Hollow lifting column

Abstract

A hollow lifting column comprises a bottom adjusting base, an upper side adjusting cylinder, a sliding ring, a harmonic reducer, an external thread adjusting cylinder, an internal thread adjusting cylinder, a bottom hole and a bearing fixing cylinder, the bottom hole is formed in the middle of the bottom adjusting base, the bearing fixing cylinder is arranged in the middle of the bottom adjusting base, the lower side of the bearing fixing cylinder penetrates through the sliding ring, and the middle of the bearing fixing cylinder penetrates through the harmonic reducer. The outer diameter of the bearing fixing cylinder is matched with the inner diameter of the non-standard bearing, the upper side of the bearing fixing cylinder penetrates through the non-standard bearing and is connected with the bearing fixing cylinder, the lower side of the sliding ring is connected with the bottom adjusting base, the upper side of the sliding ring is connected with the harmonic reducer, the harmonic reducer rotates along with the sliding ring, and the upper side of the harmonic reducer is connected with the lower side of the external thread adjusting cylinder. The external thread adjusting cylinder rotates along with the harmonic reducer.

Description

Technical Field

[0001] The utility model relates to the field of lifting columns, in particular to a hollow lifting column. Background Art

[0002] The lifting column is connected with electrical equipment for lifting and position control. However, the existing lifting column has unsatisfactory structural stability, and its push rod is prone to relative rotation with the base, resulting in a change in the direction of the push rod, which has drawbacks and needs to be improved. Content of the Utility Model

[0003] In view of the above deficiencies of the prior art, the utility model provides a hollow lifting column which realizes linear lifting motion through the transmission and cooperation among components, avoids the relative rotation of the push rod with the base, can play a role in work with directional requirements, and utilizes the advantage of the high transmission ratio of the harmonic reducer to achieve an output effect of several revolutions per minute, providing advantages in slow-speed occasions. By using the hollow part in the middle, the lines of electrical equipment or hydraulic pipelines can be hidden, increasing the protection of circuits and air circuits.

[0004] The purpose of the utility model is realized through the following technical solutions:

[0005] A hollow lifting column includes a bottom adjusting seat, an upper adjusting cylinder, a slip ring, a harmonic reducer, an external thread adjusting cylinder, an internal thread adjusting cylinder, a bottom hole, and a bearing fixing cylinder. A bottom hole is opened in the middle of the bottom adjusting seat, and a bearing fixing cylinder is arranged in the middle of the bottom adjusting seat. The lower side of the bearing fixing cylinder passes through the slip ring, and the middle of the bearing fixing cylinder passes through the harmonic reducer. The outer diameter of the bearing fixing cylinder is adapted to the inner diameter of the non-standard bearing. The upper side of the bearing fixing cylinder passes through the non-standard bearing, and the non-standard bearing is connected to the bearing fixing cylinder. The lower side of the slip ring is connected to the bottom adjusting seat, and the upper side of the slip ring is connected to the harmonic reducer. The harmonic reducer rotates with the slip ring. The upper side of the harmonic reducer is connected to the lower side of the external thread adjusting cylinder, and the external thread adjusting cylinder rotates with the harmonic reducer.

[0006] In the utility model, the outer diameter of the non-standard bearing is adapted to the inner diameter of the external thread adjusting cylinder. The non-standard bearing passes through the external thread adjusting cylinder and rotates with the external thread adjusting cylinder. The outer diameter of the external thread adjusting cylinder is adapted to the inner diameter of the internal thread adjusting cylinder. The external thread adjusting cylinder is connected to the internal thread adjusting cylinder, and the external thread adjusting cylinder and the internal thread adjusting cylinder are connected by a thread pair, and an Archimedean spiral motion is performed between the external thread adjusting cylinder and the internal thread adjusting cylinder.

[0007] The upper end of the non-standard bearing in the utility model is connected to the upper adjusting cylinder. The upper adjusting cylinder moves with the non-standard bearing. The inner wall of the upper adjusting cylinder is in contact with the inner wall of the bottom adjusting seat, and the upper adjusting cylinder slides on the bottom adjusting seat.

[0008] The utility model discloses an upper side adjusting tube with a top hole in the middle of the upper side, an upper side protective tube is provided in the middle of the inner side of the upper side adjusting tube, the outer diameter of the upper side protective tube is adapted to the inner diameter of the bearing fixing tube, the upper side protective tube passes through the bearing fixing tube, and slides in the bearing fixing tube. Beneficial effects

[0009] The utility model starts the slip ring, the slip ring rotates, the harmonic reducer rotates with the slip ring, and the external thread adjusting cylinder rotates with the harmonic reducer. Since the bottom adjusting seat and the upper adjusting cylinder are square, and the internal thread adjusting cylinder and the upper adjusting cylinder are fixedly connected, the internal thread adjusting cylinder will not rotate with the external thread adjusting cylinder. Therefore, under the action of the thread pair, the internal thread adjusting cylinder converts the rotation of the external thread adjusting cylinder into linear motion, thereby solving the problem that the ordinary lifting rod and the push rod will rotate relative to the base, and can play a role in work with directional requirements.

[0010] The utility model fixes the steel wheel of the harmonic reducer directly to the slip ring housing, which provides advantages in situations where slow speed is required. By taking advantage of the hollowness of the device, when electrical equipment or hydraulic and pneumatic equipment needs to be connected to the upper side, the electrical circuit or hydraulic pipeline is hidden in the middle, thereby achieving the effect of protecting the circuit and gas circuit in harsh environments.

[0011] The utility model realizes linear lifting motion through transmission cooperation between various components, avoids the push rod from rotating relative to the base, and can play a role in work with directional requirements. At the same time, it takes advantage of the high transmission ratio of the harmonic reducer to achieve an output effect of several revolutions per minute, which provides advantages in situations where slow speed is required. The hollow part in the middle can be used to hide the lines of electrical equipment or hydraulic pipelines, thereby increasing the protection of circuits and gas circuits. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the hollow lifting column described in the utility model.

[0013] Figure 2 This is a cross-sectional view of the hollow lifting column structure described in the utility model.

[0014] Figure 3 This is a schematic structural diagram of the upper regulating cylinder described in the present utility model. DETAILED DESCRIPTION

[0015] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments:

[0016] Example 1:

[0017] A hollow lifting column, including a bottom adjustment seat 01, an upper adjustment cylinder 02, a slip ring 03, a harmonic reducer 04, an external thread adjustment cylinder 05, an internal thread adjustment cylinder 06, a bottom hole 07, and a bearing fixing cylinder 08. The bottom adjustment seat 01 has a bottom hole 07 in the middle, and a bearing fixing cylinder 08 is provided in the middle of the bottom adjustment seat 01. The lower side of the bearing fixing cylinder 08 passes through the slip ring 03, and the middle of the bearing fixing cylinder 08 passes through the harmonic reducer 04. The outer diameter of the bearing fixing cylinder 08 is adapted to the inner diameter of the non-standard bearing 09. The upper side of the bearing fixing cylinder 08 passes through the non-standard bearing 09, and the non-standard bearing 09 is connected to the bearing fixing cylinder 08. The lower side of the slip ring 03 is connected to the bottom adjustment seat 01, and the upper side of the slip ring 03 is connected to the harmonic reducer 04. The harmonic reducer 04 rotates with the slip ring 03. The upper side of the harmonic reducer 04 is connected to the lower side of the external thread adjustment cylinder 05. The external thread adjustment cylinder 05 rotates with the harmonic reducer 04. The steel wheel of the harmonic reducer 04 is directly fixed to the outer shell of the slip ring 03. The harmonic generator of the harmonic reducer 04 is connected to the hollow shaft of the slip ring 03. The flexible wheel of the harmonic reducer 04 is used to output to the external thread adjustment cylinder 05. The high transmission ratio of the harmonic reducer 04 is utilized to achieve an output effect of several revolutions per minute, which provides advantages in situations where slow speed is required. The hollow advantage of the device is utilized to hide the electrical circuit or hydraulic and pneumatic equipment in the middle when the upper side needs to be connected to electrical equipment or hydraulic and pneumatic equipment, so as to protect the circuit and gas circuit in harsh environments.

[0018] Example 2:

[0019] The outer diameter of the non-standard bearing 09 described in the utility model is adapted to the inner diameter of the externally threaded adjusting cylinder 05, the non-standard bearing 09 passes through the externally threaded adjusting cylinder 05, the non-standard bearing 09 rotates with the externally threaded adjusting cylinder 05, the outer diameter of the externally threaded adjusting cylinder 05 is adapted to the inner diameter of the internally threaded adjusting cylinder 06, the externally threaded adjusting cylinder 05 is connected to the internally threaded adjusting cylinder 06, the externally threaded adjusting cylinder 05 and the internally threaded adjusting cylinder 06 are connected through a threaded pair, and Archimedean spiral motion is performed between the externally threaded adjusting cylinder 05 and the internally threaded adjusting cylinder 06.

[0020] Example 3:

[0021] For the non-standard bearing 09 of the present utility model, the upper end is connected to the upper adjusting cylinder 02. The upper adjusting cylinder 02 moves along with the non-standard bearing 09. The inner wall of the upper adjusting cylinder 02 is in contact with the inner wall of the bottom adjusting seat 01, and the upper adjusting cylinder 02 slides on the bottom adjusting seat 01. By starting the slip ring 03, the slip ring 03 rotates, the harmonic reducer 04 rotates along with the slip ring 03, and the external thread adjusting cylinder 05 rotates along with the harmonic reducer 04. Since the bottom adjusting seat 01 and the upper adjusting cylinder 02 are square, and the internal thread adjusting cylinder 06 is fixedly connected to the upper adjusting cylinder 02, the internal thread adjusting cylinder 06 will not rotate along with the external thread adjusting cylinder 05. Thus, under the action of the screw pair, the internal thread adjusting cylinder 06 converts the rotation of the external thread adjusting cylinder 05 into a linear motion, thereby solving the problem that the push rod of a common lifting rod will rotate relative to the base, and it can play a role in work with directional requirements.

[0022] Embodiment 4:

[0023] In the upper side middle part of the upper adjusting cylinder 02 of the present utility model, a top hole 10 is opened. In the middle part of the inner side of the upper adjusting cylinder 02, an upper side protection cylinder 11 is provided. The outer diameter of the upper side protection cylinder 11 is adapted to the inner diameter of the bearing fixing cylinder 08. The upper side protection cylinder 11 passes through the bearing fixing cylinder 08 and slides in the bearing fixing cylinder 08. This device realizes linear lifting motion through the transmission and cooperation among various components, avoids the relative rotation of the push rod and the base, can play a role in work with directional requirements, and utilizes the advantage of the high transmission ratio of the harmonic reducer 04 to achieve an output effect of several revolutions per minute, providing an advantage in occasions where a slow speed is required. By using the hollow part in the middle, the circuits of electrical equipment or hydraulic pipelines, etc. can be hidden, increasing the protection for circuits and air circuits.

[0024] Embodiment 5:

[0025] Installation steps: First, install the harmonic reducer 04 on the upper side of the slip ring 03, and the harmonic reducer 04 rotates with the slip ring 03. Then, install the external thread adjusting cylinder 05 on the upper side of the harmonic reducer 04, and the external thread adjusting cylinder 05 rotates with the harmonic reducer 04. Next, pass the non-standard bearing 09 through the external thread adjusting cylinder 05, and the non-standard bearing 09 rotates with the external thread adjusting cylinder 05. Then, connect the external thread adjusting cylinder 05 to the internal thread adjusting cylinder 06 externally. The external thread adjusting cylinder 05 and the internal thread adjusting cylinder 06 are connected by a thread pair, and an Archimedean spiral motion is performed between the external thread adjusting cylinder 05 and the internal thread adjusting cylinder 06. Then, place the slip ring 03, the harmonic reducer 04, the external thread adjusting cylinder 05, the internal thread adjusting cylinder 06, and the non-standard bearing 09 into the bottom adjusting seat 01, and fixedly connect the lower side of the slip ring 03 to the lower side of the bottom adjusting seat 01. The bearing fixing cylinder 08 passes through the slip ring 03, the harmonic reducer 04, and the non-standard bearing 09 in sequence, and is fixedly connected between the non-standard bearing 09 and the bearing fixing cylinder 08. Finally, make the inner wall of the upper adjusting cylinder 02 contact the inner wall of the bottom adjusting seat 01. The upper adjusting cylinder 02 slides on the bottom adjusting seat 01, and is fixedly connected between the upper end of the non-standard bearing 09 and the internal thread adjusting cylinder 06. The upper adjusting cylinder 02 moves with the non-standard bearing 09. The upper protection cylinder 11 passes through the bearing fixing cylinder 08, and the upper protection cylinder 11 slides in the bearing fixing cylinder 08, completing the installation.

Claims

1. A hollow lifting column, characterized in that : It includes a bottom adjusting seat (01), an upper adjusting cylinder (02), a slip ring (03), a harmonic reducer (04), an external thread adjusting cylinder (05), an internal thread adjusting cylinder (06), a bottom hole (07), and a bearing fixing cylinder (08). A bottom hole (07) is opened in the middle of the bottom adjusting seat (01). A bearing fixing cylinder (08) is provided in the middle of the bottom adjusting seat (01). The lower side of the bearing fixing cylinder (08) passes through the slip ring (03). The middle of the bearing fixing cylinder (08) passes through the harmonic reducer (04). The outer diameter of the bearing fixing cylinder (08) is adapted to the inner diameter of the non-standard bearing (09). The upper side of the bearing fixing cylinder (08) passes through the non-standard bearing (09). The non-standard bearing (09) is connected to the bearing fixing cylinder (08). The lower side of the slip ring (03) is connected to the bottom adjusting seat (01). The upper side of the slip ring (03) is connected to the harmonic reducer (04). The harmonic reducer (04) rotates with the slip ring (03). The upper side of the harmonic reducer (04) is connected to the lower side of the external thread adjusting cylinder (05). The external thread adjusting cylinder (05) rotates with the harmonic reducer (04).

2. The hollow lifting column according to claim 1, characterized in that : The outer diameter of the non-standard bearing (09) is adapted to the inner diameter of the external thread adjusting cylinder (05). The non-standard bearing (09) passes through the external thread adjusting cylinder (05). The non-standard bearing (09) rotates with the external thread adjusting cylinder (05). The outer diameter of the external thread adjusting cylinder (05) is adapted to the inner diameter of the internal thread adjusting cylinder (06). The external thread adjusting cylinder (05) is connected to the internal thread adjusting cylinder (06). The external thread adjusting cylinder (05) and the internal thread adjusting cylinder (06) are connected by a thread pair.

3. The hollow lifting column according to claim 2, characterized in that : The upper end of the non-standard bearing (09) is connected to the upper adjusting cylinder (02). The upper adjusting cylinder (02) moves with the non-standard bearing (09). The inner wall of the upper adjusting cylinder (02) is in contact with the inner wall of the bottom adjusting seat (01). The upper adjusting cylinder (02) slides on the bottom adjusting seat (01).

4. The hollow lifting column according to claim 3, characterized in that : A top hole (10) is opened in the middle of the upper side of the upper adjusting cylinder (02). An upper protection cylinder (11) is provided in the middle of the inner side of the upper adjusting cylinder (02). The outer diameter of the upper protection cylinder (11) is adapted to the inner diameter of the bearing fixing cylinder (08). The upper protection cylinder (11) passes through the bearing fixing cylinder (08). The upper protection cylinder (11) slides in the bearing fixing cylinder (08).

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