CN105833527B - Supporting device for small-sized amusement facility - Google Patents

Abstract

A supporting device for a small amusement facility mainly comprises a supporting device, a fixing device and a rotating device, wherein a central through hole which takes the axis of the fixing device as a shaft is arranged on the fixing device; the lower end surface of the rotating device is provided with a positioning sleeve mounting hole which is sunken upwards; the distance of the pressure plate entering the supporting shaft is adjusted by screwing the pressure plate, so that the pressure plate and the supporting shaft can tightly press the fixing device from two directions; the positioning sleeve is embedded in the positioning sleeve mounting hole of the rotating device, the rotating device is mounted on the supporting shaft of the fixing device, the supporting shaft is inserted into the mounting hole in the bottom wall of the positioning sleeve, the positioning sleeve and the rotating device form a male-female fit, the rotating device and the positioning sleeve can rotate by taking the supporting shaft as a shaft under the pushing of external force, and the lock bolt is ejected by the ejector rod and is blocked by the stop flange arranged on the inner wall of the positioning sleeve, so that the rotating device cannot be moved away from the supporting shaft.

Description

A support device for small amusement facilities

technical field

The invention relates to a supporting device of a rotatable small amusement facility, which belongs to the optimization technology of the small amusement facility.

Background technique

There are many kinds and different forms of rotating tourist facilities, which can be divided into large and small in terms of volume.

The rotating small amusement device involved in the present invention is mainly composed of three parts, the fixing device at the bottom, the rotating device at the top, and the support device at the middle connecting the fixing device and the rotating device. Usually, when rotating When a driving force is applied to the device, the rotating device will rotate about the support device as the axis. The advantage of this structure is that the structure is simple and easy to implement. The disadvantage is that the rotating device located above may be lifted up by tourists, causing the rotating device to break away from the supporting device, making the amusement facility unable to use normally, especially when the rotating device is lifted. It may also injure yourself or others, which is dangerous.

In addition, the rotating device is usually provided with a central through hole, and the supporting device passes through the central through hole, and the supporting devices at both ends of the rotating device are provided with fixing devices for limiting and fixing, such as nuts and the like. However, there are two disadvantages in setting up and down the central through hole on the rotating device: one is that some specific designs do not adopt through-type fixing, and the other is that it is greatly affected by the use environment, such as rainwater, dust, etc. The junction with the swivel seeps down the central through hole, corroding the support. Therefore, it is necessary to find a device that has a locking function so that the rotating device cannot be moved away from the supporting device, and the rotating device does not need to be provided with a through hole that penetrates up and down.

Contents of the invention

The purpose of the present invention is to provide a support device for small amusement facilities which has a locking function so that the rotating device cannot be moved away from the supporting device, and the rotating device does not need to be provided with a through hole penetrating up and down.

The technical solution of the present invention is: a support device for small amusement facilities, the small amusement facility is mainly composed of a support device, a fixing device 9 and a rotating device 10, the fixing device 9 is provided with a shaft of the fixing device 9 The center is the central through hole of the shaft; the lower end surface of the rotating device 10 is provided with an upwardly recessed positioning sleeve installation hole; The retaining ring 6, the ejector rod 7 and the bearing 8 are composed; the bottom wall of the positioning sleeve 1 is provided with an upwardly recessed mounting hole, and the positioning sleeve is inserted into the rotating device 10 from the mounting hole of the positioning sleeve, and the two form a tight fit, and then the supporting The upper part of the shaft 2 is inserted into the positioning sleeve 1 from the installation hole on the bottom wall of the positioning sleeve 1, and the two form a male-female fit. The rotating device and the positioning sleeve 1 can rotate around the upper part of the supporting shaft 2; the middle part of the bottom wall of the supporting shaft 2 An upwardly recessed cylindrical positioning hole 24 is provided; the support shaft enters the fixture 9 from the center through hole on the upper end surface of the fixture 9, and the top of the pressure plate 3 enters the fixture from the center through hole on the other end surface of the fixture. The upper part enters the positioning hole 24, and the support shaft 2 and the pressure plate 3 are screwed together through threads, and the two clamp and fix the fixing device from the upper and lower directions; the center of the top wall of the positioning sleeve 1 is provided with a downwardly recessed oil storage tank 11 , used to store lubricating oil; the main body of the support shaft 2 is a cylinder, and the middle part is provided with an outwardly protruding bearing plate 21; the pressure plate 3 includes a pressure plate 31 located at the lower part, and a cylinder that is located on the upper end surface of the pressure plate and protrudes upwards shaped adjustment column, the outer wall of the adjustment column is provided with threads, which are used to connect with the inner wall of the positioning hole of the support shaft through threads, and the center of the pressure plate is provided with a through hole 32 that penetrates up and down; the center through hole near the lower end surface of the fixing device is expanded into a pressure plate Holes, the diameter of the pressure plate hole is the same as the diameter of the pressure plate 31.

A downward oil hole 12 is arranged at the center of the bottom wall of the oil storage tank, so that the lubricating oil in the oil storage tank can penetrate downward through the oil hole; an oil seepage groove is arranged on the oil hole wall.

An upwardly protruding installation hole 13 is provided at the center of the bottom wall of the positioning sleeve for socketing with the support shaft, and an upwardly protruding thimble positioning hole 14 is provided at the center of the top wall of the mounting hole, and the oil hole 12 communicates with the thimble positioning hole 14 , so that lubricating oil can penetrate downward to lubricate the cone top wall surface of the support shaft; the inner wall of the positioning sleeve 1 is provided with an inwardly protruding stop flange 15 .

A bearing stop platform 22 is provided on the cylinder above the bearing plate 21, the diameter of the cylinder above the bearing stop platform is smaller than the diameter of the cylinder below it; an upwardly protruding cylindrical thimble 23 is provided on the top of the support shaft, The top of the thimble 23 is a cone; the inner wall of the positioning hole 24 is provided with a thread matched with the pressure plate 3 for connecting with the pressure plate 3; the center of the top wall of the positioning hole 24 is provided with an upwardly extending ejector hole 25, and the ejector rod The hole 25 and the push rod 7 form a positive and negative fit; the top of the support shaft is provided with two groups of lock bolt holes 26, spring holes 27 and retaining ring holes 28 arranged symmetrically with the central axis of the support shaft; each group of lock bolt holes 26 and spring Hole 27 and retaining ring hole 28 are coaxial and communicate with each other; Lock bolt hole 26 communicates with push rod hole 25, and retaining ring hole 28 communicates with the outer wall of support shaft; The aperture of lock bolt hole 26 is less than the aperture of spring hole 27, and spring hole The aperture of 27 is less than the aperture of retaining ring hole 28; The opening of lock bolt hole 26 in the push rod hole 25 is positioned at the bottom of the cone at the top of the lock rod hole; the outer wall of lock bolt 4 is provided with a circle of outwardly protruding stops Ring 41 , the diameter of the stop ring 41 is larger than the diameter of the locking bolt hole 26 .

When assembling, first press the positioning sleeve 1 into the installation hole of the positioning sleeve from the lower end surface of the rotating device, use the mouth of a grease gun to fill the oil storage tank with lubricating oil until it is full; then assemble the support shaft 2, and put the bearing 8 from the support Press the upper part of the shaft to the bearing stop platform; insert the end of the lock bolt with the stop ring from the hole of the retaining ring into the hole of the lock bolt until the stop ring 41 is against the wall of the spring hole near the end of the ejector hole, and put 5 sets of springs On the lock bolt exposed outside the support shaft, press the spring 5 into the lock bolt hole, put the retaining ring 6 on the lock bolt, press the retaining ring 6 to the retaining ring hole on the surface of the support shaft 2 and fix it, so that the spring is Compressed between the retaining ring and the stop ring on the lock bolt, under the action of external force, the lock bolt can move left and right in the center hole of the spring and the retaining ring, and the support shaft 2 is assembled; the fixing device is erected vertically and fixed, Or put it on the lower hollow workbench, insert the assembled supporting shaft 2 into the center hole from the upper end surface of the fixing device until the bearing plate 21 of the supporting shaft is positioned against the upper end surface of the fixing device; Put a rubber buffer pad on the top wall of the fixing device, then insert the pressure plate 3 into the center hole from the lower end surface of the fixing device, and screw it in the positioning hole of the support shaft 2, so that the lower end surface of the pressure plate is embedded in the pressure plate hole of the fixing device; The installed fixing device is placed on the workbench with the upper end facing up, and then the mounting hole of the positioning sleeve on the bottom wall of the assembled rotating device is aligned with the top of the supporting shaft on the fixing device, and the rotating device is lowered so that the supporting shaft enters Install the hole until the thimble 23 of the support shaft is positioned against the top of the thimble positioning hole 14 of the positioning sleeve 1; screw the ejector rod 7 from the through hole on the lower end surface of the pressure plate 3 to push the locking bolt upwards, and the locking bolt moves to both sides separate, respectively located above the stop flange 15, so that the rotating device cannot be removed from the fixing device; When a driving force is applied to the outer wall of the rotating device, the rotating device will rotate above the fixing device with the support shaft as the axis.

After the assembly is completed, there is a gap between the rotating device 10 and the fixing device 9 .

Beneficial effect

1. Adjust the distance of the pressure plate into the support shaft by screwing the pressure plate, so as to realize the function of the pressure plate and the support shaft to press the fixing device from two directions;

2. By inserting the positioning sleeve into the positioning sleeve installation hole of the rotating device, and then installing the rotating device on the supporting shaft of the fixing device, the supporting shaft is inserted into the mounting hole on the bottom wall of the positioning sleeve, and the two form a yin and yang fit. Under the promotion of external force, the rotating device and the positioning sleeve can rotate around the support shaft, and the locking bolt is pushed away by the ejector rod, and the locking bolt is blocked by the stop flange on the inner wall of the positioning sleeve, so that the rotating device cannot be moved. away from the support axis.

Description of drawings

Fig. 1 is the sectional structure schematic diagram of positioning sleeve of the present invention;

Fig. 2 is a schematic cross-sectional structure diagram of a support shaft of the present invention;

Fig. 3 is the A-A figure of Fig. 2;

Fig. 4 is a partial sectional structural schematic diagram of the pressure plate of the present invention;

Fig. 5 is a front structural schematic view of the lock bolt of the present invention;

Fig. 6 is the schematic diagram of the front view structure of the push rod of the present invention;

Fig. 7 is a front view sectional structural schematic diagram of the present invention;

Figure 8 is an embodiment of the present invention.

detailed description

As shown in Figure 8, a support device for a small amusement facility, the small amusement facility is mainly composed of a support device, a fixing device 9 and a rotating device 10, the fixing device 9 is provided with the axis of the fixing device 9 It is the central through hole of the shaft; the lower end surface of the rotating device 10 is provided with an upwardly recessed positioning sleeve mounting hole; the lower part of the supporting device is placed in the central through hole of the fixing device 9, and the upper part is placed on the bottom wall of the rotating device 10 In the mounting hole of the positioning sleeve; when a driving force is applied to the side wall of the rotating device, the rotating device will rotate with the support device as the axis.

As shown in FIG. 7 , the support device is mainly composed of a positioning sleeve 1 , a support shaft 2 , a pressure plate 3 , a lock bolt 4 , a spring 5 , a retaining ring 6 , a push rod 7 and a bearing 8 . The upper part of the supporting device used for the supporting device of the small amusement facility is used to be connected with the rotating device 10, and the lower part is used to be connected with the fixing device 9, so that the rotating device 10 can rotate around the supporting device.

Rotary devices and fixed devices are usually cylinders.

In practical applications, the fixing device 9 is provided with a central through hole with the axis of the fixing device 9 as the axis; the lower end surface of the rotating device 10 is provided with an upwardly recessed positioning sleeve installation hole, and The top wall is located inside the swivel 10 and is not a through hole. The lower part of the supporting device is placed in the central through hole of the fixing device 9, and the upper part is placed in the positioning sleeve installation hole on the bottom wall of the rotating device 10; when a driving force is applied to the side wall of the rotating device, the rotating device will Rotate around the support device.

The bottom wall of the positioning sleeve 1 is provided with an upwardly recessed installation hole, and the positioning sleeve is inserted into the rotating device 10 through the installation hole of the positioning sleeve, and the two form a tight fit, and then the upper part of the support shaft 2 is inserted from the bottom wall of the positioning sleeve 1. The mounting hole is inserted into the positioning sleeve 1, and the two form a male and female fit, and the rotating device and the positioning sleeve 1 can rotate around the upper part of the support shaft 2; the middle part of the bottom wall of the support shaft 2 is provided with an upwardly recessed cylindrical positioning hole 24; The shaft enters the fixing device 9 from the center through hole on the upper end surface of the fixing device 9, the upper part of the pressure plate 3 enters the fixing device through the center through hole on the other end surface of the fixing device, and the upper part of the pressure plate enters the positioning hole 24, and supports the shaft 2 and the pressure plate 3 are screwed together by threads, and the two clamp and fix the fixing device from the upper and lower directions.

As shown in Figure 1, a downwardly recessed oil storage tank 11 is provided at the center of the top wall of the positioning sleeve 1 for storing lubricating oil; a downward oil hole 12 is provided at the center of the bottom wall of the oil storage tank to make the lubricating oil in the oil storage tank Oil can penetrate downward through the oil hole; an upwardly recessed installation hole 13 is provided at the center of the bottom wall of the positioning sleeve for socketing with the support shaft, and an upwardly protruding thimble positioning hole 14 is provided at the center of the top wall of the installation hole. When the positioning sleeve is placed on the support shaft, the thimble of the support shaft is just located in the positioning hole 14 of the thimble. . An inwardly protruding stop flange 15 is provided on the inner wall of the positioning sleeve 1 for blocking the locking bolt 4 and preventing the rotating device 10 from being lifted from the supporting shaft 2 .

As shown in Figures 2 and 3, the main body of the support shaft 2 is a cylinder, and the middle part is provided with an outwardly protruding force bearing plate 21; a bearing stop platform 22 is provided on the cylinder above the force bearing plate 21, and the bearing stop The diameter of the cylinder above the platform is smaller than the diameter of the cylinder below it; an upwardly protruding cylindrical thimble 23 is provided on the top of the support shaft, and the top of the thimble 23 is a cone; the middle part of the bottom wall of the support shaft 2 is provided with an upwardly recessed cylindrical Positioning hole 24, the inner wall of positioning hole 24 is provided with the screw thread that matches with pressure plate 3, is used for being connected with pressure plate 3; In the center of the top wall of positioning hole 24, be provided with upwardly extending ejector hole 25, ejector hole 25 is connected with the ejector pin. Rod 7 forms male-female fit; The top of support shaft is provided with two groups of lock bolt holes 26, spring holes 27 and retaining ring holes 28 arranged symmetrically with the central axis of support shaft; each group of lock bolt holes 26 and spring holes 27 and stop The ring hole 28 is coaxial and communicates with each other; the lock bolt hole 26 communicates with the push rod hole 25, and the retaining ring hole 28 communicates with the outer wall of the support shaft; the aperture of the lock bolt hole 26 is smaller than the aperture of the spring hole 27, and the aperture of the spring hole 27 is smaller than The diameter of the retaining ring hole 28; and, the opening of the locking bolt hole 26 in the push rod hole 25 is just below the bottom of the cone at the top of the locking rod hole.

As shown in Fig. 4, the pressure plate 3 includes a pressure plate 31 located at the lower part, and a cylindrical adjustment column that is located on the upper end surface of the pressure plate and protrudes upwards. The outer wall of the adjustment column is provided with threads for matching with the inner wall of the positioning hole of the support shaft Through screw connection, the position of the pressure plate in the positioning hole of the support shaft can be adjusted; the center of the pressure plate is provided with a through hole 32 that penetrates up and down.

As shown in Figure 5, a circle of outwardly protruding stop ring 41 is provided on the outer wall of the lock bolt 4. The diameter of the stop ring 41 is larger than the aperture of the lock bolt hole 26, and the stop ring is used to fix the spring 5 on the stop ring. and retaining ring 6.

When one end of the lock bolt 4 is inserted from the retaining ring hole 28, it enters the lock bolt hole 26 after passing through the spring hole 27, then the spring 5 is placed on the lock bolt, the spring 5 is pressed into the spring hole 27, and then the retaining ring 6 sets On the lock bolt, press the retaining ring 6 to the retaining ring hole on the surface of the support shaft 2 and fix it so that the spring is compressed in the spring hole between the retaining ring and the stop ring on the lock bolt. Under the action of external force, The locking bolt can move left and right in the center hole of the spring and retaining ring.

The retaining ring 6 is usually fixed by means of spot welding or the like.

When the push rod 7 has not pushed back the lock bolt 4, due to the elastic force of the spring, the spring presses the stop ring 41 on the wall surface of the spring hole near the end of the push rod hole 25. At this time, the lock bolt is completely submerged in the support shaft 2 .

As shown in Figure 6, the main body of the ejector rod 7 is a cylinder, and the top is a cone. An outwardly protruding stop block is provided at the root of the ejector rod. The thread that matches the hole; the bottom wall of the stop block is provided with an upwardly recessed adjustment hole, and the adjustment hole takes the axis of the ejector rod as the axis; the adjustment hole is used to adjust the position of the ejector rod on the support shaft 2 ; The adjustment hole is an inner hexagonal hole, which is adjusted with an inner hexagonal tool.

There is an oil seepage groove on the wall of the oil hole, so that the lubricating oil can seep downward smoothly. Since there are small gaps between the positioning sleeve and the support shaft, air can enter through these gaps, so that the lubricating oil can smoothly seep downwards to lubricate the outer wall of the upper part of the support shaft.

As shown in Figure 7, when assembling the support device, first assemble the support shaft 2, press the bearing 8 from the upper part of the support shaft to the bearing stop platform; insert the end of the lock bolt with the stop ring from the retaining ring hole into the lock bolt hole , until the stop ring 41 is against the spring hole wall near the end of the ejector rod hole, put the spring 5 on the lock bolt exposed outside the support shaft, press the spring 5 into the lock bolt hole, and put the retaining ring 6 on the lock bolt Press the retaining ring 6 into the retaining ring hole on the surface of the support shaft 2 and fix it so that the spring is compressed between the retaining ring and the stop ring on the lock bolt. Under the action of external force, the lock bolt can Move left and right in the central hole of the ring, and the support shaft 2 is assembled. At this moment, the lock bolt is completely submerged in the support shaft 2, and the bearing can be taken off from the support shaft top or the bearing can be pressed onto the bearing stop platform. Then the positioning sleeve and the pressure plate are respectively connected to the support shaft 2 from both ends of the support shaft, and then the ejector rod 7 is fixed upwardly on the support shaft 2 from the bottom of the pressure plate to form a support device.

As shown in FIG. 8 , in practical applications, when the present invention is used for a support device of a small amusement facility, the fixing device is a chassis 9 , and the rotating device is a rotating disk 10 . When assembling, first press the positioning sleeve 1 from the lower end surface of the rotating disc 10 into the mounting hole of the positioning sleeve, use the nozzle of a grease gun to fill the oil storage tank with lubricating oil until it is full; then vertically fix the chassis 9, or Put it on the lower hollow workbench, insert the assembled support shaft 2 into the center hole from the upper end surface of the chassis until the bearing plate 21 of the support shaft is positioned against the upper end surface of the chassis 9; Place the rubber cushion on the wall, then insert the pressure plate 3 into the center hole from the lower end surface of the chassis, and screw it into the positioning hole of the support shaft 2, so that the lower end surface of the pressure plate is embedded in the pressure plate hole of the chassis; put the installed chassis Put the upper end up on the workbench, align the mounting hole of the positioning sleeve on the bottom wall of the assembled rotating disk with the top of the supporting shaft on the chassis, put down the rotating disk, and let the supporting shaft enter the mounting hole until the supporting shaft The ejector pin 23 of the positioning sleeve 1 is positioned against the top of the ejector pin positioning hole 14; the ejector rod 7 is screwed from the through hole of the lower end surface of the pressure plate 3, so that the ejector rod moves upward into the ejector rod hole 25, and overcomes the elastic force of the spring, and the ejector rod Unlock the lock bolt to make the lock bolt move outwards along the lock bolt hole. After the push rod reaches the uppermost end of the push rod hole, the lock bolt will no longer move. The outward ends of the two lock bolts are respectively located above the stop flange 15. The rotating disk cannot be removed from the chassis; after the assembly is completed, there is a gap between the rotating disk 10 and the chassis 9 to reduce the friction between the two end faces, and the chassis 9 is placed on the bottom and the rotating disk 10 is on the top. The chassis is fixed on the ground or other planes. As long as a driving force is applied to the outer wall of the rotating disk 10, the rotating disk 10 will rotate above the chassis with the support shaft as the axis.

The above-mentioned embodiments are only used to illustrate and explain the purpose of the present invention, rather than to limit the present invention. Those of ordinary skill in the art may make various changes or substitutions within the essential scope of the present invention, which shall also belong to the present invention. scope of protection for inventions.

Claims (6)

1. A supporting device for a small amusement facility, the small amusement facility mainly consists of a supporting device, a fixing device (9) and a rotating device (10), and the fixing device (9) is provided with a fixing device (9) ) is the central through hole of the shaft; the lower end surface of the rotating device (10) is provided with an upwardly recessed positioning sleeve mounting hole; it is characterized in that: the supporting device is mainly composed of a positioning sleeve (1), a supporting shaft (2 ), pressure plate (3), lock bolt (4), spring (5), retaining ring (6), ejector rod (7) and bearing (8); the bottom wall of the positioning sleeve (1) is provided with an upward depression Insert the positioning sleeve into the rotating device (10) from the mounting hole of the positioning sleeve, the two form a tight fit, and then insert the upper part of the support shaft (2) into the positioning sleeve from the mounting hole on the bottom wall of the positioning sleeve (1) Inside (1), the two form a yin and yang cooperation, and the rotating device and the positioning sleeve (1) can rotate around the upper part of the support shaft (2); the middle part of the bottom wall of the support shaft (2) is provided with an upwardly recessed cylindrical positioning hole (24); the support shaft enters the fixture (9) from the center through hole on the upper end surface of the fixture (9), and the top of the pressure plate (3) enters the fixture from the center through hole on the other end surface of the fixture, and the top of the pressure plate Enter the positioning hole (24), the support shaft (2) and the pressure plate (3) are screwed together through threads, and the two clamp and fix the fixing device from the upper and lower directions; the center of the top wall of the positioning sleeve (1) is provided with The downwardly recessed oil storage tank (11) is used to store lubricating oil; the main body of the support shaft (2) is a cylinder, and the middle part is provided with an outwardly protruding bearing plate (21); the pressure plate (3) includes a pressure plate located at the lower part plate (31), and a cylindrical adjustment column that is located on the upper surface of the pressure plate and protrudes upwards. The outer wall of the adjustment column is provided with threads, which are used to connect with the inner wall of the positioning hole of the support shaft through threads. Through hole (32); the central through hole near the lower end surface of the fixing device expands into a pressure plate hole, and the diameter of the pressure plate hole is the same as that of the pressure plate (31). 2. The supporting device for small amusement facilities according to claim 1, characterized in that: a downward oil hole (12) is provided in the center of the bottom wall of the oil storage tank, so that the lubricating oil in the oil storage tank can pass through the oil hole Penetrating downward; there is an oil seepage groove on the wall of the oil hole. 3. The supporting device for small amusement facilities according to claim 1, characterized in that: an upwardly protruding mounting hole (13) is provided at the center of the bottom wall of the positioning sleeve for socketing with the supporting shaft. The center of the top wall of the hole is provided with an upwardly protruding thimble positioning hole (14), and the oil hole (12) communicates with the thimble positioning hole (14), so that the lubricating oil can penetrate downward to lubricate the cone top wall of the support shaft; 1) The inner wall is provided with an inwardly protruding stop flange (15). 4. The supporting device for small amusement facilities according to claim 1, characterized in that: a bearing stop platform (22) is provided on the cylinder above the bearing plate (21), and the bearing stop platform above The diameter of the cylinder is smaller than the diameter of the cylinder below it; an upwardly protruding cylindrical thimble (23) is provided on the support shaft top, and the top of the thimble (23) is a cone; the positioning hole (24) inwall is provided with a pressure plate ( 3) Matching threads for connecting with the pressure plate (3); an upwardly extending ejector hole 25 is provided at the center of the top wall of the positioning hole 24, and the ejector hole 25 and the ejector 7 form a male-female fit; The upper part is provided with two groups of lock bolt holes (26), spring holes (27) and retaining ring holes (28) arranged symmetrically with the central axis of the support shaft; each group of lock bolt holes (26), spring holes (27) and retaining ring holes The ring holes (28) are coaxial and communicate with each other; the lock bolt hole (26) communicates with the ejector rod hole (25), and the retaining ring hole (28) communicates with the outer wall of the support shaft; the aperture of the lock bolt hole (26) is smaller than the spring hole The aperture of (27), the aperture of spring hole (27) is less than the aperture of back-up ring hole (28); square; the outer wall of the lock bolt (4) is provided with a ring of outwardly protruding stop rings (41), and the diameter of the stop ring (41) is greater than the aperture of the lock bolt hole (26). 5. The supporting device for small amusement facilities according to any one of claims 1 to 4, characterized in that: when assembling, first press the positioning sleeve (1) into the mounting hole of the positioning sleeve from the lower end surface of the rotating device , use the grease gun nozzle to face the oil hole and fill the oil storage tank with lubricating oil until it is full; then assemble the support shaft (2), press the bearing (8) from the upper part of the support shaft to the bearing stop platform; set the lock bolt to the stop position One end of the ring is inserted into the lock bolt hole from the retaining ring hole until the stop ring (41) is against the spring hole wall near the end of the ejector rod hole, and the spring (5) is placed on the lock bolt exposed outside the support shaft, and the spring (5) Press into the lock bolt hole, put the retaining ring (6) on the lock bolt, press the retaining ring (6) to the retaining ring hole on the surface of the support shaft (2) and fix it, so that the spring is compressed between the retaining ring and the Between the stop rings on the lock bolt, under the action of external force, the lock bolt can move left and right in the center hole of the spring and the retaining ring, and the support shaft (2) is assembled; the fixing device is erected vertically and fixed, or placed Insert the assembled support shaft 2 into the central hole from the upper end surface of the fixing device on the lower hollow workbench until the bearing plate 21 of the supporting shaft is positioned against the upper end surface of the fixing device; on the top wall of the positioning hole of the supporting shaft Place the rubber cushion, insert the pressure plate (3) into the center hole from the lower end surface of the fixing device, and screw it into the positioning hole of the support shaft (2), so that the lower end surface of the pressure plate is embedded in the pressure plate hole of the fixing device; Put the installed fixing device on the workbench with the upper end facing up, then align the mounting hole of the positioning sleeve on the bottom wall of the assembled rotating device with the top of the supporting shaft on the fixing device, and put down the rotating device so that the supporting shaft Enter the installation hole until the thimble (23) of the support shaft is positioned against the top of the thimble positioning hole (14) of the positioning sleeve (1); screw the ejector rod (7) from the through hole on the lower end of the pressure plate (3), so that It pushes the lock bolt upwards, and the lock bolts are separated to both sides, and are respectively located above the stop flange (15), so that the rotating device cannot be removed from the fixing device; after the assembly is completed, press the fixing device on the bottom and the rotating device on the top The fixing device is fixed on the ground or other planes by means of the method, as long as a driving force is applied to the outer wall of the rotating device, the rotating device will rotate above the fixing device with the support shaft as the axis. 6. The supporting device for small amusement facilities according to claim 1, characterized in that, after the assembly is completed, there is a gap between the rotating device (10) and the fixing device (9).