A fixing fixture for refrigeration equipment maintenance

Abstract

The present invention provides a fixing fixture for repairing refrigeration equipment, which relates to the technical field of fixing fixtures, and solves the problems that the existing fixing fixtures have some inconveniences when testing air conditioners of different sizes, and the inspection platform cannot be rotated, requiring workers to walk back and forth. A fixing fixture for repairing refrigeration equipment includes a fixing seat; the fixing seat body is a circular plate-shaped structure, the surface of the fixing seat is provided with a circular groove, and a first support rod is fixedly installed in the middle position of the upper end surface of the fixing seat. In the present invention, the fixed iron plate at the upper end of the first support rod is rotatably connected to the clamping block at the lower end of the inspection platform, so that the inspection platform can rotate around the first support rod, so that when inspecting the back of the air conditioner, the worker does not have to walk to the back of the air conditioner, which can save physical strength and time.

Description

Technical Field

[0001] The invention belongs to the technical field of fixing clamps, in particular to a fixing clamp for repairing refrigeration equipment. Background Art

[0002] After a refrigeration air conditioner breaks down, it needs to be inspected and repaired. During the inspection and repair, the air conditioner needs to be fixed. However, the existing fixing fixtures have some shortcomings in use.

[0003] The existing fixing fixture has the following shortcomings in use:

[0004] First, air conditioners of different specifications have different sizes, which makes it inconvenient for workers to test air conditioners of different sizes;

[0005] Second, when workers are repairing the back of the air conditioner, they need to walk to the back of the air conditioner. When workers walk back and forth, they not only consume physical strength, but also waste time;

[0006] Third, workers will use a lot of tools during maintenance, and these tools are scattered on the maintenance table. It is inconvenient for workers to take them, and it is easy for them to lose the tools during the later sorting. Summary of the invention

[0007] The purpose of the present invention is to solve the above problems. The present invention provides a fixing clamp for repairing refrigeration equipment, which solves the inconvenience of the existing fixing clamp when testing air conditioners of different sizes, the problem that the maintenance table cannot be rotated and needs to be moved back and forth, and the lack of storage device makes it inconvenient for workers to repair the maintenance tools scattered on the maintenance table.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solutions: a fixing fixture for refrigeration equipment maintenance, comprising a fixing seat;

[0009] The fixing seat body is a circular plate structure, a circular groove is provided on the surface of the fixing seat, and a first support rod is fixedly installed at the middle position of the upper end surface of the fixing seat;

[0010] The inspection platform is a rectangular structure, the upper end surface of the inspection platform is provided with two first track grooves, the first track grooves are T-shaped structures, and the first track grooves are internally slidably mounted with fastening blocks, and the lower end surface of the inspection platform is also provided with three second support rods, and the three second support rods are arranged in a ring structure;

[0011] A placing plate, wherein two groups of placing plates are symmetrically arranged, two connecting holes are installed on the upper end surface of the placing plate, two fixed vertical plates are symmetrically installed on the upper end surface of the placing plate, and a through-shaped second track groove is opened on the surface of the fixed vertical plate;

[0012] A connecting block, wherein a through hole is provided in the middle of the connecting block, two through-shaped limiting holes are symmetrically provided inside the connecting block, and a threaded hole is also provided inside the connecting block, and the threaded hole is connected to the through hole in the middle of the connecting block;

[0013] Limit rods, wherein two groups of limit rods are symmetrically arranged, the limit rods are slidably mounted in the limit holes inside the connecting block, and the outer end surfaces of the two limit rods are connected to the stop block by bolts;

[0014] The pressure plate is provided with two, and the outer end surface of the pressure plate is fixedly connected with two limit rods.

[0015] Furthermore, a fixed iron plate is fixedly installed on the top of the first support rod, and a clamping block is installed in the middle position of the lower end surface of the inspection platform. A clamping groove is opened inside the clamping block, and the fixed iron plate is clamped in the clamping groove inside the clamping block. A magnet is also provided inside the clamping block, and the inner end surface of the magnet is in contact with the outer end surface of the fixed iron plate.

[0016] Furthermore, fixing teeth are evenly installed inside the groove on the surface of the fixing seat, and one-way elastic teeth are installed at the lower end of the second support rod, and the one-way elastic teeth are meshed with the fixing teeth.

[0017] Furthermore, a fastening screw is installed on the upper end surface of the fastening block, and the upper end of the fastening screw passes through the connecting hole on the surface of the placement plate and is fastened by a nut.

[0018] Furthermore, a connecting screw is installed on both end surfaces of the connecting block respectively, and the connecting screw is slidably mounted in the second track groove on the surface of the fixed vertical plate.

[0019] Furthermore, a through hole is provided in the middle of the stopper, a power screw is installed inside the through hole, and the front end of the power screw is threadedly connected to the threaded hole inside the connecting block.

[0020] Furthermore, the inner end surface of the pressure plate is provided with a rubber strip, which is arranged in a cross structure, and a clamping ring is also installed on the top end surface of the fixed vertical plate.

[0021] Furthermore, two connecting transverse plates are symmetrically installed at left and right positions on the lower end surface of the inspection platform, and hooks are evenly installed on the lower end surfaces of the connecting transverse plates.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] In the present invention, the fixed iron plate at the upper end of the first support rod is rotatably connected to the clamping block at the lower end of the inspection platform, so that the inspection platform can rotate around the first support rod, so that when inspecting the back of the air conditioner, the workers do not have to walk to the back of the air conditioner, which can save physical strength and time. At the same time, a ring magnet is installed inside the clamping block, and the attraction between the magnet and the fixed iron plate can increase the stability of the inspection platform when it is stationary.

[0024] In addition, three second support rods are installed in a ring shape at the lower end of the maintenance platform. The second support rods can play an auxiliary supporting role, making the maintenance platform more stable when rotating. At the same time, the one-way elastic teeth at the lower end of the second support rods engage with the fixed teeth inside the groove, so that the worker can only rotate the maintenance platform in one direction. When the worker does not rotate the maintenance platform, the stability of the device can be increased by the setting of the one-way elastic teeth engaging with the fixed teeth.

[0025] In addition, by sliding the fastening block into the first track groove, workers can move the positions of the two fastening blocks left and right, thereby adjusting the distance between the two pressure plates, which is convenient for fixing air conditioners of different sizes.

[0026] In addition, the connecting screws at both ends of the connecting block are slidably mounted in the second track groove, so that workers can move the connecting screws up and down to ensure that the pressure plate is located in the middle of the left and right ends of the air conditioner.

[0027] In addition, the front end of the power screw is threadedly connected to the threaded hole inside the connecting block, so that when the worker turns the power screw, the power screw will drive the block to move forward. It is also fixedly connected to the pressure plate through the inner end of the limit rod, and the outer end of the limit rod is connected to the stop block bolt. When the stop block moves forward, the limit rod will also push the pressure plate forward, thereby fixing the air conditioner.

[0028] In addition, by providing the rubber strip on the inner end surface of the pressing plate, the rubber strip can play a buffering role when the two pressing plates are fixing the air conditioner, thereby protecting the outer shell of the air conditioner.

[0029] In addition, a clamp is installed at the top of the fixed vertical plate, and workers can clamp the most commonly used tools in the clamp. Hooks are also evenly installed on the lower end surface of the connecting horizontal plate, so that workers can hang spare tools on the hooks, which is convenient for workers to take and can improve maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of the fixing seat and the maintenance platform of the present invention;

[0032] Figure 3 It is a schematic diagram of the connection structure between the first support rod and the clamping block of the present invention;

[0033] Figure 4 It is a schematic diagram of the placement plate and the fastening block structure of the present invention;

[0034] Figure 5 This is a schematic diagram of the connection structure between the connection block and the fixed vertical plate of the present invention;

[0035] Figure 6 It is a schematic diagram of the cross-sectional structure of the fixing seat of the present invention;

[0036] Figure 7 This is a schematic diagram of the connection structure between the maintenance platform and the connecting horizontal plate of the present invention;

[0037] Figure 8 This is a schematic diagram of the connection structure between the placement plate and the maintenance platform of the present invention;

[0038] Fig. 9 It is a schematic diagram of the cross-sectional structure of the connection block of the present invention;

[0039] Fig.10 It is a schematic diagram of the connection structure between the connection block and the limiting rod of the present invention.

[0040] In the figure:

[0041] 1. Fixed seat; 101. Groove; 1011. Fixed tooth; 2. First support rod; 201. Fixed iron plate; 3. Inspection table; 301. First track groove; 302. Second support rod; 3021. One-way elastic tooth; 303. Block; 3031. Magnet; 4. Placement plate; 5. Fixed vertical plate; 501. Second track groove; 502. Snap ring; 6. Fastening block; 601. Fastening screw; 7. Connecting block; 701. Connecting screw; 702. Limiting hole; 703. Threaded hole; 8. Limiting rod; 9. Stopper; 901. Through hole; 10. Pressing plate; 1001. Rubber strip; 11. Power screw; 12. Connecting horizontal plate; 1201. Hook. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Embodiment 1

[0044] like Figures 1 to 10 As shown, the present invention provides a fixing fixture for refrigeration equipment maintenance, comprising a fixing seat 1;

[0045] The main body of the fixing seat 1 is a circular plate-shaped structure, and a circular groove 101 is provided on the surface of the fixing seat 1. A first support rod 2 is fixedly installed at the middle position of the upper end surface of the fixing seat 1;

[0046] The inspection platform 3 is a rectangular structure. The upper end surface of the inspection platform 3 is provided with two first track grooves 301. The first track grooves 301 are T-shaped structures. The first track grooves 301 are internally slidably mounted with fastening blocks 6. The lower end surface of the inspection platform 3 is also provided with three second support rods 302. The three second support rods 302 are arranged in a ring structure.

[0047] The placing plate 4 is symmetrically provided with two groups, the upper end surface of the placing plate 4 is provided with two connecting holes, the upper end surface of the placing plate 4 is symmetrically provided with two fixing vertical plates 5, and the surface of the fixing vertical plates 5 is provided with a through-shaped second track groove 501;

[0048] A connecting block 7, a through hole is provided in the middle of the connecting block 7, two through-shaped limiting holes 702 are symmetrically provided inside the connecting block 7, and a threaded hole 703 is also provided inside the connecting block 7, and the threaded hole 703 is communicated with the through hole in the middle of the connecting block 7;

[0049] The limiting rods 8 are symmetrically provided with two groups, and the limiting rods 8 are slidably mounted in the limiting holes 702 inside the connecting block 7, and the outer end surfaces of the two limiting rods 8 are connected to the stopper 9 by bolts;

[0050] The pressing plate 10 is provided with two pressing plates 10 , and the outer end surface of the pressing plate 10 is fixedly connected to the two limiting rods 8 , and the inner end surface of the pressing plate 10 is provided with a rubber strip 1001 , and the rubber strip 1001 is arranged in a cross structure.

[0051] By adopting the above scheme, the technical effect brought about is: when the air conditioner to be repaired is placed on the maintenance platform 3 for maintenance, the two pressure plates 10 can move inward at the same time to fix the air conditioner. When the air conditioner is squeezed by the two pressure plates 10, the protective paint on the surface of the air conditioner is easily knocked off, and marks are easily left, causing damage to the outer surface of the air conditioner. By setting the rubber strip 1001 on the inner end surface of the pressure plate 10, the rubber strip 1001 can play a buffering role when the two pressure plates 10 fix the air conditioner, thereby protecting the outer shell of the air conditioner.

[0052] Among them, a fixed iron plate 201 is fixedly installed on the top of the first support rod 2, and a clamping block 303 is installed in the middle position of the lower end surface of the maintenance platform 3. A clamping groove is opened inside the clamping block 303, and the fixed iron plate 201 is clamped in the clamping groove inside the clamping block 303. A magnet 3031 is also provided inside the clamping block 303, and the inner end surface of the magnet 3031 is in contact with the outer end surface of the fixed iron plate 201.

[0053] By adopting the above scheme, the technical effect brought about is: during the process of comprehensive inspection of the air conditioner on the upper end of the inspection platform 3, the worker needs to keep walking around the air conditioner, which not only brings inconvenience to the worker's maintenance work, but also increases the worker's workload. In the present device, the fixed iron plate 201 at the upper end of the first support rod 2 is rotatably connected to the setting in the block 303 at the lower end of the inspection platform 3, so that the inspection platform 3 can rotate around the first support rod 2, so that when inspecting the back of the air conditioner, the worker does not have to walk to the back of the air conditioner, but only needs to rotate the inspection platform 3 to rotate the back of the air conditioner in front of the worker. At the same time, a ring magnet 3031 is also installed inside the block 303. The attraction between the magnet 3031 and the fixed iron plate 201 can increase the stability of the inspection platform 3 when it is stationary, which is convenient for the worker's inspection work.

[0054] Among them, the inner part of the groove 101 on the surface of the fixing seat 1 is evenly installed with fixing teeth 1011 , and the lower end of the second support rod 302 is installed with a one-way elastic tooth 3021 , and the one-way elastic tooth 3021 is meshed with the fixing tooth 1011 .

[0055] By adopting the above scheme, the technical effect brought about is: when the maintenance platform 3 rotates around the first support rod 2, the maintenance platform 3 is prone to up and down swinging, and three second support rods 302 are installed in a ring shape at the lower end of the maintenance platform 3. The second support rods 302 can play an auxiliary support role, allowing the maintenance platform 3 to be more stable when rotating. At the same time, the one-way elastic teeth 3021 at the lower end of the second support rods 302 are engaged with the fixed teeth 1011 inside the groove 101, so that the worker can only rotate the maintenance platform 3 in one direction. When the worker does not rotate the maintenance platform 3, the stability of the device can be increased by setting the one-way elastic teeth 3021 to engage with the fixed teeth 1011.

[0056] Embodiment 2:

[0057] A fastening screw 601 is installed on the upper end surface of the fastening block 6, and the upper end of the fastening screw 601 passes through the connecting hole on the surface of the placement plate 4 and is fastened by a nut.

[0058] By adopting the above scheme, the technical effect brought about is: air conditioners of different specifications have different sizes. By sliding the fastening block 6 and clamping it inside the first track groove 301, workers can move the positions of the two fastening blocks 6 left and right, thereby adjusting the distance between the two pressure plates 10, which is convenient for fixing air conditioners of different sizes. The fastening screw 601 at the upper end of the fastening block 6 passes through the connecting hole on the surface of the placement plate 4 and is fastened by a nut. When the worker adjusts the distance between the pressure plates 10, the nut on the surface of the fastening screw 601 can be tightened to fix the fastening block 6, and the operation is simple.

[0059] Among them, a connecting screw 701 is installed on each of the two end surfaces of the connecting block 7, and the connecting screw 701 is slidably clamped in the second track groove 501 on the surface of the fixed vertical plate 5. A through hole 901 is opened in the middle position of the stopper 9, and a power screw 11 is installed inside the through hole 901. The front end of the power screw 11 is threadedly connected to the threaded hole 703 inside the connecting block 7.

[0060] By adopting the above scheme, the technical effect brought about is: the connecting screws 701 at both ends of the connecting block 7 are slidably clamped in the second track groove 501, so that the worker can move the upper and lower positions of the connecting screws 701, thereby ensuring that the pressure plate 10 is located in the middle position between the left and right ends of the air conditioner, and at the same time, the front end of the power screw 11 is threadedly connected to the threaded hole 703 inside the connecting block 7, so that when the worker turns the power screw 11, the power screw 11 will drive the stopper 9 to move forward, and it is also fixedly connected to the pressure plate 10 through the inner end of the limit rod 8, and the outer end of the limit rod 8 is bolted to the stopper 9, so that when the stopper 9 moves forward, the limit rod 8 will also push the pressure plate 10 to move forward, thereby fixing the air conditioner.

[0061] Embodiment three:

[0062] Among them, two connecting horizontal plates 12 are symmetrically installed at the left and right positions of the lower end surface of the inspection platform 3, hooks 1201 are evenly installed on the lower end surface of the connecting horizontal plates 12, and a clamping ring 502 is also installed on the top end surface of the fixed vertical plate 5.

[0063] By adopting the above scheme, the technical effect brought about is: workers need to use various tools during maintenance, so when workers are performing maintenance, the tools are scattered on the maintenance table 3, which is inconvenient for workers to take, and there is also great inconvenience in the later sorting. A clamping ring 502 is installed on the top of the fixed vertical plate 5, and workers can clamp the most commonly used tools in the clamping ring 502, and hooks 1201 are evenly installed on the lower end surface of the connecting horizontal plate 12, so that workers can hang spare tools on the hooks 1201, which is convenient for workers to take, and can improve the efficiency of maintenance.

[0064] During use: When workers are conducting a comprehensive inspection of the air conditioner at the upper end of the inspection platform 3, they need to keep walking around the air conditioner, which not only brings inconvenience to the workers' maintenance work, but also increases the workers' workload. In this device, the fixed iron plate 201 at the upper end of the first support rod 2 is rotatably connected to the setting in the block 303 at the lower end of the inspection platform 3, so that the inspection platform 3 can be rotated around the first support rod 2, so that when inspecting the back of the air conditioner, the worker does not have to walk to the back of the air conditioner, but only needs to rotate the inspection platform 3 to rotate the back of the air conditioner in front of the worker. At the same time, a ring magnet 3031 is also installed inside the block 303, and the attraction between the magnet 3031 and the fixed iron plate 201 can increase the inspection platform 3 is stable when stationary, which is convenient for workers to perform maintenance operations. When the maintenance platform 3 rotates around the first support rod 2, the maintenance platform 3 is prone to up and down swinging. Three second support rods 302 are installed in a ring shape at the lower end of the maintenance platform 3. The second support rods 302 can play an auxiliary support role, making the maintenance platform 3 more stable when rotating. At the same time, the one-way elastic teeth 3021 at the lower ends of the second support rods 302 are engaged with the fixed teeth 1011 inside the groove 101, so that the workers can only rotate the maintenance platform 3 in one direction. When the workers do not rotate the maintenance platform 3, the one-way elastic teeth 3021 are engaged with the fixed teeth 1011. The setting can also increase the stability of the device. Air conditioners of different specifications have different sizes and are installed by sliding the fastening block 6 The arrangement inside the first track groove 301 allows workers to move the positions of the two fastening blocks 6 left and right, thereby adjusting the distance between the two pressure plates 10, which is convenient for fixing air conditioners of different sizes. The fastening screw 601 at the upper end of the fastening block 6 passes through the connecting hole on the surface of the placement plate 4 and is fastened by a nut, so that when the worker adjusts the distance between the pressure plates 10, the nut on the surface of the fastening screw 601 can be tightened to fix the fastening block 6. The operation is simple. The connecting screws 701 at both ends of the connecting block 7 are slidably mounted in the second track groove 501, so that the worker can move the connecting screw 701 up and down to ensure that the pressure plate 10 is located in the middle position of the left and right ends of the air conditioner. At the same time, the front end of the power screw 11 is threadedly connected to the inside of the connecting block 7 The threaded hole 703 is arranged in the threaded hole 703, so that when the worker rotates the power screw 11, the power screw 11 will drive the stopper 9 to move forward, and the inner end of the limit rod 8 is fixedly connected to the pressure plate 10, and the outer end of the limit rod 8 is bolted to the stopper 9, so that when the stopper 9 moves forward, the limit rod 8 will also push the pressure plate 10 to move forward, thereby fixing the air conditioner. When the air conditioner is squeezed by the two pressure plates 10, the protective paint on the surface of the air conditioner is easily knocked off, and marks are easily left, causing damage to the outer surface of the air conditioner. By setting the rubber strip 1001 on the inner end surface of the pressure plate 10, when the two pressure plates 10 fix the air conditioner, the rubber strip 1001 can play a buffering role and protect the outer shell of the air conditioner.Workers need to use a variety of tools when performing maintenance. Therefore, when performing maintenance, the tools are scattered on the maintenance table 3, which is inconvenient for the workers to take and also very inconvenient to sort out later. A clamp ring 502 is installed on the top of the fixed vertical plate 5. The workers can clamp the most commonly used tools in the clamp ring 502. In addition, hooks 1201 are evenly installed on the lower end surface of the connecting horizontal plate 12, so that the workers can hang spare tools on the hooks 1201, which is convenient for the workers to take and can improve the efficiency of maintenance.

[0065] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0066] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixing fixture for refrigeration equipment maintenance, characterized in that: The invention comprises a fixing seat (1); the fixing seat (1) has a main body in a circular plate-shaped structure, a circular groove (101) is provided on the surface of the fixing seat (1), and a first support rod (2) is fixedly installed at the middle position of the upper end surface of the fixing seat (1); an inspection platform (3), the inspection platform (3) has a rectangular structure, and two first track grooves (301) are provided on the upper end surface of the inspection platform (3), the first track grooves (301) are in a T-shaped structure, and a fastening block (6) is slidably mounted inside the first track grooves (301), and three second support rods (302) are also installed on the lower end surface of the inspection platform (3), and the three second support rods (302) are arranged in a ring structure; and a placement plate (4), the placement plate (4) is symmetrically provided with two groups, the upper end surface of the placement plate (4) is provided with two connecting holes, and the upper end surface of the placement plate (4) is symmetrical. Two fixed vertical plates (5) are installed, and the surface of the fixed vertical plates (5) is provided with a through-shaped second track groove (501); a connecting block (7), wherein a through hole is provided in the middle position of the connecting block (7), and two through-shaped limiting holes (702) are symmetrically provided inside the connecting block (7), and a threaded hole (703) is also provided inside the connecting block (7), and the threaded hole (703) is communicated with the through hole in the middle of the connecting block (7); limiting rods (8), wherein two groups of limiting rods (8) are symmetrically provided, and the limiting rods (8) are slidably clamped in the limiting holes (702) inside the connecting block (7), and the outer end surfaces of the two limiting rods (8) are connected to the stopper (9) by bolts; and a pressing plate (10), wherein two pressing plates (10) are provided, and the outer end surfaces of the pressing plates (10) are fixedly connected to the two limiting rods (8); A fixed iron plate (201) is fixedly mounted on the top of the first support rod (2); a clamping block (303) is mounted at the middle position of the lower end surface of the inspection platform (3); a clamping slot is provided inside the clamping block (303); the fixed iron plate (201) is clamped in the clamping slot inside the clamping block (303); a magnet (3031) is also provided inside the clamping block (303); the inner end surface of the magnet (3031) is in contact with the outer end surface of the fixed iron plate (201); The grooves (101) on the surface of the fixing seat (1) are evenly installed with fixing teeth (1011), and the lower end of the second support rod (302) is installed with one-way elastic teeth (3021), and the one-way elastic teeth (3021) are meshed with the fixing teeth (1011); A fastening screw (601) is installed on the upper end surface of the fastening block (6), and the upper end of the fastening screw (601) passes through a connection hole on the surface of the placement plate (4) and is fastened by a nut; A connecting screw (701) is respectively installed on both end surfaces of the connecting block (7), and the connecting screw (701) is slidably mounted in a second track groove (501) on the surface of the fixed vertical plate (5); A through hole (901) is provided in the middle of the stopper (9), a power screw (11) is installed inside the through hole (901), and the front end of the power screw (11) is threadedly connected to a threaded hole (703) inside the connecting block (7); The inner end surface of the pressing plate (10) is provided with a rubber strip (1001), the rubber strip (1001) being arranged in a cross structure, and the top end surface of the fixed vertical plate (5) is also provided with a clamping ring (502); Two connecting transverse plates (12) are symmetrically mounted on the left and right sides of the lower end surface of the inspection platform (3), and hooks (1201) are evenly mounted on the lower end surfaces of the connecting transverse plates (12).

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