Movable oil drum transportation equipment

Abstract

The embodiment of the utility model discloses movable oil drum transportation equipment. The movable oil drum transportation equipment comprises an equipment body, a traction piece and a locking piece. The traction piece comprises a first force arm, a second force arm, a rotating seat and a first rotating shaft, the first rotating shaft is fixed to the equipment body, and the rotating seat movably sleeves the first rotating shaft. The locking piece is provided with a locking position and an unlocking position, and the locking piece is connected with the rotating seat and the first rotating shaft under the locking position so as to fix the rotating seat relative to the first rotating shaft; at the unlocking position, the locking piece is unconnected with the rotating seat and / or the first rotating shaft, so that the rotating seat can rotate on the first rotating shaft. When the oil drum in the movable oil drum transportation equipment is unloaded, acting force can be applied to the second force arm of the traction piece according to the lever principle, so that the first force arm on the other side of the second force arm can rotate around the first rotating shaft to push the oil drum out of the movable oil drum transportation equipment; and compared with the prior art that the oil drum is manually carried for unloading, more time and labor are saved.

Description

Technical Field

[0001] The present application relates to the technical field of transportation equipment, and in particular to a movable oil barrel transportation equipment. Background Art

[0002] The oil barrels storing lubricating oil weigh up to 170 kg and need to be transported from the warehouse to the workshop corridor during use. In the related technology, forklifts are usually used for transportation. After the transportation is in place, 3 to 4 workers are required to unload it, which is time-consuming and labor-intensive, and it is easy to cause problems such as crushing injuries due to inadequate coordination. Utility Model Content

[0003] The embodiment of the present application provides a movable oil drum transport device, which is used to improve the problem in the related art that after the oil drum is transported to the destination, 3 to 4 workers are needed to unload it, which is time-consuming and labor-intensive, and is prone to problems such as people being crushed due to inadequate coordination.

[0004] The embodiment of the present application provides a movable oil drum transport device, including a device body, a traction member and a locking member. The traction member includes a first lever arm, a second lever arm, a rotating seat and a first rotating shaft. The first lever arm and the second lever arm are respectively fixed to opposite sides of the rotating seat, the first rotating shaft is fixed to the device body, and the rotating seat is movably sleeved on the first rotating shaft. The locking member has a locking position and a release position. In the locking position, the locking member connects the rotating seat and the first rotating shaft to fix the rotating seat relative to the first rotating shaft; in the release position, the locking member releases the connection with the rotating seat and / or the first rotating shaft to allow the rotating seat to rotate on the first rotating shaft.

[0005] In some embodiments, the locking member includes a moving rod, a second rotating shaft, a roller, a pull rod and an elastic member. The rotating seat has an inner cavity, the first rotating shaft is arranged in the inner cavity, the moving rod is located in the inner cavity, and the extension direction of the moving rod is perpendicular to the extension direction of the first rotating shaft. The second rotating shaft is located in the inner cavity and fixed to the moving rod, and the extension direction of the second rotating shaft is parallel to the extension direction of the first rotating shaft. The roller is movably sleeved on the second rotating shaft. One end of the pull rod is located in the inner cavity and fixed to the moving rod, and the other end of the pull rod is located outside the rotating seat. The elastic member is located in the inner cavity and sleeved on the pull rod, and the two ends of the elastic member respectively abut against the inner wall of the rotating seat and one end of the pull rod connected to the moving rod. Among them, in the locking position, the opposite sides of the roller respectively press against the inner wall of the rotating seat and the first rotating shaft, and the elastic member is in the restored state in the locking position; in the unlocking position, the roller is spaced apart from the rotating seat and / or the first rotating shaft, and the elastic member is in the compressed state in the unlocking position.

[0006] In some embodiments, the locking member includes two moving rods, two second rotating shafts and two rollers. The two moving rods are respectively located on opposite sides of the first rotating shaft, each second rotating shaft is respectively fixed to each moving rod, and each roller is respectively movably mounted on each second rotating shaft.

[0007] In some of the embodiments, a mounting hole is provided on the moving rod, the second rotating shaft is located in the mounting hole, and the roller extends out of the mounting hole.

[0008] In some embodiments, the locking member further includes a pull ring, which is located outside the rotating seat and connected to the pull rod.

[0009] In some embodiments, the locking member further includes a limiting rod, a limiting hole is provided on the pull rod, the limiting hole is located outside the rotating seat at the unlocking position, the limiting rod is inserted into the limiting hole and partially protrudes from the limiting hole.

[0010] In some of the embodiments, the first lever arm is located inside the device body, the second lever arm is located outside the device body, and the second lever arm is a telescopic arm.

[0011] In some embodiments, the first force arm is located inside the device body, the second force arm is located outside the device body, and the end of the second force arm away from the rotating seat includes a plurality of curved portions connected in sequence, and the bending directions of two adjacent curved portions are opposite.

[0012] In some embodiments, the first lever arm and the second lever arm extend along the same straight line direction.

[0013] In some embodiments, the movable oil drum transport equipment also includes a running wheel, which is connected to the equipment body. The running wheel has a first position and a second position. In the first position, at least part of the running wheel protrudes from the bottom of the equipment body, and in the second position, the running wheel does not protrude from the bottom of the equipment body.

[0014] The movable oil drum transport equipment of the embodiment of the present application is designed to include a traction member, so that when the oil drums in the movable oil drum transport equipment are unloaded, the lever principle can be utilized to apply a force to the second lever arm of the traction member so that the first lever arm on the other side of the second lever arm can rotate around the first rotating shaft to push the oil drum out of the movable oil drum transport equipment. Compared with the manual unloading of the oil drums in the related art, this method saves time and effort.

[0015] By designing the movable oil barrel transport equipment to include a locking member, it is convenient to control whether the first lever arm, the second lever arm and the rotating seat can rotate relative to the first rotating shaft. Specifically, if unloading is required, that is, the rotating seat needs to rotate relative to the first rotating shaft, the locking member can be placed in a released position; and if unloading is not required (e.g., during transportation), the locking member can be placed in a locked position to avoid accidentally touching the traction member, causing the traction member to push the oil barrel to move, affecting the normal transportation and other operations of the movable oil barrel transport equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the structure of a movable oil drum transport device provided in some embodiments of the present application;

[0018] Figure 2 yes Figure 1 A schematic diagram of a right side view of a movable oil drum transport device is shown;

[0019] Figure 3 yes Figure 1 An enlarged schematic diagram of a local structure in a movable oil drum transport device is shown;

[0020] Figure 4 yes Figure 3 An enlarged schematic diagram of the local structure in the released state is shown.

[0021] Description of reference numerals:

[0022] 1. Mobile oil drum transport equipment;

[0023] 10. Equipment body; 11. Accommodation chamber; 12. Opening; 13. Box door;

[0024] 20. traction member; 21. first lever arm; 22. second lever arm; 221. bending portion; 23. rotating seat; 231. inner cavity; 24. first rotating shaft;

[0025] 30. Locking member; 31. Moving rod; 311. Mounting hole; 32. Second rotating shaft; 33. Roller; 34. Pull rod; 341. Limiting hole; 35. Elastic member; 36. Pull ring; 37. Limiting rod;

[0026] 40. Traveling wheels. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0028] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0029] See also Figures 1 to 4 The embodiment of the present application provides a movable oil drum transport device 1, which includes a device body 10, a traction member 20 and a locking member 30. The traction member 20 includes a first lever arm 21, a second lever arm 22, a rotating seat 23 and a first rotating shaft 24. The first lever arm 21 and the second lever arm 22 are respectively fixed to opposite sides of the rotating seat 23, the first rotating shaft 24 is fixed to the device body 10, and the rotating seat 23 is movably sleeved on the first rotating shaft 24. The locking member 30 has a locking position and a releasing position. In the locking position, the locking member 30 connects the rotating seat 23 and the first rotating shaft 24 to fix the rotating seat 23 relative to the first rotating shaft 24; in the releasing position, the locking member 30 releases the connection with the rotating seat 23 and / or the first rotating shaft 24, so that the rotating seat 23 can rotate on the first rotating shaft 24.

[0030] The movable oil drum transport equipment 1 designed in the embodiment of the present application includes a traction member 20, so that when the oil drums in the movable oil drum transport equipment 1 are unloaded, the lever principle can be used to apply a force to the second lever arm 22 of the traction member 20, so that the first lever arm 21 on the other side of the second lever arm 22 can rotate around the first rotating shaft 24 to push the oil drum out of the movable oil drum transport equipment 1. Compared with the manual unloading of oil drums in the related art, it is more time-saving and labor-saving.

[0031] By designing the movable oil drum transport device 1 to include a locking member 30, it is convenient to control whether the first lever arm 21, the second lever arm 22 and the rotating seat 23 can rotate relative to the first rotating shaft 24. Specifically, if unloading is required, that is, the rotating seat 23 needs to rotate relative to the first rotating shaft 24, the locking member 30 can be placed in a released position; and if unloading is not required (e.g., during transportation), the locking member 30 can be placed in a locked position to avoid accidentally touching the traction member 20, causing the traction member 20 to push the oil drum to move, affecting the normal transportation and other operations of the movable oil drum transport device 1.

[0032] With respect to the equipment body 10, in an exemplary solution, the equipment body 10 is open at one end away from the traction member 20 to facilitate unloading of the oil drum. In another exemplary solution, the equipment body 10 may have a receiving cavity 11, the oil drum is located in the receiving cavity 11, the traction member 20 is located at one side of the equipment body 10, and the equipment body 10 may be provided with an opening 12 on the side away from the traction member 20. The equipment body 10 may be provided with a detachable / or rotatably connected box door 13 at the opening 12. When unloading, the opening 12 may be opened so that the oil drum can be unloaded from the receiving cavity 11 of the equipment body 10 through the opening 12.

[0033] For the above-mentioned traction member 20, its first lever arm 21 can be located inside the device body 10, so that the first lever arm 21 located inside the device body 10 can contact the oil drum inside the device body 10. The second lever arm 22 is located outside the device body 10, so that a force is manually applied to the second lever arm 22 to realize the first lever arm 21 rotating and pushing the oil drum.

[0034] Among them, the length of the second lever arm 22 can be greater than the length of the first lever arm 21, so as to save the force manually applied to the second lever arm 22 when pushing the oil drum. Among them, in order to achieve that the length of the second lever arm 22 is greater than the length of the first lever arm 21, the second lever arm 22 can be designed as a telescopic arm. The length of the telescopic arm can be flexibly adjusted to meet different usage requirements. For example, when the weight of the oil drum is large, the telescopic arm can be extended to a greater extent; and when the weight of the oil drum is relatively small, the telescopic arm can be not extended or extended to a lesser extent. And when there is no need to unload (such as during transportation), the telescopic arm can also be made at a shorter length to avoid causing transportation obstacles, etc. Of course, the second lever arm 22 may not be designed as a telescopic arm, but has a fixed length, and there is no limitation on this.

[0035] The first lever arm 21 can extend in a straight line direction or in an arc direction, and there is no limitation on this. The second lever arm 22 can extend in a straight line direction or in an arc direction, and there is no limitation on this. If the first lever arm 21 and the second lever arm 22 both extend in a straight line direction, the first lever arm 21 and the second lever arm 22 can extend in the same straight line direction, so that the force applied to the second lever arm 22 can be more efficiently transferred to the first lever arm 21, so as to facilitate the movement of the oil drum.

[0036] The end of the second arm 22 away from the rotating seat 23 includes a plurality of curved portions 221 connected in sequence, and the bending directions of two adjacent curved portions 221 are opposite. By designing the curved portions 221 with opposite bending directions at the end of the second arm 22 away from the rotating seat 23, it is convenient for the user to hold the corresponding part of the curved portion 221 to bend the second arm 22, thereby reducing the slipping problem in the process of bending the second arm 22. Of course, the end of the second arm 22 away from the rotating seat 23 can also be designed to include concave and convex patterns to avoid slipping.

[0037] The locking member 30 may include a moving rod 31, a second rotating shaft 32, a roller 33, a pull rod 34 and an elastic member 35. The rotating seat 23 has an inner cavity 231, the first rotating shaft 24 is disposed in the inner cavity 231, the moving rod 31 is located in the inner cavity 231, and the extending direction of the moving rod 31 is perpendicular to the extending direction of the first rotating shaft 24. The second rotating shaft 32 is located in the inner cavity 231 and fixed to the moving rod 31, and the extending direction of the second rotating shaft 32 is parallel to the extending direction of the first rotating shaft 24. The roller 33 is movably sleeved on the second rotating shaft 32. One end of the pull rod 34 is located in the inner cavity 231 and fixed to the moving rod 31, and the other end of the pull rod 34 is located outside the rotating seat 23. The elastic member 35 is located in the inner cavity 231 and sleeved on the pull rod 34, and the two ends of the elastic member 35 respectively abut against the inner wall of the rotating seat 23 and one end of the pull rod 34 connected to the moving rod 31. In the locked position, the two opposite sides of the roller 33 respectively press against the inner wall of the rotating seat 23 and the first rotating shaft 24, and the elastic member 35 is in the restored state in the locked state; in the unlocked position, the roller 33 is spaced from the rotating seat 23 and / or the first rotating shaft 24, and the elastic member 35 is in the compressed state in the unlocked state. In the locked position, the two opposite sides of the roller 33 respectively press against the inner wall of the rotating seat 23 and the first rotating shaft 24, so that the roller 33 can apply a certain friction force to the inner wall of the rotating seat 23 and the first rotating shaft 24, so that under the obstruction of the friction force, the rotating seat 23 is not easy to rotate relative to the first rotating shaft 24, and the two can be roughly kept in a relatively fixed state.

[0038] It should be noted that the friction force applied by the roller 33 to the inner wall of the rotating seat 23 and the first rotating shaft 24 can be adjusted by designing the gap between the inner wall of the rotating seat 23 and the first rotating shaft 24 and the radial size of the roller 33. Specifically, the greater the friction force applied by the roller 33 to the inner wall of the rotating seat 23 and the first rotating shaft 24, the less likely the rotating seat 23 is to rotate relative to the first rotating shaft 24; the smaller the friction force applied by the roller 33 to the inner wall of the rotating seat 23 and the first rotating shaft 24, the easier the rotating seat 23 is to rotate relative to the first rotating shaft 24.

[0039] In the embodiment of the present application, the distance between the inner wall of the rotating seat 23 and the first rotating shaft 24 can be designed to be slightly smaller than the radial dimension of the roller 33, so that when the roller 33 is located between the inner wall of the rotating seat 23 and the first rotating shaft 24 and presses against the inner wall of the rotating seat 23 and the first rotating shaft 24, the force applied by the roller 33 to the inner wall of the rotating seat 23 and the first rotating shaft 24 is sufficient, and it is convenient for the roller 33 to enter between the inner wall of the rotating seat 23 and the first rotating shaft 24.

[0040] It should be noted that, in the above-mentioned design, the elastic member 35 is in the restored state in the locked state, and in the compressed state in the released state. Therefore, when the locking member 30 is switched from the locked state to the released state, it is necessary to manually apply a force to pull the pull rod 34 to overcome the elastic force of the elastic member 35 and put it in the compressed state; and when the locking member 30 is switched from the released state to the locked state, it is only necessary to release the pull rod 34, and the pull rod 34, the moving rod 31 and the roller 33 can move under the elastic restoring force of the elastic member 35, so that the locking member 30 can be switched from the released state to the locked state without applying additional force.

[0041] The above-mentioned roller 33 is movably mounted on the second rotating shaft 32, so that when the roller 33 enters between the inner wall of the rotating seat 23 and the first rotating shaft 24, it can rotate relative to the second rotating shaft 32. Compared with the roller 33 remaining in a fixed state and entering between the inner wall of the rotating seat 23 and the first rotating shaft 24, it is easier for the roller 33 to enter between the inner wall of the rotating seat 23 and the first rotating shaft 24. Of course, the second rotating shaft 32 can also be omitted, and the roller 33 can be directly fixed on the moving rod 31, which is not limited to this.

[0042] The locking member 30 includes two moving rods 31, two second rotating shafts 32 and two rollers 33. The two moving rods 31 are respectively located on opposite sides of the first rotating shaft 24. Each second rotating shaft 32 is respectively fixed to each moving rod 31, and each roller 33 is respectively movably sleeved on each second rotating shaft 32. In this way, the forces applied by the two rollers 33 to the rotating seat 23 and the first rotating shaft 24 can be more balanced, and the contact area between the rollers 33 and the rotating seat 23 and the first rotating shaft 24 can be increased, and the friction force applied by the rollers 33 to the inner wall of the rotating seat 23 and the first rotating shaft 24 in the locked position can be increased.

[0043] The moving rod 31 is provided with a mounting hole 311, the second rotating shaft 32 is located in the mounting hole 311, and the roller 33 extends out of the mounting hole 311. The second rotating shaft 32 and the roller 33 are partially arranged in the mounting hole 311, which is beneficial to reducing the size of the locking member 30 on the one hand, and can prevent the moving rod 31 from hindering the contact between the roller 33 and the inner wall of the rotating seat 23 and the first rotating shaft 24 on the other hand.

[0044] The locking member 30 further includes a pull ring 36, which is located outside the rotating seat 23 and connected to the pull rod 34. The setting of the pull ring 36 facilitates the user to apply force to pull the pull rod 34, so that the locking member 30 can be switched from the locked state to the unlocked state.

[0045] The locking member 30 also includes a limiting rod 37, a limiting hole 341 is provided on the pull rod 34, the limiting hole 341 is located outside the rotating seat 23 at the unlocking position, and the limiting rod 37 is inserted into the limiting hole 341 and partially protrudes from the limiting hole 341. In this way, the locking member 30 can be kept in the unlocking state by the limiting rod 37, so that the user can concentrate on bending the second force arm 22 to push the oil drum. It should be noted that if the limiting rod 37 is pulled out of the limiting hole 341, the pull rod 34, the moving rod 31 and the roller 33 can move under the elastic restoring force of the elastic member 35, so that the locking member 30 can be switched from the unlocking state to the locking state.

[0046] The movable oil barrel transport equipment 1 also includes a running wheel 40, which is connected to the equipment body 10. The running wheel 40 has a first position and a second position. In the first position, at least part of the running wheel 40 protrudes from the bottom of the equipment body 10, and in the second position, the running wheel 40 does not protrude from the bottom of the equipment body 10. By designing the running wheel 40 to have a first position and a second position, it is convenient to place the running wheel 40 in the second position during unloading, thereby reducing the height difference between the equipment body 10 and the ground, which is conducive to the oil barrel falling directly to the ground and not being easily damaged; and during transportation, the running wheel 40 is placed in the first position, so that there is a height difference between the equipment body 10 and the ground, and the movement of the running wheel 40 can drive the equipment body 10 to move, so as to achieve the effect of moving the oil barrel. Among them, the running wheel 40 can be a universal wheel to enhance the movement flexibility of the equipment body 10, which is not limited.

[0047] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to at least two, for example, two, three, four, etc. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0048] The above disclosure is only the preferred embodiment of the present application, which certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A movable oil drum transport device (1), characterized in that: include: Device body (10); A traction member (20), the traction member (20) comprising a first force arm (21), a second force arm (22), a rotating seat (23) and a first rotating shaft (24), the first force arm (21) and the second force arm (22) being respectively fixed to opposite sides of the rotating seat (23), the first rotating shaft (24) being fixed to the device body (10), and the rotating seat (23) being movably sleeved on the first rotating shaft (24); A locking member (30), wherein the locking member (30) has a locking position and a releasing position. In the locking position, the locking member (30) is connected to the rotating seat (23) and the first rotating shaft (24) to fix the rotating seat (23) relative to the first rotating shaft (24); in the releasing position, the locking member (30) is released from the connection with the rotating seat (23) and / or the first rotating shaft (24) to enable the rotating seat (23) to rotate on the first rotating shaft (24).

2. The movable oil drum transport equipment (1) according to claim 1 is characterized in that: The locking member (30) comprises: A moving rod (31), the rotating seat (23) having an inner cavity (231), the first rotating shaft (24) passing through the inner cavity (231), the moving rod (31) being located in the inner cavity (231), and the extending direction of the moving rod (31) being perpendicular to the extending direction of the first rotating shaft (24); a second rotating shaft (32), the second rotating shaft (32) being located in the inner cavity (231) and fixed to the moving rod (31), and an extending direction of the second rotating shaft (32) being parallel to an extending direction of the first rotating shaft (24); A roller (33), wherein the roller (33) is movably mounted on the second rotating shaft (32); A pull rod (34), one end of which is located in the inner cavity (231) and fixed to the moving rod (31), and the other end of which is located outside the rotating seat (23); An elastic member (35), the elastic member (35) is located in the inner cavity (231) and is sleeved on the pull rod (34), and two ends of the elastic member (35) respectively abut against the inner wall of the rotating seat (23) and one end of the pull rod (34) connected to the moving rod (31); Wherein, in the locked position, the two opposite sides of the roller (33) respectively press against the inner wall of the rotating seat (23) and the first rotating shaft (24), and the elastic member (35) is in a restored state in the locked position; in the unlocked position, the roller (33) is spaced from the rotating seat (23) and / or the first rotating shaft (24), and the elastic member (35) is in a compressed state in the unlocked position.

3. The movable oil drum transport equipment (1) according to claim 2 is characterized in that: The locking member (30) comprises two moving rods (31), two second rotating shafts (32) and two rollers (33). The two moving rods (31) are respectively located on two opposite sides of the first rotating shaft (24). Each of the second rotating shafts (32) is respectively fixed to each of the moving rods (31). Each of the rollers (33) is respectively movably sleeved on each of the second rotating shafts (32).

4. The movable oil drum transport equipment (1) according to claim 2 is characterized in that: The moving rod (31) is provided with a mounting hole (311), the second rotating shaft (32) is located in the mounting hole (311), and the roller (33) extends out of the mounting hole (311).

5. The movable oil drum transport equipment (1) according to claim 2, characterized in that: The locking member (30) further comprises: A pull ring (36), the pull ring (36) is located outside the rotating seat (23), and the pull ring (36) is connected to the pull rod (34).

6. The movable oil drum transport equipment (1) according to claim 2, characterized in that: The locking member (30) further comprises: A limiting rod (37), a limiting hole (341) is arranged on the pull rod (34), the limiting hole (341) is located outside the rotating seat (23) in the unlocking position, and the limiting rod (37) is inserted into the limiting hole (341) and partially protrudes from the limiting hole (341).

7. The movable oil drum transport equipment (1) according to claim 1, characterized in that: The first force arm (21) is located inside the device body (10), and the second force arm (22) is located outside the device body (10), and the second force arm (22) is a telescopic arm.

8. The movable oil drum transport equipment (1) according to claim 1, characterized in that: The first force arm (21) is located inside the device body (10), and the second force arm (22) is located outside the device body (10); one end of the second force arm (22) away from the rotating seat (23) includes a plurality of curved portions (221) connected in sequence, and the bending directions of two adjacent curved portions (221) are opposite.

9. The movable oil drum transport equipment (1) according to claim 1, characterized in that: The first force arm (21) and the second force arm (22) extend along the same straight line direction.

10. The movable oil drum transport equipment (1) according to claim 1, characterized in that: Also includes: A running wheel (40), the running wheel (40) being connected to the device body (10), the running wheel (40) having a first position and a second position, wherein at least a portion of the running wheel (40) protrudes from the bottom of the device body (10) in the first position, and the running wheel (40) does not protrude from the bottom of the device body (10) in the second position.

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