rear pedestal provided with a foolproof structure uniquely associated with the respective transitional pedestal so that mounting of the transitional pedestals to the front pedestal and the rear pedestal is limited to a mode of mounting.

2. The compressor pedestal of claim 1, wherein the foolproof structures are raised over the front pedestal and the rear pedestal, each of the transitional pedestals provided with an error-proof hole, and the foolproof structures passing through the respective error-proof holes during the mounting.

3. The compressor pedestal of claim 2, wherein the front pedestal comprises a first connection segment and a second connection segment, the first connection segment adapted for connecting to the compressor shell, the second connection segment adapted for connecting to the respective transitional pedestal, and the rear pedestal comprises a disk segment and a fixation segment, the disk segment adapted for connecting to the compressor shell, the fixation segment adapted for connecting to the respective transitional pedestal, wherein the foolproof structures are respectively provided on the second connection segment and the fixation segment.

4. The compressor pedestal of claim 3, wherein the foolproof structure on the second connection segment extends at an angle with respect to the second connection segment and the foolproof structure on the fixation segment extends at an angle with respect to the fixation segment.

5. The compressor pedestal of claim 3, wherein each of the front pedestal and the rear pedestal is provided with first connection holes and each of the transitional pedestals is provided with second connection holes, wherein the compressor pedestal further comprises fasteners, which sequentially pass through the first connection holes and the second connection holes to respectively realize the connection between the front pedestal and the rear pedestal and the transitional pedestals.

6. The compressor pedestal of claim 5, wherein each of the transitional pedestals comprises a connection portion, the error-proof hole and the second connection holes all provided in the connection portion, and the connection portion is connected to the second connection segment and protrudes relative to other parts of the transitional pedestal.

7. The compressor pedestal of claim 6, wherein a thickness of the foolproof structure is denoted as d1, a maximum distance from the foolproof structure to a center of the first connection hole denoted as d2 and distances from centers of the two second connection holes to edges of the connection portion respectively denoted as L1, L2, L3 and L4, then d2-d1≤L1, d2-d1≤L2, d2-d1≤L3, d2-d1≤L4 are satisfied.

8. The compressor pedestal of claim 7, wherein a width of the foolproof structure is denoted as d3, a maximum distance from the error-proof hole to the center of one of the second connection holes denoted as L5, a length of the error-proof hole denoted as L6 and a width of the error-proof hole denoted as L7, then d2-d1≥L5-L7, d2≤L5, d3 ≤L6 are satisfied.

9. The compressor pedestal of claim 2, wherein the error-proof holes are rectangular opening complementary in shape with the respective foolproof structures.

10. The compressor pedestal of claim 1, wherein each of the transitional pedestals is provided with an error-proof hole, and the error-proof hole is in the form of a recess.

11. The compressor pedestal of claim 1, wherein each of the transitional pedestals is provided with an error-proof hole, and the error-proof hole is in the form of a through opening matching the respective foolproof structure, wherein the foolproof structures are only aligned with the respective through openings during the mounting.

12. A compressor, comprising the compressor pedestal of any one of claims 1 to 11.

13. A mounting method for the compressor pedestal of any one of claims 1 to 11, comprising: respectively passing the foolproof structures through error-proof holes of the transitional pedestals; and respectively passing fasteners through first connection holes and second connection holes, thereby connecting the front pedestal and the rear pedestal to the respective transitional pedestals.

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