Riding trolley frame with automatic gradient adjusting mechanism

Abstract

The utility model discloses a riding bogie frame with an automatic gradient adjusting mechanism, which combines a gradient lifting and adjusting simulation device with a main frame for training, does not need to install another independent climbing training device, and the main frame combined with the gradient lifting and adjusting device is convenient to use. The device can be combined with all intelligent riding tables with the sizes matched according to standards to form a complete training device for a rider to use. In addition, the training frame special for the intelligent riding platform can respond to gradient instructions of virtual riding software and can automatically adjust the included angle between the training frame and the ground plane according to the instructions. In addition, the gradient lifting adjusting device and the front end of the main frame are arranged on the same axis, so that the gradient lifting adjusting device is different from the feeling of displacement on two axes in the prior art, and the gradient lifting adjusting device has the real situation feeling close to the feeling of actual riding of the bicycle when the bicycle goes uphill and downhill.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of riding trolley frame, especially involve a slope instruction that responds to virtual riding software, and the riding table special training frame that can be automatically adjusted with ground angle according to instruction. BACKGROUND

[0002] As Figure 1 As shown, it discloses an existing direct-drive type intelligent bicycle training riding table 50b, which can be simply as intelligent riding table 50 with another friction type riding table (as shown in Figure 5 As shown), is a kind of indoor cycling training fitness equipment for bicycle, can simulate real riding feeling, provide riding resistance for user, and measure the output power of user. In recent years, due to the maturation of technology and the reduction of price, intelligent riding table 50 gradually popularizes in market. At present, the intelligent riding table 50 is usually required to be removed after the rear wheel of the bicycle 10, and then the rear wheel shaft frame 16 of the bicycle is installed on the intelligent riding table 50, as shown in Figure 2 In addition to some matching requirements on the installation size of bicycle and riding table, it will cause certain inconvenience in use and installation, so there are special frames for riding table in the market, and they are accepted by the market.

[0003] The currently marketed intelligent riding table special frame has relatively simple function, and some conventional intelligent riding table allows user to modify the resistance provided by the intelligent riding table. Although resistance change can be used to roughly estimate the effort required to overcome certain terrain, many conventional intelligent riding tables do not change the orientation of the bicycle to simulate the gradient corresponding to the terrain. Therefore, the rider is generally not placed in the same position as when actually riding on the terrain. Therefore, it will hinder the rider to accurately simulate road or path riding, or other height changes that the rider may encounter during actual riding, so there is still room for improvement.

[0004] As Figures 3~5 As shown, it is US patent No. US11,395,948B2, which discloses a climbing training device 100 used with bicycle 10, including housing 102, base 104, shuttle 106 and its guide member, the member includes lower end and upper end defining an axis therebetween, shuttle 106 is operably connected to the front fork 17 of the bicycle and can be translated along the axis axis (X-X) 200 by the driver connected to the shuttle 106.

[0005] The climbing training device 100 is as Figure 4As shown, it is an independent device, and combined with the front frame 17 of the bicycle 10, in addition to the large volume and space, the axis of the bicycle frame 17 (Y-Y) is moved along the axis of the climbing training device 100 (X-X) 200, rather than along the axis of the front frame 17 (Y-Y), so that the actual cycling experience when climbing uphill is slightly different, and the real situation is lacking.

[0006] Furthermore, as Figure 5 As shown, the transmission mode of the climbing training device 100 is that a motor 222 drives the shuttle 106 up and down through a gear assembly 224, a belt 226 and a tensioner pulley 228. The shuttle 106 must bear the weight of the bicycle 10 and the rider, and the belt 226 is used to pull the shuttle 106 up and down, which is easy to slip and make the lifting position unable to quickly and accurately reach the position.

[0007] Therefore, it is necessary to design a riding trolley frame with a slope automatic adjustment mechanism to solve the above problems. Invention content

[0008] The purpose of the present application is to provide a riding trolley frame with a slope automatic adjustment mechanism, which combines the simulated slope lifting adjustment device with the training frame together, without the need to install another independent lifting platform, and the combined lifting device frame can be combined with various riding platforms according to the standard size to form a complete training device for riders to use.

[0009] To achieve the above purpose, the technical scheme of the present application is as follows:

[0010] A main frame has a seat and a handle; a rear wheel group is arranged at the rear of the main frame, and the rear wheel group can be detached from the main frame; a driving system is arranged on the main frame to drive the rear wheel group to rotate;

[0011] The front end of the main frame extends downwardly and is provided with a hollow sleeve, and two symmetrical lock holes are arranged on the two sides of the bottom end of the hollow sleeve. A slope lifting adjustment device is sleeved on the axis of the hollow sleeve, and comprises a shell base located at the bottom end of the slope lifting adjustment device, the bottom surface of which is in contact with the ground, and an opening is arranged on the upper end surface. A telescopic sliding pipe is fixed at the bottom end of the opening of the shell base, and two symmetrical axial sliding grooves are arranged on the two side surfaces, and the upper end part extends into the hollow sleeve and can slide in the hollow sleeve. An adjusting screw is arranged in the telescopic sliding pipe, and the bottom end is positioned in the shell base. A nut is sleeved on the adjusting screw, and a screw hole is arranged on the two sides relative to the position of the lock hole of the hollow sleeve. Two fixing screws are arranged through the lock hole and the screw hole to fix the nut inside the hollow sleeve. A drive motor is arranged in the shell base to drive the adjusting screw to rotate forward or reverse. An encoder is arranged around the rotating shaft of the drive motor to sense the rotating state of the drive motor. A control unit (MCU) is arranged in the shell base and is electrically connected with the drive motor and the encoder to control the drive motor to rotate forward or reverse, so that the adjusting screw rotates forward or reverse, and the nut moves upward or downward relative to the adjusting screw, and the telescopic sliding pipe moves relative to the hollow sleeve to present the telescopic state. The slope lifting adjustment device can be telescopic in the axis of the hollow sleeve, so that the main frame is lifted or lowered to simulate the situation of the bicycle climbing or descending.

[0012] Further, the bottom edge of the shell base can form a circular arc surface forwardly.

[0013] Further, the drive motor can be arranged on the front side of the shell base, and a speed reduction gear set is arranged between the bottom of the adjusting screw and the drive motor. The drive motor drives the adjusting screw to rotate through the speed reduction gear set.

[0014] Further, a control instrument is arranged on the main frame, and the control instrument is electrically connected with the control unit.

[0015] Further, the slope lifting adjustment device can further comprise a transmission unit and a storage unit electrically connected with the control unit, and a power supply circuit for providing power required by the slope lifting adjustment device.

[0016] Further, the nut can be provided with two symmetrical flanges on the two sides of the screw hole, and the two flanges can slide up and down in the two axial sliding grooves.

[0017] Further, the main frame further comprises a friction type riding platform which can be used in combination.

[0018] Further, the main frame can detach the rear wheel group, and can be used in combination with a direct drive riding platform.

[0019] The utility model has the following advantages:

[0020] The utility model combines the slope lifting adjusting device with the main frame for training together, without another independent climbing training device as in the prior art.

[0021] More importantly, the slope lifting adjusting device of the utility model is arranged on the same axis as the hollow sleeve, so that the feeling of displacement on two axes is different from that of the prior art, and the utility model has a real situation feeling close to the actual riding of a bicycle on an uphill or downhill slope.

[0022] Thirdly, the slope lifting adjusting device of the utility model is not driven by a belt, but is adjusted by an adjusting screw, a nut and an encoder, so that the belt driving is not easy to slip, and the utility model has the functions of quick adjustment and accurate lifting position. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is an appearance perspective view of a riding platform;

[0024] Figure 2 It is a use schematic view of a riding platform combined with a bicycle;

[0025] Figure 3 It is a use schematic view of US Patent No. US11,395,948B2;

[0026] Figure 4 It is a schematic view of the climbing training device of US Patent No. US11,395,948B2;

[0027] Figure 5 It is a schematic view of the driving structure of US Patent No. US11,395,948B2;

[0028] Figure 6 It is an appearance perspective view of the utility model; Figure 1 ;

[0029] Figure 7 It is an appearance perspective view of the utility model; Figure 2 ;

[0030] Figure 8 It is a side view of the utility model;

[0031] Figure 9 It is a side view of the utility model combined with a friction type riding platform;

[0032] Figure 10The side view of the rear wheel group disassembled;

[0033] Figure 11 The side view of the rear wheel group disassembled and combined with the straight-drive type riding platform;

[0034] Figure 12 The exploded perspective view of the slope lifting adjusting device and the hollow sleeve tube;

[0035] Figure 13 The combined perspective view of the slope lifting adjusting device and the hollow sleeve tube;

[0036] Figure 14 The perspective sectional view of the slope lifting adjusting device and the hollow sleeve tube;

[0037] Figure 15 The schematic view of the slope lifting adjusting device lifting;

[0038] Figure 16 The schematic view of the slope lifting adjusting device descending;

[0039] Figure 17 The use state schematic view of the slope lifting adjusting device, which shows lifting;

[0040] Figure 18 The use state schematic view of the slope lifting adjusting device, which shows descending;

[0041] Figure 19 The appearance perspective view of another feasible embodiment of the utility model;

[0042] Figure 20 The slope lifting adjusting device sectional view of another feasible embodiment of the utility model;

[0043] Figure 21 The main framework view of the slope lifting adjusting device;

[0044] Figure 22 A use state reference view of the utility model.

[0045] Marking explanation in the drawing:

[0046] 10 main frame;

[0047] 11 seat;

[0048] 12 handle;

[0049] 13 rear wheel group;

[0050] 14 driving system;

[0051] 15 control instrument;

[0052] 16 rear wheel axle;

[0053] 20 hollow sleeve;

[0054] 21 lock hole;

[0055] 22 fixing screw;

[0056] 30 slope lifting adjusting device;

[0057] 31, 31a housing base;

[0058] 311 opening;

[0059] 312 arc surface;

[0060] 313 shaft seat;

[0061] 32 telescopic slide pipe;

[0062] 321 axial sliding groove;

[0063] 33 adjusting screw;

[0064] 34 nut;

[0065] 341 screw hole;

[0066] 342 flange body;

[0067] 35 driving motor;

[0068] 351 rotating shaft;

[0069] 352 encoder;

[0070] 353 speed reduction gear set;

[0071] 36 control unit;

[0072] 37 transmission unit;

[0073] 38 storage unit;

[0074] 39 power supply circuit;

[0075] 50 smart riding platform;

[0076] 50a friction type riding platform;

[0077] 50b direct drive type riding platform;

[0078] 60 virtual riding software;

[0079] 61 mobile device;

[0080] 70 display screen DETAILED DESCRIPTION

[0081] In order to make the purpose, technical scheme and advantages of the utility model embodiments clearer, the technical scheme in the utility model embodiments will be described clearly and completely below in combination with the drawings in the utility model embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0082] Those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means to be within the scope of the utility model and form different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0083] Referring to the drawings Figure 6 to the drawings Figure 22 As shown in the drawings, the utility model is a riding trolley frame 80 with a slope automatic adjusting mechanism, comprising: a main frame 10 with a seat 11 and a handle 12; a rear wheel set 13 arranged at the rear of the main frame 10, and the rear wheel set 13 can be detached from the main frame 10; a driving system 14 arranged on the main frame 10 to drive the rear wheel set 13 to rotate; the above-mentioned structure belongs to prior art (Prior Art) and is not the patent subject of the case, and details are omitted.

[0084] The utility model mainly replaces the bicycle frame in the room to be installed above an intelligent riding platform 50, and provides a frame device for the rider to ride. The basic structure is similar to a bicycle, but a set of height adjusting mechanism that can automatically respond to instructions is replaced in the part of the original front wheel of the bicycle.

[0085] The main feature of the utility model is that the front end of the main frame 10 extends downward to be provided with a hollow sleeve 20, and the hollow sleeve 20 is provided with a symmetrical lock hole 21 on both sides close to the bottom end; a slope lifting adjusting device 30 is sleeved on the axis (Y-Y) of the hollow sleeve 20, which comprises:

[0086] As shown in the drawings Figure 14 , Figure 15 , Figure 16 As shown in the drawings, a shell base 31 is at the bottom end of the slope lifting adjusting device 30, the bottom surface of which contacts the ground, and the upper end surface is provided with an opening 311; in the embodiment, the bottom edge of the shell base 31 forms a circular arc surface 312 forward.

[0087] a telescopic slide pipe 32, whose bottom end is fixed on the opening 311 of the housing base 31, and whose both sides are provided with two symmetrical axial slide grooves 321, and whose upper end 322 extends into the hollow sleeve 20 and can slide in the hollow sleeve 20.

[0088] an adjusting screw 33, which is arranged in the telescopic slide pipe 20, and whose bottom end is positioned in the housing base 31; in this embodiment, the bottom end of the adjusting screw 33 is sleeved on a shaft seat 313. A screw cap 34 is sleeved on the adjusting screw 33, and two screw holes 341 are arranged on both sides of the screw cap 34 relative to the position of the lock hole 21 of the hollow sleeve 20.

[0089] two fixing screws 22, which fix the screw cap 34 inside the hollow sleeve 20 through the lock hole 21 and the screw holes 341. In this embodiment, the screw cap 34 is provided with two symmetrical flange bodies 342 on both sides of the screw holes 341, and the two flange bodies 342 can slide up and down in the two axial slide grooves 321. In this way, when the adjusting screw 33 rotates, the two flange bodies 342 of the screw cap 34 are restricted in the two axial slide grooves 321 and cannot rotate with the adjusting screw 33, so they can only slide up and down in the two axial slide grooves 321, thereby driving the hollow sleeve 20 to rise or fall.

[0090] a drive motor 35, which is arranged in the housing base 31 to drive the adjusting screw 33 to rotate in the forward direction or in the reverse direction; in this embodiment, as shown in the figure, the drive motor 35 is arranged on the front side of the housing base 31; a speed reduction gear set 353 is arranged between the bottom of the adjusting screw 33 and the drive motor 35, and the drive motor 35 drives the adjusting screw 33 to rotate through the speed reduction gear set 353. However, the drive motor 35 can also directly drive the adjusting screw 33, which will be described later. Figure 14 、 Figure 15 、 Figure 16

[0091] an encoder 352, which is arranged around the rotating shaft 351 of the drive motor 35 to sense the rotating state of the drive motor 35; in this embodiment, the encoder 352 is arranged on the speed reduction gear set 353. The encoder 352 is a sensor that measures speed, position, or angle, etc., and converts mechanical displacement into electrical signals, which is a prior art and will not be described in detail.

[0092] ​A control unit (MCU) 36 is disposed within the housing base 31 and is electrically connected to the drive motor 35 and the encoder 352 to control the forward or reverse rotation of the drive motor 35, thereby causing the adjustment screw 33 to rotate forward or reverse. This in turn causes the nut 34 to rise or fall relative to the adjustment screw 33, thereby causing the telescopic slide 32 to extend or retract relative to the hollow sleeve 20. As a result, the grade adjustment device 30 can extend and retract along the axis (YY) within the hollow sleeve 20, causing the main frame 10 to rise or fall, simulating an uphill or downhill bicycle ride.

[0093] Based on the above structure, the grade adjustment device 30 is electrically driven. When the power is turned on, the drive motor 35 rotates, causing the reduction gear set 353 to rotate, and in turn, the adjustment screw 33 to rotate. At this time, the encoder 352 also rotates with the reduction gear set 353, detecting the position of the origin and causing the grade adjustment device 30 to remain at the origin. This is the position where the angle between the bicycle and the ground plane is zero degrees in the virtual riding software. This action is called origin return. After the origin return is completed, the drive motor 35 stops rotating and enters a standby state.

[0094] like Figure 15 As shown in FIG, it shows a schematic diagram of the slope adjustment device 30 being lifted, that is, when the drive motor 35 rotates forward, it drives the adjustment screw 33 to rotate, thereby driving the nut 34 to move upward, and the nut 34 is linked to the hollow sleeve 20, so that the hollow sleeve 20 is also lifted upward. Figure 16 As shown, when the driving motor 35 rotates in reverse, the adjusting screw 33 drives the nut 34 to descend, and the hollow sleeve 20 also descends.

[0095] As above, Figure 17 This is a schematic diagram of the use state of the slope adjustment device 30 of the utility model, as shown in FIG. Figure 15 The action shown can elevate the front end of the main frame 10 by an angle of (+θ). In other words, with the rear wheel axle seat 16 as the center, the distance from the rear wheel axle seat 16 to the fixing screw 22 of the nut 34 is the radius (R), which can extend the main frame 10 along the axis (YY) of the hollow sleeve 20 and elevate it by an angle of (+θ). Similarly, if Figure 16 The action shown, Figure 18 It is shown that the slope adjustment device 30 can cause the main frame 10 to contract along the axis (YY) of the hollow sleeve 20 and descend by an angle (-θ).

[0096] Please continue reading Figure 9 As shown, it discloses the use of the first embodiment of the present invention in combination with a friction type riding platform 50a, but is not limited thereto. Figure 10As shown, the rear wheel set 13 is disassembled and combined with other intelligent riding platform 50. As shown Figure 11 As shown, it shows the use state of the rear wheel set 13 after disassembly, combined with the rear wheel shaft seat 16, and the straight drive riding platform 50b.

[0097] Therefore, the slope lifting adjusting device 30 of the utility model is combined with the main frame 10 for training, without the need to install another independent climbing training device 100 Figure 2 As shown, and the main frame combined with the slope lifting adjusting device 30 can be combined with each intelligent riding platform 50 (50a, 50b) according to the standard matching size to form a complete training device for the rider to use.

[0098] Please continue to refer to Figure 19 and Figure 20 As shown, the second embodiment of the utility model is disclosed, the same structure as the first embodiment is represented by the same figure number, and the difference is only that the shell base 30a in the embodiment is smaller in size, and the rotating shaft 351 of the driving motor 35 is extended upward and downward, the upper rotating shaft 351 directly drives the adjusting screw 33, and the lower rotating shaft 351 is provided with an encoder 352 around, and the control unit 36 is arranged on the rear side of the shell base 30a. Accordingly, the second embodiment has the same features and effects as the first embodiment, and details are not repeated. The following operation is described by the first embodiment.

[0099] As shown Figure 21 In the utility model, the slope lifting adjusting device 30 further includes a transmission unit 37 and a storage unit 38 electrically connected to the control unit 36, and a power supply circuit 39 for providing the power required by the slope adjusting structure 30. As shown Figure 14 As shown, the control unit 36 can be a control circuit board type. In the embodiment, a control instrument 15 is arranged on the main frame 10, and the control instrument 15 is electrically connected to the control unit 36. And the intelligent riding platform 50 can be connected with the control instrument 15 and the control unit 36.

[0100] A virtual cycling software 60 can be presented on a display screen 70 through the control instrument 15 or a mobile device 61, and the smart cycling platform 50 can also be connected with the virtual cycling software 60, receive the instructions issued by the software, and control the smart cycling platform 50 according to the instructions, so that the smart cycling platform 50 makes actions (resistance) meeting the requirements of the virtual cycling software 60. Among the instructions issued by the virtual cycling software 60, there is a real-time virtual slope instruction. Because the resistance to be borne is different at different slopes even if the cycling speed is the same, when the smart cycling platform 50 receives the instructions, the smart cycling platform 50 calculates the resistance to be output according to the received instructions, and adjusts the resistance of the smart cycling platform 50 to meet the requirements of the virtual cycling software 60, so that the requirements of the virtual reality of the software are met, Figure 22 The reference figure in the use state of the utility model is shown.

[0101] In addition, the utility model can also be matched with the virtual cycling software 60 to do exercise in addition to the smart cycling platform 50. In addition to the same slope instruction used to control the resistance of the smart cycling platform 50, part of the smart cycling platform can simulate the angle between the bicycle and the ground plane at different slopes during real cycling, so that the rider can increase the real feeling in the virtual environment.

[0102] The slope instruction described above is also used to control the angle here, and the instruction can be transmitted to the smart cycling platform 50 or the smart cycling platform in a wired or wireless manner. The utility model is a cycling platform special training frame which can respond to the slope instruction of the virtual cycling software 60 and automatically adjust the angle with the ground plane according to the instruction.

[0103] When the rider connects the device to the virtual cycling software room (or game software) 60, the control unit 36 will establish an information docking channel with the virtual cycling software room (or game software) 60, and enter a standby state after the origin of the adjusting structure is returned.

[0104] With the technical means disclosed above, the utility model has the following effects:

[0105] The utility model combines the slope lifting adjusting device 30 with the main frame 10 used for training, without installing another independent climbing training device as in the prior art, so that the utility model has the effect of saving space.

[0106] More importantly, the slope lifting adjustment device 30 of the present application is arranged on the same axis (Y-Y) with the hollow sleeve 20, thus different from the prior art which is displaced on two axes (X-Y), the present application has a real situation feeling close to the actual riding of a bicycle on an uphill or downhill slope.

[0107] Thirdly, the slope lifting adjustment device 30 of the present application does not use the belt 226 of the prior art for transmission, but uses the adjusting screw 33, the nut 34 and the encoder 352 to adjust the lifting, thus without the slippage of the belt transmission, and with the functions of fast adjustment and accurate lifting position improved.

[0108] Obviously, the above-mentioned embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above-mentioned description. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A riding dolly frame with a slope automatic adjustment mechanism, characterized by, Including, a main frame with a seat and handlebars; a rear wheel set arranged at the rear of the main frame and detachable from the main frame; a drive system arranged on the main frame to drive the rear wheel set to rotate; characterized in that: the front end of the main frame extends downward to be provided with a hollow sleeve, and the two sides near the bottom end of the hollow sleeve are provided with symmetrical lock holes; a slope lifting adjustment device is sleeved on the axis of the hollow sleeve, which comprises: a shell base located at the bottom end of the slope lifting adjustment device, the bottom surface of which contacts the ground, and the upper end surface of which is provided with an opening; a telescopic sliding pipe, the bottom end of which is fixed on the opening of the shell base, and the two sides of which are provided with two symmetrical axial sliding grooves, and the upper end part of which extends into the hollow sleeve and can slide in the hollow sleeve; an adjusting screw arranged in the telescopic sliding pipe, the bottom end of which is positioned in the shell base; a nut sleeved on the adjusting screw, the two sides of which are provided with screw holes relative to the positions of the lock holes of the hollow sleeve; two fixing screws for fixing the nut inside the hollow sleeve through the lock holes and screw holes; a drive motor arranged in the shell base to drive the adjusting screw to rotate forward or reversely; an encoder arranged around the rotating shaft of the drive motor to sense the rotating state of the drive motor; a control unit arranged in the shell base, which is electrically connected with the drive motor and the encoder to control the drive motor to rotate forward or reversely, so that the adjusting screw rotates forward or reversely, and the nut moves upward or downward relative to the adjusting screw, thereby making the telescopic sliding pipe extend or retract relative to the hollow sleeve; thereby, the slope lifting adjustment device can extend or retract on the axis in the hollow sleeve, so that the main frame is lifted or lowered to simulate the situation of uphill or downhill of a bicycle.

2. The riding dolly frame with a slope automatic adjustment mechanism according to claim 1, characterized by, The bottom edge of the shell base forms a circular arc surface forward.

3. The riding dolly frame with a slope automatic adjustment mechanism according to claim 2, characterized by, The drive motor is arranged at the front side of the shell base, a speed reduction gear set is arranged between the bottom of the adjusting screw and the drive motor, and the drive motor drives the adjusting screw to rotate through the speed reduction gear set.

4. The riding dolly frame with a slope automatic adjustment mechanism according to claim 1, characterized by, including, a control instrument arranged on the main frame, which is electrically connected with the control unit.

5. The riding dolly frame with a slope automatic adjustment mechanism according to claim 1, characterized by, The slope lifting adjustment device further comprises a transmission unit and a storage unit electrically connected with the control unit, and a power supply circuit for providing the required power supply of the slope lifting adjustment device.

6. The riding dolly frame with a slope automatic adjustment mechanism according to claim 1, characterized by, The nut is provided with two symmetrical flange bodies on the two sides of the screw hole, and the two flange bodies can slide up and down in the two axial sliding grooves.

7. The riding dolly frame with a slope automatic adjustment mechanism according to claim 1, characterized by, The main frame further comprises a friction type riding platform.

8. The riding dolly frame with a slope automatic adjustment mechanism according to claim 1, characterized by, The main frame can be detached from the rear wheel set and combined with a direct drive type riding platform.

Images